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                          DISPLAY DRIVERS MANUAL


                   CIRRUS LOGIC (ISA & VL-BUS) VGA CARD








                                 CL-542XI
                                 CL-542XVL
























        User Guide
        Product: GDS542X-X-D132P
        Software revision: 1.32
        Document release date: July 9, 1993
        Document revision: 1.32






                              Table of Contents
                              -----------------

        Easy Installation                                    Page 1


        Utility software
           Clmode                                            Page 3
           SetRES                                            Page 7


        Display drivers
           Microsoft Windows                                 Page 9
           Autodesk - ADI 4.2                                Page 12
           GEM/3                                             Page 38
           Lotus 123 v2.X, Symphony, and Report Writer       Page 40
           Lotus 123 v3.X                                    Page 40
           OS/2 2.0 (Optional)                               Page 42
           Ventura Publisher                                 Page 48
           Microsoft Word                                    Page 49
           WordPerfect 5.1                                   Page 50
           WordStar                                          Page 52


                                                              Page 1

        Easy installation
        -----------------
        The  installation  utility  is provided  to  facilitate  the
        smooth  installation  of  the display  drivers  and  utility 
        software. The installation program is menu-driven and allows 
        you  to  select and install only those display  drivers  for 
        software and applications currently in use.

        It  is important to note that some display drivers  need  to
        have  the  associated vendor's application  program  already 
        installed  on the system prior to loading the  Cirrus  Logic 
        VGA  display  drivers. In other cases, the  loading  of  the 
        display  driver  may  be an integral part  of  the  vendor's 
        product  installation  process.  Please  review  the  driver 
        product  section  below for specific instructions  prior  to 
        running the installation program.

        The installation utility is located on the diskette  labeled
        Disk  1. To install the desired display drivers  and  utili-
        ties, insert the diskette into the A: drive, type 

                        A:[Enter]
                        INSTALL[Enter]

        Follow the instructions on the screen to install the  listed
        display  drivers. At any time you may press [Esc]  to  abort 
        the installation process and go back to DOS.

        Selected drivers are simply copied to the specified disk and
        directory. Applications may require additional  installation 
        as described in the Display drivers section of this manual.




        Software Upgrades
        -----------------
        Cirrus  Logic  releases new drivers and  utilities  about  3 
        times  a year. You can get the latest releases  of  software 
        two way. The first way is to call the Cirrus Logic BBS  (see 
        below). The second way is to call the Cirrus Logic  Software 
        Upgrade Service. The phone number for upgrades is 1-800-764-
        7200. The upgrade service is provided by an outside contrac-
        tor, so they cannot provide any technical support or  answer 
        any questions. When calling them, you should tell them  that 
        you need the GD542X upgrade kit and that your current  soft-
        ware  is version 1.32. The upgrade kit includes  the  latest 
        version  of  all software and a new user guide. There  is  a 
        twenty-five  dollar  charge  for the kit.  This  covers  the 
        telephone call as well as the production costs for the kit.




                                                              Page 2

        Cirrus Logic BBS
        ----------------
        If  there  are any newer versions of the  software  provided
        with your VGA adapter, they will be available on the  Cirrus 
        Logic  BBS. It is a WILDCAT! BBS. The phone number is  (510) 
        226-2365. It can handle modems running up to 9600 baud.  The 
        modem  should be set to NO parity, 8 data bits, 1 stop  bit. 
        Before you are able to download software, you must join  the 
        conference(s) for the product(s) that you are interested in.


                                                              Page 3
        Utility Software
        ----------------
        Several utility programs are supplied with you Cirrus  Logic 
        VGA. The following section describes these utilities and how 
        to use them.

        Clmode  is a program supplied with your Cirrus Logic VGA  to
        configure it's various options. 

        SetRES lets the user change the operating resolution and the
        number of colors from within Windows.


        Clmode
        ------
        The  Clmode  utility allows the user to define the  type  of 
        monitor  attached and set the video modes supported  by  the 
        Cirrus Logic VGA.


        Using Clmode's menu-driven interface
        ------------------------------------
        At the DOS prompt type:

                        CLMODE[Enter]

        The main popup window consists of a number of buttons.  Each
        button represents a different option or menu. The underlined 
        letter  of a button name specifies the hot  key  combination 
        for  that item. For example, press the [Alt] and the  under-
        lined  letter  keys simultaneously or  just  the  underlined 
        letter key to select an option. Note if you intend to use  a 
        mouse  with  Clmode,  then a mouse driver  should  first  be 
        installed prior to running the Clmode utility.


        Choosing the attached monitor type
        ----------------------------------
        Selecting  the  proper monitor type will  allow  the  Cirrus 
        Logic  VGA to display the highest quality output that it  is 
        capable  of  with  the attached monitor.  The  monitor  type 
        determines  what video modes will be available to your  sys-
        tem.  It  will  also determine the  vertical  refresh  rates 
        available. Generally, the higher the refresh, the better the 
        screen  will  look. A description of the  available  monitor 
        types is given in table 2 at the end of this section.

        Select  the  Monitor  Type button. The  Monitor  Type  setup
        window  will be displayed. The current monitor type will  be 
        highlighted  initially. Use the cursor keys or the mouse  to 
        choose the type of monitor attached. Selecting the  Advanced 
        monitor  type will enable you to customize the monitor  tim-
        ings for the monitor you are using.


                                                              Page 4

        To  customize the monitor timings, use the mouse or the  tab
        key to select the gray Set Advanced button. It will only  be 
        available  if  the Advanced monitor type is  selected.  This 
        will bring up a new dialog box with drop down menus for each 
        available  resolution. Select the desired refresh  rate  for 
        each  resolution.  Consult the manual for  your  monitor  to 
        discover  the  correct rate. When all of  the  settings  are 
        correct, select the OK button. If there are any problems  or 
        you change your mind, select the Cancel button. 

        Before  saving the new monitor type, you may want to  select
        the Verify button to view each of the new video timings that 
        you  have selected to verify that they are  compatible  with 
        your  monitor.  After each test screen is  displayed,  press 
        [Enter] or the left mouse button to see the next video mode. 
        If there is a problem, press [Esc] or the right mouse button 
        will return you to the Monitor Type Setup dialog box. Try  a 
        slower setting for the resolution that did not work and  try 
        verifying your choices again.

        Once you are sure that everything is correct, press the Save
        button to set the new monitor type. Press the Cancel  button 
        to  discard  any  changes. Press the Help button  to  get  a 
        detailed  explanation on the monitor types and the  VGA  re-
        fresh rates.

        On some systems the monitor type will be remembered from one
        session to the next. To test this, select a monitor type and 
        exit  the  Clmode  program. Turn the computer  off  for  ten 
        seconds. After rebooting the computer, run Clmode and verify 
        whether  or not the monitor that you selected is still  ena-
        bled.  If it is, it should not ever need to be set again  in 
        normal use. If the monitor type was not kept then you should 
        select  the option to have Clmode save the monitor  type  in 
        you  AUTOEXEC.BAT file. You will be given this choice  after 
        selecting the Save button.


        Available video modes
        ---------------------
        Select the Video Mode button. The Video Mode Preview  window 
        displays  all the modes supported according to  the  monitor 
        type  attached and the amount of video memory present.  This 
        list  of  video modes will tell you which are  available  in 
        your current configuration for use with extended  resolution 
        drivers. To see what different video modes look like on your 
        monitor,  select the Preview button. After each test  screen 
        is displayed, press [Enter] or the left mouse button to  see 
        the next video mode. If you don't want to see any more video 
        modes press [Esc] or the right mouse button will return  you 
        to the Video Modes Preview window.



                                                              Page 5

        Retrieving the current VGA controller status
        --------------------------------------------
        The information in the main window displays the VGA control-
        ler  type, the BIOS version number and the amount  of  video 
        memory present.


        Getting Help
        ------------
        Clmode provides Help for the following items: Monitor  Type, 
        Video  Mode Preview, Mouse, Keyboard and About  Clmode.  The 
        Monitor Type help window explains the different capabilities 
        of each monitor type. The Video Mode help window defines the 
        information given in the Video Mode window. The Keyboard and 
        Mouse  help windows explain how to use the keyboard and  the 
        mouse  to  make selections. The About  window  displays  the 
        Cirrus  Logic copyright message and the Clmode version  num-
        ber.


        Exiting the Clmode
        ------------------
        To exit Clmode at any time, press [Alt] and [F4] keys simul-
        taneously,  or  click the left mouse button  on  the  system 
        button  of the main window (i.e. The top left corner  button 
        of  the window which is shown as a dot), or select the  Exit 
        button.  When  the Clmode utility exits, the  current  video 
        mode, monitor type, and VGA refresh rate will be displayed.


        Using Clmode's command line options
        -----------------------------------
        When  command line options for CLMODE.EXE are given  at  the
        DOS  prompt, the menu-driven windows will not be  displayed. 
        Instead,  monitor type, video mode and refresh rate will  be 
        set  at  the  DOS  prompt.  The  command  line  options  for 
        CLMODE.EXE are:

        CLMODE [[modenum][+*-]] [m[montype] | t6=x t8=x t1=x t2=x]
        [modenum] mode number
        [+*-]        + selects 400 lines (default)
                     * selects 350 lines
                     - selects 200 lines
        [montype]    monitor type
        t6=x(Hz)     640x480   @ (0 = 60, 1 = 72)
        t8=x(Hz)     800x600   @ (0 = 56, 1 = 60, 2 = 72)
        t1=x(Hz)     1024x768  @ (0 = 87i, 1 = 60, 2 = 70, 3 = 72)
        t2=x(Hz)     1280x1024 @ (0 = 87i, 1 = Not available)

        For  example,  to  select mode 3 for  a  Super  VGA  monitor
        (montype 2), type the following command at the DOS prompt:

                        CLMODE 3+ m2[Enter]

                                                              Page 6

        To  select custom monitor timings with 640x480 at  60Hz  and
        800x600 at 72Hz refresh type:

                        CLMODE t6=0 t8=2[Enter]

        Typing an invalid option will display the command line  help
        text.  Typing [S] as a command line option will display  the 
        current Clmode settings.

        Following is a table of common monitor types.

        Monitor    Example     Horizontal   Vertical       Display
         Type                  Frequency    Frequency     Resolution
                                 (KHz)        (Hz)
        ------------------------------------------------------------
          0       IBM 8512       31.5          60         640X480
                  IBM 8513
                  IBM 8503

          1       IBM 8514       31.5          60         640X480
                  IBM 8515       35.5       43.5-Int      1024x768

          2       NEC 2A         31.5          60         640X480
                                 35.2          56         800X600

          3       NEC II         31.5          60         640X480
                                 35.2          56         800X600
                                 35.5       43.5-Int      1024X768

          4       NEC 3D         31.5          60         640X480
                                 37.8          60         800X600
                                 37.8       43.5-Int      1024X768

          5       Sony CPD-1304  31.5          60         640X480
                  NEC 3FGx       48.0          72         800X600
                  Nanao 9065s    48.0          60         1024X768
                  Nanao 9070U    48.0       43.5-Int      1280X1024

          6       NEC 4D         31.5          60         640X480
                  NEC 4FG        48.0          72         800X600
                  Nanao T240i    56.5          70         1024X768
                                 48.0       43.5-Int      1280X1024

          7       NEC 5D         31.5           60         640X480
                  NEC 5FG/6FG    48.0           72         800X600
                  Nanao T560i    58.3           72         1024X768
                  Nanao T660i    48.0        43.5-Int      1280X1024
                  Nanao F550i
                  Nanao F750i
                  Nanao 9400i
                  Nanao 9080i

                          Table 2: Monitor type examples

                                                              Page 7

        SetRES
        ------
        The   SetRES utility runs under Windows 3.1 and  allows  the 
        user  to change the screen resolution, number  of  available 
        colors, and to select either large or normal size fonts  and 
        system resources.

        After  new options have been selected, the user  can  either
        immediately  restart Windows, in which case the new  resolu-
        tion  will take effect immediately, or continue  working  in 
        the  current  resolution, in which case the  new  resolution 
        will take effect the next time Windows is started. 

        This application assumes that the Windows drivers have  been
        correctly installed and configured using Windows Setup.


        Installation
        ------------
        [] Start Windows.

        [] In  the  Program  Manager,  choose  File Run. Specify the
           diskette  drive  where  the Windows Drivers and Utilities
           Diskette is  inserted, and run  the  install program. For
           instance if the floppy is in drive A:, type

                        A:\INSTALL[Enter]

        [] When prompted, specify the Windows directory.

        [] Install and configure the actual Windows driver following
        the instructions in the Windows 3.1 section of this manual.

        SetRES  may  now be run by selecting the  SetRES  icon.  The
        first time that you run SETRES, the settings for the current 
        driver won't be correct, but go ahead and set them once, and 
        they will be correct from then on.

        If  you  are unsure what resolutions and colors  your  video
        card  can  support, refer to the section of this  manual  on 
        CLMode for information on how to determine available resolu-
        tions.

        For help on the SetRES utility, select Help from the program
        menu.


                                                              Page 8

        Display drivers
        ---------------
        The  Cirrus Logic video controller is 100%  VGA  compatible. 
        The display drivers described in this manual are supplied to 
        improve the resolution for each supported software  applica-
        tion package.

        It  can support improved text resolution, providing  greater
        readability  when using the supplied drivers  in  text-based 
        word  processing programs. It also supports higher  graphics 
        resolutions,  providing greater detail when using  the  sup-
        plied drivers in graphics-based programs.

        In each application section, there will be a brief introduc-
        tion  describing the application and the revision  level  of 
        the application supported by the supplied display drivers.

        The  installation instructions for each display driver  will
        follow  the  introduction section. Follow  the  instructions 
        carefully  to be sure that each display driver is  correctly 
        installed. All of the installation instructions assume  that 
        the Cirrus Logic Drivers Diskette is located in drive A:. If 
        drive B: is used, the instructions should changed  appropri-
        ately. 

        The  installation  utility (INSTALL.EXE) should be  used  to
        copy display drivers directly to the appropriate application 
        directories where they may be configured by the  application 
        software.


        Before you begin
        ----------------
        It is assumed that the user is familiar with DOS and certain 
        DOS  commands. Please review the  installation  instructions 
        and the associated DOS commands before attempting the actual 
        installation.

        Not all video modes will be available on all systems. If  an
        extended  mode driver is installed for a video mode that  is 
        not  available,  the application program will  not  function 
        properly.  There are a number of things that  determine  the 
        list  of  available video modes. Some of these  include  the 
        current  monitor type, the amount of installed  memory,  and 
        the revision of the VGA controller. To determine which modes 
        are  available before beginning the driver installation,  it 
        is  recommended  that the user run the  Clmode  program  and 
        examine the list of available video modes.


                                                              Page 9
        Microsoft Windows
        -----------------
        To  decide  which of the diskettes to use for  Windows  3.1, 
        run the version of CLMode that is shipped with these drivers 
        and on the opening screen, look at the fields that  identify 
        the chip type and amount of video memory. The chip type will 
        be CL-GD54??. The question marks will be either 02, 20,  22, 
        24,  26 or 28. Select the Windows 3.1 driver  diskette  that 
        matches your chip. The only exception to this is if you have
        a CL-GD5426 and the amount of video memory is 512K. In  this 
        case, use the diskette for the CL-GD5422 and CL-GD5424.


        Before upgrading from a previous release
        ----------------------------------------
        Before  installing  the new drivers you should  use  Windows 
        Setup  to  select the VGA or SUPER VGA video driver  so that
        when  you  install the new drivers, there is  no  chance  of 
        overwriting the driver that Windows is using to control your 
        screen.  Next  go to the system directory, and find  a  file 
        that  is named 'OEM?.INF' where the question mark is a  num-
        ber. There may be more then one of these. They (it?) are the 
        different OEMSETUP.INF files that have been used to  config-
        ure  Windows  for different devices. Using  an  editor  like 
        Notepad or Edit, look at them until you find the one that is 
        for  the previous version of the Cirrus Logic video  drivers 
        and delete it. This is not completely necessary, but if  you 
        don't  delete  old files the drop down box  for  Setup  soon 
        becomes  very cluttered with different versions of the  same 
        files. Also, in many cases the old files have been overwrit-
        ten by the new ones, so no longer exist anyway. 

        To clean out the system directory and keep from wasting disk
        space  it is a good idea to delete old drivers that  are  no 
        longer  needed. Before doing this step you must use  Windows 
        Setup  to  select  the  VGA  or  SUPER VGA  video driver and
        restart Windows.  Using  the  MS-DOS  delete  command or the
        Windows File Manager, delete  the  following  files from the
        \WINDOWS\SYSTEM directory of Windows. Not all of these files
        will  be  present  on  your  computer  depending on the chip
        revision that you are  using and the revision of the drivers
        that you are upgrading from.

                        16_1024.DRV
                        16_1280.DRV
                        256_1024.DRV
                        256_1280.DRV
                        64K_800.DRV
                        64K_1024.DRV
                        16M_640.DRV
                        AVGA.3GR
                        VDD542X.386

        Delete all of the files in the \WINDOWS\SETRES directory.

                                                             Page 10

        Installing Windows 3.1 display drivers
        --------------------------------------
        If you haven't already installed the SetRes utility program, 
        these  instructions will only install a single driver for  a 
        single  resolution. If you want to be able to easily  switch 
        between  different  resolutions, you should  install  SetRes 
        before this procedure.

        To  install  the Windows 3.1 drivers from  the  DOS  prompt,
        proceed as follows:

        [] Insure  that  Windows  3.1  is  already installed on your
           computer.

        [] From your Windows  directory, at  the  DOS  prompt,  type
           SETUP[Enter] to run the Windows SETUP.EXE program. Follow
           the  instructions  on  the  screen. When  you come to the
           screen  which  lists the hardware and software components
           such  as  display adapter (e.g. VGA, CGA, etc.), keyboard
           type,  mouse  type,  etc., go to the Display selection by
           using cursor keys to move the highlighted  bar  and press
           [Enter].

        [] From  the next menu listing of display options, scroll to
           the bottom of the list, and highlight the following text:

           Other (Requires disk provided by a hardware manufacturer)

           Press  [Enter],  and  when  prompted,  insert the Windows
           Display  Driver   diskette   into   drive  A:   and  type
           A:\[Enter].

        [] You  will  see  the  list of drivers and their associated
           resolutions, such as:

                        Cirrus 54xx v1.3, 1280x1024x16
                        Cirrus 54xx v1.3, 1024x768x16
                        Cirrus 54xx v1.3, 640x480x16
                        Cirrus 54xx v1.3, 640x480x256
                        Cirrus 54xx v1.3, 640x480x64K
                        Cirrus 54xx v1.3, 800x600x16
                        Cirrus 54xx v1.3, 800x600x256

        [] Highlight the desired choice by moving the cursor  to the
        correct display driver, and then press [Enter].

        [] Continue with the remainder of the setup procedure.


                                                             Page 11

        To install the  Windows  3.1 drivers  from  within  Windows,
        proceed as follows:
        ------------------------------------------------------------
        [] Insure that Windows  3.1  is  already  installed  on your
           computer and start Windows.

        [] From  the  Main  window  of  the  Program Manager run the
           Windows 3.1 Setup program.

        [] Select  Change Systems Settings...  from the Options menu
           of Setup.

        [] Click on the down arrow at the right side of the Display:
           line. Scroll to the end of the list of available  display
           drivers and select Other  display  (Requires  disk   from
           OEM)....

        [] Insert  the Windows display driver diskette into drive A:
           and type A:\[Enter] as the pathname, then click on OK.

        [] You  will  see  the  list  of available drivers and their
           associated resolutions, such as:

                        Cirrus 54xx v1.3, 1280x1024x16
                        Cirrus 54xx v1.3, 1024x768x16
                        Cirrus 54xx v1.3, 640x480x16
                        Cirrus 54xx v1.3, 640x480x256
                        Cirrus 54xx v1.3, 640x480x64K
                        Cirrus 54xx v1.3, 800x600x16
                        Cirrus 54xx v1.3, 800x600x256

        [] Highlight  by  moving  the  cursor to the desired display
           driver, and then click on OK.

        [] Continue with the remainder  of the setup  procedure. The
           changes will not take effect until Windows is restarted.
        

                                                             Page 12

        Autodesk - ADI 4.2
        ------------------
        The  ADI 4.2 driver provided with your Cirrus Logic  VGA  is 
        the TurboDLDClassic display list driver from Panacea. It has 
        only two purposes: 

        [] To speed up AutoCAD REDRAWs, PANs, and ZOOMs

        [] To provide a more productive, user-friendly, interface to
           AutoCAD   (via  the  features  described  later  in  this
           manual).

        The  driver  is memory-resident and inserts  itself  between
        AutoCAD  and the graphics board. It has no other  effect  on 
        AutoCAD's operation besides speeding the program up; it runs 
        with  AutoShade  2 with RenderMan and 3D Studio  to  provide 
        enhanced rendering support, but does not affect the speed of 
        these programs, since they do not support Display Lists. 

        Installing TurboDLDClassic does not change any of the  Auto-
        CAD  program files or alter any of the drawing files  stored 
        on disk. TurboDLDClassic was designed to be an  easy-to-use, 
        feature-filled  product that makes using AutoCAD faster  and 
        more productive, not one that makes AutoCAD more complicated 
        and difficult to use. 

        How does TurboDLDClassic make AutoCAD run faster? There  are
        three things the driver does to speed operation:

        [] AutoCAD stores drawings in a hierarchical structure, with
           simple  elements intermixed with complex ones. Every time
           the   screen   is   updated,  AutoCAD  must  decode  this
           structure.  TurboDLDClassic  works differently. While you
           are  working,   it  translates  the  normal  hierarchical
           structure  into a Display  List,  a series  of vectors or
           polygon fills. When you pan or zoom, TurboDLDClassic uses
           the  Display  List,  then writes the resulting vectors to
           the   video    board  hardware.  Since  the  hierarchical
           structure  does not have to be decoded,  drawing proceeds
           very quickly.

        [] TurboDLDClassic  also  maintains  a  Drawing  Cache.  The
           Drawing  Cache is  a  compressed list  which contains the
           current contents of a viewport.  This  pre-scaled portion
           of the Display List allows for even faster pans and zooms
           and redraws.

        [] TurboDLDClassic  gives  you  numerous  new user-interface
           features, such as the bird's eye view. (via the  features
           described later in this manual).

        By  how  much  does TurboDLDClassic increase  the  speed  of
        AutoCAD? PANs and ZOOMs, aided by only the Display List, run 

                                                             Page 13

        from  two  to twelve times faster than  a  non-display  list
        driver.  The Drawing Cache further speeds things up  to  the 
        point  that  REDRAWs can be up to twenty-five  times  faster 
        with  TurboDLDClassic,  compared  to  the  graphics  drivers 
        shipped with AutoCAD.


        The features provided by TurboDLDClassic include:

        * Bird's eye view.

        * Accelerated redraws, pans, and zooms.

        * Easy to use - no new commands or special menus to learn.

        * Protected-mode  ADI  4.2  driver  -  completely compatible
          with  AutoCAD  Release  12,  Release 11/386, 3D Studio and
          AutoShade 2 with RenderMan.

        * No memory conflicts. Works with AutoCAD's built-in Virtual
          Memory Manager

        * Includes   CustomColors,   which  lets  you  interactively
          customize your  logical  and  physical  colors from within
          AutoCAD.

        * Completely compatible with all Autodesk ADI 4.2 compatible
          third party software.

        * Supports   all  AutoCAD  Release  12  features,  including
          rendering to viewports and 31-Bit regen space.

        TurboDLDClassic  requires a '386, '486 or Pentium  based  PC
        which supports AutoCAD Release 12, 11/386, AutoShade 2  with 
        RenderMan, or 3D Studio V1.x/2.x. Additional extended memory 
        is recommended for optimal performance.


        Quick start guide
        -----------------
        This  section summarizes the basics of installing and  using 
        TurboDLDClassic.  Please  read the rest of  the  manual  for 
        details. 


        What does it do?
        ----------------
        TurboDLDClassic  's  main function is to  speed  up  AutoCAD 
        pans,  zooms  and redraws. The driver accomplishes  this  by 
        creating and maintaining a Display List - a  fast-displaying 
        object list of the current drawing - dramatically increasing 
        performance on pans and zooms.


                                                             Page 14

        In  addition  to offering display  list  speed  enhancement,
        TurboDLDClassic  provides a bird's-eye view to allow you  to 
        move around large drawings.


        What's the catch?
        -----------------
        The  only  resource used by TurboDLDClassic is  memory.  The 
        driver  actively uses about 300Kbytes of RAM  from  extended 
        memory  for its operation. This memory is drawn  from  Auto-
        CAD's  memory pool and therefore does not affect normal  DOS 
        operation.  The driver is loaded by AutoCAD at AutoCAD  load
        time and is unloaded when AutoCAD is exited.

        Additionally, the Display List size can vary from one  tenth
        to three times the size of the current drawing file, partic-
        ularly when using AutoCAD 12's 31-bit regen space.

        You  may wish to purchase and install additional RAM  before
        installing  TurboDLDClassic,  since it  shares  memory  with 
        AutoCAD. If AutoCAD is using a lot of memory,  TurboDLDClas-
        sic  may not have enough. If there is significant hard  disk 
        activity  while you are using TurboDLDClassic, it may be  an 
        indication that you should add more memory to your system.


        Installation
        ------------
        Insert  the Cirrus Logic drivers diskette into Drive A:  (or 
        B:).    Run   the   Cirrus   Logic   installation    program 
        (INSTALL.EXE), and choose the option for the  Autodesk/Auto-
        CAD  drivers and specify the drive and directory  where  you 
        want them copied to (such as C:\ACAD\DRV). 

        Since  the  start-up is a little bit different  for  AutoCAD
        Release 12 than it is for older versions, please follow  the 
        instructions  for the version of AutoCAD you will  be  using 
        TurboDLDClassic with.


        To configure AutoCAD 12
        -----------------------
        Begin   AutoCAD   with  the  reconfigure  switch  by  typing

                        ACAD -R[Enter]

        Choose  option 3, Configure Video Display from  the  AutoCAD
        configuration menu.

        Type  Y at the Do you want to select... message  to  display
        the available video options for AutoCAD.



                                                             Page 15

        Select  TurboDLDClassic  by  Panacea Inc. from the  list  of
        display options.

        NOTE
        ~~~~
        If you chose to install TurboDLDClassic into a sub-directory
        other than ACAD\DRV, be sure to modify the ACADDRV  environ-
        ment variable to include that sub-directory. Otherwise,  the 
        TurboDLDClassic  selection  will not appear in the  list  of 
        available drivers. 


        To configure AutoCAD 11/386
        ---------------------------
        Run the FASTACAD.BAT that was copied to the  TurboDLDClassic 
        sub-directory by typing:

                        C:\TURBODLD\FASTACAD[Enter]

        The  above example shows that TurboDLDClassic was  installed
        on drive C: in the TURBODLD sub-directory.

        Start  AutoCAD and reconfigure it to use TurboDLDClassic  by
        selecting option 5, Configure AutoCAD from the AutoCAD  main 
        menu.  From the next menu, select option 3, Configure  Video 
        Display.  Choose  Item  1, P386 ADI 4.0/4.1  (R11)  as  your 
        display  device.  (For more information,  see  your  AutoCAD 
        'Installation and Performance Guide.')


        TurboDLDClassic configuration
        -----------------------------
        After selecting the proper display device, the TurboDLDClas-
        sic driver configuration menu will appear.

        Set-up  of  TurboDLDClassic requires  configuration  of  its
        various  operating  parameters. These parameters  have  been 
        logically grouped into menus based on their interaction with 
        AutoCAD.  A quick trip through each menu will  complete  the 
        configuration  process.  Context sensitive help can  be  ob-
        tained  by typing [?] at any menu option. Please  note  that 
        the  DLDSETUP.HLP file must be present in order for help  to 
        appear.  If you get an error message, be sure that the  file 
        DLDSETUP.HLP  is in the ACAD\DRV sub-directory (R12), or  in 
        the TURBODLD sub-directory (R11).

        If at any point during the configuration process you want to
        change  an item on a previous screen, just press  the  [ESC] 
        key to back up. Selecting NO SAVE, EXIT at the main configu-
        ration  menu  will return you to the  AutoCAD  configuration 
        menu without making any changes.



                                                             Page 16

        At a minimum, a graphics board and screen resolution must be
        chosen from the Select Graphics Board/Resolution menu. If no 
        display options are configured, the driver will be automati-
        cally configured for Generic VGA, 640 x 480 resolution at 16 
        colors.

        The first menu, Select Graphics Board/Resolution, configures
        TurboDLDClassic  for  the graphics board,  and  display  and 
        rendering  resolutions  to  be used.  Prior  to  configuring 
        TurboDLDClassic, run the Clmode utility and check the  first 
        screen  to  determine which Cirrus Logic chip and  how  much 
        memory is on your VGA adapter. 

        [] Select Graphics Board  -  Selects the graphics chip being
           used

        [] Select Display Resolution  -  Selects  AutoCAD, 3D Studio
           and AutoShade main display screen resolutions

        [] Select  Rendering Resolution  -  Selects  AutoCAD 12,  3D
           Studio and AutoShade rendering resolutions

        NOTE
        ~~~~
        When  configuring  TurboDLDClassic's  display  options,  the
        Rendering  Board/Resolution  options  described  below  will 
        automatically  appear ONLY when configuring AVE  Render,  3D 
        Studio or AutoShade. Otherwise, the Display Board/Resolution 
        options will be the only menu choices available.

        Basic Configuration options set AutoCAD screen  characteris-
        tics,  number of text lines in the command-line  area,  font 
        size and dual screen mode.

        * AutoCAD Text Lines - Selects number of  lines  in  AutoCAD
          command  prompt  area.  The default is 3 lines, but values
          from  1 to 10 can  be  specified.  A  number larger than 3
          might be useful if you are  using this  driver  in a  high
          resolution mode  with small fonts, eliminating the need to
          frequently  swap  back  and  forth  between  the  text and
          graphics screens.

          If you do not want any lines of text at the bottom  of the
          display, use AutoCAD to disable the command area (see  the
          AutoCAD 'Interface,  Installation  and  Performance Guide'
          for  more  information).  Press  [Return] to continue with
          font selection.

        * Font  Size  -  Selects AutoCAD display screen font or font
          file to  be  used.  Choose the Font Size you would like to
          use for your AutoCAD menus, pull-downs, and dialog  boxes:
          8x8 / 8x14 / 8x16 / 12x20 / 12x24.  For  resolutions  over


                                                             Page 17

          800x600 we recommend the 12x20 or 12x24 fonts. The default
          is the  8x14 font.

        * Dual  Screen  Mode  -  Enables  or  disables  dual  screen
          operation of AutoCAD.

        User Interface options include the parameters for  maneuver-
        ing  within AutoCAD. Using these options, the  Big  Picture, 
        Panacea's  bird's-eye view, can be configured to  suit  your 
        needs  or allow for better differentiation within a  complex 
        drawing. 

        * Double  Click  - The Double Click option allows you to set
          the delay  for TurboDLDClassic's Big Picture pop-up.  This
          time represents the largest amount of time that can elapse
          between  the  release  of  the  digitizer  button  and the
          subsequent  press  of the same button in order to detect a
          double  click  and  display  the Big Picture. Setting this
          number too  low  will  result  in the computer seeing  two
          separate clicks, while  setting the time too high may slow
          down  response  time  for  single  button  presses. Values
          between 10 and 30 are recommended.

          The  Double  Click  time  is  measured  in  hundredths  of
          seconds. PC  systems  have a timing resolution of 5/100ths
          of a second, therefore, the entered time is rounded by the
          driver to most closely approximate the nearest multiple of
          5.  This  means that a time setting of 23 is the same as a
          setting  of  27,  both of which get rounded to 25 (or one-
          quarter of a second).  In  simplest  terms, when adjusting
          the timing value, it is best to use multiples of 5.

        * BP Button  -  Sets mouse/digitizer button to use  for  Big
          Picture. With the BP Button option, TurboDLDClassic  gives
          you the flexibility to use a double click on an  available
          digitizer/mouse button as a Big Picture pop-up button.  On
          the BP Button menu line, enter the number of any available
          digitizer  button  other  than  button  1  -  button  1 is
          reserved as the pick button. Within AutoCAD, simply double
          click the chosen button to invoke the Big Picture.

        * BP  Highlight Mode  -  Controls  how  the Big Picture will
          appear  on  the  screen.  Patt  Line  will display the Big
          Picture  using dotted lines to form the outer bounding box
          and the zoom crosshairs.  XOR  Rect will use a contrasting
          rectangle to display the Big Picture. The Both option will
          use a combination of Patt Line and XOR Rect to distinguish
          the Big Picture.

        * BP  Refresh  -  In it's fastest mode, TurboDLDClassic does
          not refresh the Big Picture until a DLDREFRESH command  is
          issued. Depending on a drawing's complexity, in this mode,
          the Big Picture could become confusing, displaying vectors

                                                             Page 18

          that  are  now actually  erased, and no longer part of the
          drawing.  To  configure  the  Big Picture to be updated as
          objects  are drawn  or  erased,  enable the BP Refresh. If
          speed is a major concern, disable it.

        * BP Cache - Enables or disables TurboDLDClassic's  internal
          memory  cache  for Big Picture functions. This cache  will
          speed  up   Big   Picture   operations  on  some  graphics
          platforms, primarily  on  TIGA-based  graphics boards. For
          this  reason,  the  BP  Cache  is  normally disabled. As a
          reference,  on  VGAs,  the  performance  benefit of the BP
          Cache  is  as  little as  1%.  With  a TIGA-based graphics
          board,  however,  the  performance benefit of the BP Cache
          is as high as 400%.

        The Expert Configuration menu sets the function of TurboDLD-
        Classic  itself. This menu allows for customization  of  the
        driver  for speed or to adjust for memory constraints.

        * Display  List  -  Enables  or  disables  the  display list
          feature of  TurboDLDClassic.  This option should always be
          set  to  enable,  disabling  the  Display  List will cause
          TurboDLDClassic  to  run  as an  ordinary non-display list
          driver.

        * Drawing  Cache  -  Enables  or  disables TurboDLDClassic's
          internal  drawing cache, a compressed list of the  current
          viewport,  which speeds up  pans  zooms and redraws. As in
          the  Display List option, Drawing Cache should normally be
          enabled. In low memory situations, it may be desirable  to
          disable the  Drawing  Cache.  Disabling  the drawing cache
          will free-up  memory for AutoCAD but may or may not have a
          visible  effect  on  your  ZOOM  and PAN performance.  For
          example, on VGAs,  the  performance benefit of the drawing
          cache  is  as  little  as  5%.  With a TIGA-based graphics
          board,  however,  the performance  benefit  of the drawing
          cache is as high as 400%.

        * AutoCAD  Logical  Drawing  Space  -  Using  AutoCAD 31-Bit
          Space,  configures  TurboDLDClassic  for  use with AutoCAD
          R12's 31-Bit  logical  drawing space.  When  set  to  Yes,
          the  driver  will  use  AutoCAD's  extended 31-Bit drawing
          space.  Selecting No, will  use  a  15-Bit  drawing space,
          similar to that of AutoCAD R11.  The  31-Bit logical space
          allows you to extend  your  Regen-less zooming  ability by
          a factor of several million,  at the cost  of more memory.
          Additional memory  is  used  by  AutoCAD  for  the drawing
          space,  and  by  TurboDLDClassic  for  the  Display  List.
          31-Bit  zooming and panning  is  about  10% - 20%   slower
          than  for  15-Bit  logical  space.  The Use AutoCAD 31-Bit
          Space setting is ignored for AutoCAD R11 installations.



                                                             Page 19

        * Internal  Command  Echo  -  The  echo  of  TurboDLDClassic
          internal commands can  be  enabled  or  disabled  with the
          Internal  Command  Echo  option.  If you would like to see
          TurboDLDClassic's internal commands display at the AutoCAD
          command line as they are executed, enable this option.

        * Big Picture Zoom  Mode - Sets the Big  Picture  (BP)  zoom
          definition area display options. In a zoomed view  of  the
          static BP, as the current viewport is  zoomed  or  panned,
          Float mode  causes  the  image  in  the  BP to move around
          within the bird's-eye  window, keeping the zoomed viewport
          area  fixed  in  the center of the bird's-eye. Freeze mode
          will lock the  current BP  contents into place to  provide
          a  better overall frame of reference.

        * Regen Mode - As a convenience feature, a Regen Mode option
          has been added to TurboDLDClassic. A Fast Regen will store
          the  AutoCAD  drawing  until  the  Display  List  has been
          created, and then display it, all at once. The Incremental
          mode displays the drawing in 'chunks' as the display  list
          is created.  The  Fast  mode  causes   Regens  to  process
          approximately 5%-10% faster than  the incremental. Neither
          mode changes memory requirements.

        After  all  options  have been set, use the  arrow  keys  to
        scroll  down to the Save and Exit option and then press  the 
        [Enter] key to continue.

        Next,  configure the AutoCAD screen display  characteristics
        and then type [Y] to accept the changes.
        Exit to the AutoCAD drawing editor to begin using  TurboDLD-
        Classic.

        The last step in setting-up TurboDLDClassic is to  configure
        the colors for AutoCAD. From the AutoCAD Command Line,  type 
        DLDCOLOR[Enter],  to start  CustomColors,  TurboDLDClassic's 
        color configuration utility. Make any desired color  changes 
        and then Save the new color palette and then Exit to  return 
        to the drawing editor.


        Verifying your TurboDLDClassic installation
        -------------------------------------------
        To  verify  that TurboDLDClassic is  running  and  installed 
        correctly, follow one of these two simple tests.

        * If you have the AutoCAD side menu enabled,  look  for  the
          Panacea Logo in the lower right-hand corner.

        * If you are  running  AutoCAD without  a  side  menu,  type
          DLDVER[Enter]  at the AutoCAD command prompt. If TurboDLD-
          Classic is loaded and running, this command should  return
          your current version, and serial number.

                                                             Page 20

        Reconfiguring TurboDLDClassic
        -----------------------------
        To reconfigure TurboDLDClassic follow the instructions below 
        for your version of AutoCAD, Release 12 or Release 11.


        AutoCAD Release 12
        ------------------
        If you need to make changes to your Release 12 TurboDLDClas-
        sic configuration, type CONFIG[Enter] at the AutoCAD command 
        prompt  or  use ACAD -R[Enter] when  starting  the  program. 
        Select  option 3, Configure Video Display. Answer  No[Enter] 
        to  the  Select a new video driver ... prompt  to  start the
        TurboDLDClassic  configuration  program.  Make  the  desired 
        changes to the driver and then Save and Exit to continue  to 
        the AutoCAD drawing editor.


        AutoCAD release 11
        ------------------
        To  change  a  Release 11 configuration,  select  option  5, 
        Configure AutoCAD from the AutoCAD main menu, and then  from 
        the  configuration  menu, select option 3,  Configure  Video 
        Display.  Answer  no to the Select a new  video  driver  ... 
        prompt  to start the TurboDLDClassic configuration  program. 
        Change  the desired driver options. Save and Exit to  return 
        to  the  AutoCAD  configuration menu. Open or  begin  a  new 
        drawing. 

        To  completely reconfigure TurboDLDClassic  using  Panacea's
        defaults, delete DLDSETUP.DAT from either the \ACAD\DRV sub-
        directory (R12) or the TURBODLD sub-directory (R11) and then 
        follow the Driver Configuration instructions earlier in this 
        chapter.


        Configuring an AutoCAD 11 environment
        -------------------------------------
        During   the   TurboDLDClassic   installation   process,   a 
        FASTACAD.BAT  file is created and placed into  the  TURBODLD 
        sub-directory.  FASTACAD.BAT  contains four lines  that  set 
        four  separate environment variables: DLDCFG - used by  Tur-
        boDLDClassic  to  find all of its configuration  files;  and 
        DSPADI,  RCPADI,  RDPADI - used by AutoCAD,  3D  Studio  and 
        AutoShade  2 w/RenderMan, respectively, to find  the  driver 
        file. FASTACAD.BAT must be run prior to starting AutoCAD R11 
        and only needs to be run once per system boot. For automatic 
        loading  of the environment variables, FASTACAD.BAT  may  be 
        added to the AUTOEXEC.BAT file or an AutoCAD start-up  batch 
        file. 




                                                             Page 21

        To  add FASTACAD.BAT to your AUTOEXEC.BAT file,  insert  the
        line    
                        CALL D:\TURBODLD\FASTACAD

        anywhere in the file. The above example assumes that  FASTA-
        CAD.BAT  resides  in  a sub-directory  on  drive  D:  called 
        \TURBODLD.


        If you don't wish to put FASTACAD in your AUTOEXEC.BAT file,
        you may put it in a batch file which also starts AutoCAD, or 
        simply remember to run the file before starting AutoCAD.

        If you get the message Out of Environment Space when you run
        FASTACAD.BAT,  you will need to enlarge your system's  envi-
        ronment. This is accomplished by adding the following line,

                        SHELL=C:\COMMAND.COM /P /E:768

        to your CONFIG.SYS file. The /E:768 specifies an environment
        size  of 768 bytes. Change this number as  appropriate.  You 
        will need to reboot after modifying your CONFIG.SYS file, in 
        order for the changes to take effect. 



        Configuring AutoShade, 3D Studio and AVE Render
        -----------------------------------------------

        AutoShade
        ---------
        To  configure AutoShade v2.0 to use  TurboDLDClassic,  first 
        run  the  FASTACAD.BAT file from your  TurboDLDClassic  sub-
        directory to set the AutoShade environment variables.  Next, 
        start  AutoShade with SHADE /R[Enter], which will allow  you 
        to  reconfigure  AutoShade. For the display  device,  select 
        P386  Autodesk Device Interface display driver, and for  the 
        rendering display select the P386 Autodesk Device  Interface 
        rendering driver. If you are running the display and render-
        ing  screen on the same monitor (i.e. single monitor),  make 
        sure to tell AutoShade this. A single monitor approach  will 
        require  a  redraw of the display screen after  a  rendering 
        screen.

        Next,  follow the same installation steps that were used  to
        select the graphics board and display and rendering  resolu-
        tions for AutoCAD.







                                                             Page 22

        3D Studio
        ---------
        Configuring 3D Studio requires three steps. First, you  need 
        to  set the environment variables for 3D Studio  by  running 
        the PANA3DS.BAT file that was copied into your TurboDLDClas-
        sic  sub-directory. Next, edit the 3DS.SET file, located  in 
        your 3DS directory. The following three lines may be changed 
        to  use the RCPADI rendering driver. Locate the  lines  that 
        begin with

                        RENDER-DISPLAY
                        MAIN-DISPLAY
                        MATERIAL-DISPLAY

        and change them to read
                        RENDER-DISPLAY=RCPADI
                        MAIN-DISPLAY=RCPADI
                        MATERIAL-DISPLAY=RCPADI

        Make  sure  to  remove the ';' or any  spaces  that  may  be
        present at the beginning of the line.

        It  is only necessary for the RENDER-DISPLAY line to be  set
        to  RCPADI in order to render at high resolution. If you  do 
        not  need  a high resolution main display screen or  if  you 
        will  not be using the materials editor, you may keep  MAIN-
        DISPLAY and MATERIAL-DISPLAY set to their defaults.

        NOTE
        ~~~~
        For  3D  Studio 1.x, there is no  RENDER-DISPLAY  line.  The
        corresponding line is DEFAULT-DISPLAY and should be  changed 
        to read 

                        DEFAULT-DISPLAY="RCPADI"

        The  quotes around RCPADI must be used for this  version  of
        3D Studio.

        The  MATERIAL-DISPLAY should only be configured  for  RCPADI
        when BOTH the Display AND Rendering Resolutions of TurboDLD-
        Classic are configured for 256 color resolutions. An  unpre-
        dictable  Materials  Editor screen will appear  if  anything 
        other  than 256 colors is selected. If you are unsure  about 
        the function of the Materials Editor screen, use the Materi-
        als Editor as VGA, you should not have any problems at  all. 
        Please  note too, that the use of the Materials Editor  will 
        not give you any more colors to choose from.

        Save the above changes and start 3D Studio to begin the last
        part of the configuration procedure.



                                                             Page 23

        From your 3D Studio directory, delete the file 3DADI.CFG  by
        typing

                        DEL 3DADI.CFG[Enter]

        This  will cause 3D Studio to start in  its  reconfiguration
        mode. Start 3D Studio by typing 3DS[Enter].

        During  the  3D  Studio reconfiguration  start-up,  you  are
        prompted  with  a series of questions. After  the  first  3D 
        Studio question appears and is answered, the TurboDLDClassic 
        configuration  program will appear. Select a graphics  board 
        and  display  and  rendering resolutions as  you  would  for 
        AutoCAD use.

        Because  RCPADI device drivers, by definition, are  combined
        display and rendering devices, during 3D Studio reconfigura-
        tion, you will be brought to the TurboDLDClassic  configura-
        tion  menu  more than one time, once each  for  Display  and 
        Rendering.  It  is not necessary to  select  display  and/or 
        rendering  resolutions  a  second  time.  Simply  press  the 
        [Enter]  key  to remove the help screen and  then  highlight 
        Save  and  Exit to continue to the next  question.  Also  if 
        FASTACAD.BAT  is used instead of PANA3DS.BAT to  define  the 
        AutoCAD operating environment, the TurboDLDClassic  configu-
        ration  menu will also appear for RDPADI and DSPADI  devices 
        if they are present. 

        NOTE
        ~~~~
        TurboDLDClassic only provides still rendering support for 3D
        Studio. TurboDLDClassic will not play back  rendered .FLI or
        .FLC files.  This  is a limitation of 3D Studio. The Mapping
        Icon colors, which are usually yellow and green, will appear 
        as black when using any external ADI driver. Also, 3D Studio 
        has  problems with large fonts. It is recommended  that  you 
        use the default font settings.


        AVE Render
        ----------
        AutoCAD  12's  AVE Render uses  TurboDLDClassic's  rendering 
        capabilities  to render objects and drawings. If AVE  Render 
        has never been configured, when you first select the AutoCAD 
        render  command, you will be forced to run through the  con-
        figuration process. You will be prompted as follows.

        [] Select a Rendering Display Device.  Since TurboDLDClassic
           is  a combined  display/rendering device,  choose item 1,
           P386 ADI Combined   Display/Rendering  Driver  from   the
           available choices.



                                                             Page 24

        [] Configure  the  Rendering  Graphics Board and Resolution.
           Here   the  TurboDLDClassic configuration  program   will
           appear on the screen.  Press  the [Enter] key to continue
           past  the  help  screen   and    display  the   Rendering
           Configuration   menu.   Choose   Select  Graphics  Board/
           Resolution to display graphics board  and resolution menu
           selections. First, choose Select  Render  Graphics  Board
           to select the graphics board to be used  for  renderings.
           Next,  choose  Select  Render  Resolution  to  select the
           desired  rendering resolution from the list of  available
           choices.  Select  Return to Previous Menu and then select
           Save and Exit.

        [] Select Render Mode. Then select the  rendering  mode  for
           TurboDLDClassic.  Select  either  Render  to  Viewport or
           Render  to  Screen depending on how you wish to view your
           renderings.  Note that  in  order to render to a viewport
           you  must  be  using a display resolution of at least 256
           colors. Otherwise,  AVE Render will not allow a render to
           viewport selection.

        [] Select  a  Render  Hard  Copy  Device. If you are using a
           render hard copy device select  your device type from the
           list of choices. If you are not using a hard copy device,
           accept the default of NULL.

        After configuring AVE Render, you will return to the drawing
        to render the current drawing.

        If   you  have  previously  configured  AVE   Render,   type
        RCONFIG[Enter]  at  the AutoCAD command prompt  to  manually 
        display the Render Configuration menu. Follow these steps to 
        re-configure AVE Render.

        [] Select  option  2, Configure Rendering Device to choose a
           new  rendering driver.  Answer  [Yes]   to   the   Select
           Different Rendering Device question.

        [] Select option 1, P386 Combined Display/Rendering Driver.

        [] Configure  the  rendering  graphics board and resolution.
           Here  the TurboDLDClassic   configuration  program   will
           appear on the screen.  Press  the [Enter] key to continue
           past  the   help  screen   and  display   the   Rendering
           Configuration   menu.   Choose   Select   Graphics Board/
           Resolution to display graphics  board and resolution menu
           selections. First, choose Select  Render  Graphics  Board
           to  select the  graphics board  to be used for rendering.
           Next,  choose  Select  Render  Resolution  to  select the
           desired  rendering resolution from the list of  available
           choices. Select Return to Previous Menu and then Save and
           Exit.


                                                             Page 25

        [] Select  the rendering  mode  for  TurboDLDClassic. Select
           either Render to Viewport  or  Render to Screen depending
           on how  you wish  to view your  renderings.  Note that in
           order to render to a viewport you must be using a Display
           resolution  with  at  least  256  colors.  Otherwise, AVE
           Render will not allow a render to viewport selection.

        [] Select  Exit  to  the  Drawing  Editor  from  the  Render
           Configuration  menu and then type [Y] to keep the changes
           you've  just  made.  Press  the [F1] key to change to the
           graphics screen if necessary.


        Changing colors
        ---------------
        Included  with  TurboDLDClassic is  the  CustomColors  color 
        configuration utility. What is so unique about  CustomColors 
        is  that  it  gives you the ability to modify  all  of  your 
        changeable  AutoCAD  colors,  including  menu  colors,  text 
        colors,  dialog box colors, and even drawing  colors,  while 
        running AutoCAD.

        CustomColors simulates an AutoCAD screen, complete with  all
        possible  objects.  At the AutoCAD  drawing  editor  command 
        line, type DLDCOLOR[Enter] to edit the color  configuration. 
        Once  you enter the utility, you are provided with the  fol-
        lowing configuration menu at the bottom of the screen:

                (O)bject,
                (D)rawing,
                (P)hysical,
                (A)DI reset,
                (V)GA reset,
                (L)oad,
                (S)ave,
                (E)xit

        The menu items perform the following functions.

        * Object  -  Selecting this option will  allow you to change
          the  color  of  any  AutoCAD  screen  object,  such as the
          graphics area background color, the menu area text  color,
          or the border line color.  Select  the object  whose color
          you want to change by moving the highlight box around with
          the  left  and  right  cursor  control  keys  and pressing
          [Enter] when you have highlighted the desired object. Note
          that  a  one  line  description  of  the  object  type  is
          displayed  at  the  top of  the screen as you move the box
          around.   Once  you  have  selected  the  object,  another
          highlight  box will appear around  the color boxes nearest
          to the bottom of the screen. These are the physical colors
          that  the  video  board  supports.  Use the left and right
          cursor  keys  to select the  physical color to be used for

                                                             Page 26

          the object you have selected and press [Enter]. The screen
          will  quickly  redraw with the new color selection for the
          object you have chosen, and you  will be back at the start
          of object  selection  in case you want to change the color
          of another object.

          Note  that at any time during color configuration, you can
          press the [Esc] key once or twice and return  to  AutoCAD.
          Also, pressing the question mark [?] key will provide  you
          with context sensitive help.

        * Drawing - This option allows you to modify AutoCAD drawing
          colors 0, 8  and 9, in a fashion similar to  the  way  you
          change object colors.

          When  this  option is selected, a highlight square appears
          in  the  drawing  color  area  of  the  simulated  AutoCAD
          display.  The  square  can  be  manipulated using the four
          cursor keys. You may notice that the drawing color portion
          of  the display is laid  out  just like the CHROMA drawing
          supplied  with   AutoCAD.  When  you  press  [Enter],  the
          highlight moves down to the 16 physical colors, just as it
          does during the object  color selection.  Using the  arrow
          keys, pick the  physical  color  you want to represent the
          selected  drawing  color.   Press  [Enter]  to  have  your
          selection take effect.

        * Physical  -  choosing the  Physical  option  from the menu
          allows you to alter the red, green, and blue components of
          the  physical  colors.  A highlight box will appear in the
          row of 16 physical colors at the bottom of the screen. Use
          the  arrow  keys  to select the color you wish to edit and
          press [Enter].  Three  sliders will appear near the bottom
          of the display, with the horizontal position of the slider
          for each of the  color  components (red, green, or blue  -
          RGB)  indicating  the relative intensity of the component.
          You  can  use  the  left  and right arrow keys to move the
          slider  for  the  selected  component, or type in a number
          from 0 to 255.

          Many graphics boards do not support 255 different intensi-
          ties  for  each color component. Therefore, when you enter
          an intensity,  Custom  Colors will round it to the nearest
          intensity which your graphics board supports. For example,
          VGAs support 64 intensities per RGB color component.  This
          means  intensities  increase  in  multiples of 4 (256/64),
          therefore an intensity of 0 is the same as an intensity of
          3.

          The up and down arrows allow you to select which component
          you  want  to  alter.  As  you manipulate the sliders, all
          objects  on  the  display  that are of the same  color  as
          the  selected  physical color will change in hue. This way

                                                             Page 27

          you  can  visually  determine the most appropriate setting
          for your display. Pressing [Enter] will set the RGB values
          you   have  selected  for  the  physical  color  you  were
          modifying.

        * ADIreset  -  constructs  a  default ADI color palette,  as
          defined  in   the   Autodesk   Device   Interface   Driver
          Development Kit.

        * VGAreset  -  constructs a default VGA color palette in the
          first  16  color  entries.  The  remaining  palette colors
          remain identical to those used for ADI devices.

        * Load  -  reloads  the  color information  from  the   file
          DLDCOLOR.DAT. It will be loaded from the directory pointed
          to by DLDCFG (AutoCAD R11), or from the AutoCAD  R12  \DRV
          directory.  If  DLDCOLOR.DAT  cannot  be  found,  an error
          message will be displayed.

          This command is useful because it allows you to go back to
          your  previously  edited  color  configuration in case you
          have made  some  mistakes  in configuring your colors that
          you want to undo.

        NOTE
        ~~~~
        Don't   Accidentally   Wipe  Out  Your  Changes.   Selecting
        ADIreset, VGAreset, or  Load will irrevocably wipe  out  any
        current  color  changes  you  may have made, unless you have
        just saved your  new  setting,  so  use  them  only when you
        really need  to, such  as  when  you have made so many color
        changes  that  you   can't  seem to get back to a reasonable
        place and just want to start over.

        * Save - Saves the current color palette to DLDCOLOR.DAT. It
          will be saved to the directory pointed to  by  the  DLDCFG
          environment  variable  in  FASTACAD,  or  to the \ACAD\DRV
          (R12) directory if FASTACAD is not used.

        * Exit  -  Exits  CustomColors.  If  you  have  made palette
          changes, but not saved them, you will be asked if you want
          to save your changes before exiting.

        When  running  at more than 8 bits-per-pixel  (256  colors),
        setting  physical colors via DLDCOLOR will have  no  visible 
        effect until a SAVE and EXIT occurs.


        TurboDLDClassic commands
        ------------------------
        TurboDLDClassic  offers  AutoCAD  users  many  features  and 
        productivity options. This section alphabetically lists  the 
        basic  commands  found in TurboDLDClassic and  provides  the 

                                                             Page 28

        correct  syntax  for  their usage. For a  brief  summary  of
        TurboDLDClassic commands type DLDHELP at the AutoCAD command 
        prompt.

        The  most important feature of TurboDLDClassic is the  addi-
        tion  of  a world view called The Big PictureTM  or  BP  for 
        short.  Bringing up the BP allows you to view where  in  the 
        current  drawing  you are currently located in  your  active 
        viewport,  and it also gives you the ability to  dynamically 
        move  to another part of the drawing without having to  exit 
        the function you're currently executing.


        DLDBIGPIC
        ---------
        To  call  up the Big Picture, at the AutoCAD  command  line, 
        type  DLDBIGPIC[Enter],  or  double click  the  right  mouse 
        button  or button 2 on your digitizer puck. (if you  haven't 
        redefined  your BP Button double click). This will bring  up 
        the BP on the display. You will see cross-hairs and a  high-
        lighted  section indicating which part of the whole  drawing 
        you're  currently  viewing - the size of the image  will  be 
        determined by the AutoCAD logical drawing space being  used, 
        15-Bit or 31-Bit. The selection or pick box will have an 'X' 
        through  it. Move the mouse/digitizer around to locate  your 
        pick  box.  If you can't see a small box moving,  click  the 
        left  mouse button (the pick button) to size down  the  pick 
        area. In size mode, the pick box will have a right  pointing 
        arrow in it ('-->'). If the contents of the BP are too small 
        to work with, you may increase the size of the image in  the 
        window  by pressing the [+] key on your numeric keypad  this 
        performs an incremental zoom within the BP. Likewise, press-
        ing the [-] key will reduce the size of the contents of  the 
        BP. Pressing the [Home] and [End] keys will put the BP  into 
        its smallest and largest size, respectively. The smallest BP 
        size  is defined as being exactly the same view as  that  in 
        the  viewport referenced by the BP. The largest BP  size  is 
        defined  as  the largest image possible  without  causing  a 
        Regen.

        The BP pick box is always proportioned to the proper  aspect
        ratio  for  the current viewport. Clicking the  pick  button 
        again  will put you back into the pick box move mode  ('X'). 
        This  operation  is very similar to using the  Zoom  Dynamic 
        feature of AutoCAD. Once you have positioned the pick box on 
        the  area you would like displayed in the  active  viewport, 
        click any button other than the pick button to initiate  the 
        zoom,  or  press the [Enter] key. If you want to  abort  the 
        operation,  just hold any button down, other than  the  pick 
        button, until the BP disappears. You can also hit any key on 
        the  keyboard,  other than [Enter], to cancel the  BP.  Note 
        that  the BP is updated with new drawing commands, but  that 


                                                             Page 29

        moves  or erases will not update the image unless  BPREFRESH
        is enabled. A DLDREFRESH or a REGEN will manually update the 
        BP with the current drawing changes.


        DLDBPCACHE*
        -----------
        Enables or disables TurboDLDClassic's internal cache for  BP 
        features. This cache speeds up TurboDLDClassic's Big Picture 
        functions.  DLDBPCACHE  is  normally  disabled.  Performance 
        benefits  of the BP Cache with will vary from  one  graphics 
        platform to the next. For example, on VGAs, the  performance 
        benefit of the BP Cache is as little as 1%. 



        DLDBPDIM
        --------
        Resizing  and  repositioning the BP can be  accomplished  by 
        typing  this command at the AutoCAD prompt. DLDBPDIM  allows 
        you to tell the driver where you want the BP placed and  how 
        large  you want it to be. The size is limited to  being  be-
        tween  one-quarter  and one-half the width of  the  display. 
        This  command functions like the pan/zoom selection  box  in 
        the  BP,  as far as positioning and  dimensioning  goes.  To 
        abort,  hold the right mouse button, or any other  digitizer 
        button, down until the moving box disappears.


        DLDBPFREEZE
        -----------
        Sets  the  Big  Picture (BP) zoom  definition  area  display 
        options.  DLDBPFREEZE  toggles  the Big  Picture  Zoom  Mode 
        parameter in TurboDLDClassic's Expert Configuration Menu.

        In  a zoomed view of the static BP, as the current  viewport
        is  zoomed or panned, Float mode causes the image in the  BP 
        to  move  around within the bird's-eye window,  keeping  the 
        zoomed viewport area fixed in the center of the  bird's-eye. 
        Freeze mode will lock the current BP contents into place  to 
        provide a better overall frame of reference.


        DLDBPHILIGHT*
        -------------
        Changes the highlight used to display the Big Picture  among 
        three modes, Patt Line, XOR Rect, and Both. Patt Lines  will 
        use  dotted lines to outline the Big Picture pick  box.  XOR 
        Rect will use a contrasting rectangle to highlight the  pick 
        box,  and Both will use a combination of Patt Lines and  XOR 
        Rect.



                                                             Page 30

        DLDBPREFRSH*
        ------------
        This convenience feature of TurboDLDClassic, toggles the Big 
        Picture update mode. If disabled, the BP is updated manually 
        by  issuing a DLDREFRESH command. When enabled,  DLDBPREFRSH 
        will cause the BP to refresh automatically when an object is 
        drawn or erased. The BP operations therefore will be  slower 
        with DLDBPREFRSH enabled.


        DLDBPSTATIC
        -----------
        Toggles the BP to stay on the screen at all times. Use  this 
        command if you want the BP on the screen in order to conven-
        iently move into it whenever you want to zoom or pan. Typing 
        DLDBPSTATIC will put up the BP at the position you set  with
        DLDBPDIM. Note that the static BP will disappear when  other 
        menus  pop-up on the screen, and it will also  disappear  if 
        you draw any objects which may overwrite the BP. With  these 
        exceptions,  the BP will remain on-screen until  you  either 
        exit the drawing screen or you type DLDBPSTATIC again.


        DLDCOLOR
        --------
        Invokes  CustomColorsTM, Panacea's color configuration  pro-
        gram. 


        DLDCOMPACT
        ----------
        Forces  a  manual  garbage collect of  Display  List  memory 
        thereby  returning  unused display list memory back  to  the 
        AutoCAD memory pool.


        DLDDCACHE*
        ----------
        This  command toggles the TurboDLDClassic drawing  cache  on 
        and  off.  The  Drawing Cache is a compressed  form  of  the 
        current viewport which speeds pans, zooms and redraws 


        DLDDLIST*
        ---------
        This command toggles the display list function of  TurboDLD-
        Classic on and off.







                                                             Page 31

        NOTE
        ~~~~
        Please note that if the display list is turned off, you will
        be  running AutoCAD as though you were using a standard  non 
        display  list driver - pans, zooms and redraws will be  MUCH 
        slower with DLDDLIST disabled.


        DLDECHO*
        --------
        Toggles  internal  TurboDLDClassic command  echoing  at  the 
        AutoCAD  command  line. When  TurboDLDClassic  commands  are 
        executed  via the digitizer or pop-up menus,  they  generate 
        internal  commands  which will be displayed at  the  AutoCAD 
        command  line  if  DLDECHO is enabled.  Disable  DLDECHO  to 
        simplify the command line.


        DLDHELP
        -------
        Provides  a list of TurboDLDClassic commands  with  one-line 
        description  of each, within AutoCAD. It's recommended  that 
        you flip to the text screen by pressing the <F1> key to view 
        the output.


        DLDREFRESH
        ----------
        Refreshes  the  Big  Picture to  reflect  the  most  current 
        changes  to  a drawing. If the static BP is up, it  will  be 
        updated. If not, the next time the BP is brought up, it will 
        contain  a current representation of your drawing,  provided 
        no changes were made between the DLDREFRESH command and  the 
        DLDBIGPIC command. For Automatic update of the Big  Picture, 
        see the DLDBPREFRSH command above.


        DLDSTAT
        -------
        Displays  the current TurboDLDClassic status. A  listing  of 
        the current TurboDLDClassic parameters will be displayed  at 
        the  AutoCAD command line. A flip to the graphics screen  is 
        recommended for this command. 


        DLDUSAGE
        --------
        Use  DLDUSAGE  if you want a to-the-byte  breakdown  of  how 
        memory is being used, specifically for display list process-
        ing. DLDUSAGE returns information regarding the memory  each 
        viewport  is  occupying.  Since  AutoCAD  supports  multiple 
        viewports, it is possible to have multiple display lists.


                                                             Page 32

        DLDVER
        ------
        Displays  the  TurboDLDClassic version,  serial  number  and 
        registered user's name at the AutoCAD command line.


        DLDVISREGEN*
        ------------
        Toggles  between  the Fast and Visible Regen modes  of  Tur-
        boDLDClassic. A Fast Regen will create the display list  and 
        then  display the drawing all at once. A Visible Regen  will 
        display the drawing in chunks as the display list is  creat-
        ed. This command is a dynamic form of the Regen Mode parame-
        ter  in the Expert Configuration Menu.  Since  TurboDLDClas-
        sic's  Fast Regen mode is faster than AutoCAD's,  we  highly 
        recommend its use.

        NOTE
        ~~~~
        Please  note  that the commands above with a  '*'  following
        them,  when issued within AutoCAD, will override the  selec-
        tions  made  during TurboDLDClassic configuration,  for  the 
        current  drawing  session only. Exiting AutoCAD  and  subse-
        quently restarting will cause all feature settings to revert 
        back to those selected in the TurboDLDClassic  configuration 
        menu.  If  you wish to make the current  changes  permanent, 
        reconfigure TurboDLDClassic.


        Memory usage and lists
        ----------------------
        TurboDLDClassic shares extended memory with AutoCAD via  the 
        PharLap  Virtual Memory Manager. This means  that  TurboDLD-
        Classic  will automatically page to disk if it uses  up  all 
        the  RAM that AutoCAD has left for its use. See the  AutoCAD 
        'Installation and Performance Guide' for more information on 
        Virtual Memory Management. 

        NOTE
        ~~~~
        Please  note  that if you start seeing excessive  hard  disk
        accesses during PANs, REDRAWs, and ZOOMs while using AutoCAD 
        with  TurboDLDClassic, try using the DLDCOMPACT command.  If 
        this doesn't affect the amount of disk access it's  probably 
        time to add more memory to your system. Contact your AutoCAD 
        dealer for assistance in upgrading your memory.

        Regarding  display  list memory, it's important  to  realize
        that TurboDLDClassic speeds up AutoCAD operations by  creat-
        ing  a Display List in memory, and sending that list to  the 
        graphics  board for pans, zooms and redraws. But  a  display 
        list takes up memory.


                                                             Page 33

        How much memory?
        ----------------
        For production use, we recommend that at least 1 megabyte is 
        available for TurboDLDClassic. To determine how much  memory 
        AutoCAD  is using, use the status command while  in  AutoCAD 
        (refer  to the AutoCAD 'Installation and Performance  Guide' 
        for more information). The Display List for a simple drawing 
        like  the shuttle Columbia might only require 20 Kbytes  for 
        the  Display  List.  Complex drawings  may  require  several 
        megabytes.  We have seen Display Lists for a  drawing  range 
        from  one-tenth the size of the drawing file to three  times 
        the  size; in general, the Display List averages  about  the 
        same as the DWG file size. This means that you should  count 
        on the Display List generally taking up as much as twice the 
        DWG  file  size. Also, complex objects such as  circles  and
        text "expand" when translated into display list format, so a 
        drawing  with a lot of complex objects and text will have  a 
        larger Display List than a simpler drawing. 


        Keeping the Display List small
        ------------------------------
        Text  takes  up a disproportionate amount of  space  in  the 
        Display  List. To keep the list small, put text in  its  own 
        layer of the drawing. Then don't display the text layer when 
        editing  the rest of the figure. This will keep memory  con-
        sumption down and speed up PANs, REDRAWs, and ZOOMs.


        Read the AutoCAD manuals
        ------------------------
        The  AutoCAD manuals have an excellent section  on  perform-
        ance,  concentrating on memory usage. To get the  most  per-
        formance  out of the program, read the appropriate  sections 
        of those manuals as well as this one. 


        Tips and tricks
        ---------------

        Upgrading from older Panacea DLD drivers
        ----------------------------------------
        Be  sure  to  remove any reference to  previous  DLD  driver 
        commands (FASTACAD calls or SET parameters) or  sub-directo-
        ries  that  may be in your AUTOEXEC.BAT file or  in  AutoCAD 
        start-up  batch files. Such references could  cause  AutoCAD 
        and  TurboDLDClassic  to look in the wrong place  for  setup 
        information.

        If have been using a previous Panacea DLD driver and wish to
        use  the color palette you customized for it with  TurboDLD-



                                                             Page 34

        Classic, you may copy the DLDCOLOR.DAT file from your  older
        DLD's  sub-directory  to  the  sub-directory  you  specified 
        during the TurboDLDClassic installation process.


        Maneuvering Through AutoCAD
        ---------------------------

        Zooming
        -------
        When  zooming into an image, be aware of your  AutoCAD  grid 
        snap setting. If you are zoomed extremely far into a drawing 
        and you are having trouble moving your digitizer cursor, you 
        may  be snapping to a point which is not part of the  zoomed 
        viewport. If the cursor only moves to a single point, or  is 
        not on screen at all, turn the grid snap off.


        TurboDLDClassic and Paper Space
        -------------------------------
        TurboDLDClassic  features  do not work  in  AutoCAD's  Paper 
        Space. The execution of any TurboDLDClassic command in Paper 
        Space will result in an error message at the command prompt.


        Zoom Dynamic
        ------------
        We  do  not recommended using ANY  TurboDLDClassic  features
        while in the Zoom Dynamic mode of AutoCAD. Because TurboDLD-
        Classic cannot determine when Zoom Dynamic has been initiat-
        ed,  unpredictable results will occur. Use the  Big  Picture 
        feature  of TurboDLDClassic to accomplish the same  task  as 
        Zoom Dynamic, in a much more efficient fashion.


        Switching Color Modes
        ---------------------
        When  switching  color modes, (i.e. from 16 to 256  or  vice 
        versa) the DLDCOLOR command should be run in order to recon-
        figure your color palette for the number of colors selected. 
        A black cursor and disappearing crosshairs are both symptoms 
        of a color palette problem.


        AutoCAD R12's CONFIG command
        ----------------------------
        Configuring  TurboDLDClassic  in  the middle  of  a  drawing 
        session  using the CONFIG command is a bit like exiting  and 
        re-starting  AutoCAD. If are using the static  Big  Picture, 
        you  will have to re-initialize it after returning from  the 
        Configuration menu.



                                                             Page 35

        Sticky Cursors
        --------------
        Sometimes, when using the Big Picture, the digitizer  cursor 
        will appear to stick to the edge of the bird's-eye. This  is 
        normal and is the result of the digitizer puck responding to 
        the whole screen area while the Big Picture only occupies  a 
        small  portion of the screen. Because of the  difference  in 
        resolutions  between the screen and the digitizer, when  the 
        screen  cursor  enters the Big Picture area,  the  digitizer 
        puck  has more drawing area to cover in order to get to  the 
        same location as the screen cursor.


        Using AutoCAD Commands
        ----------------------
        Since  TurboDLDClassic is totally transparent to users  with 
        respect to using normal AutoCAD commands to REDRAW, PAN, and 
        ZOOM,  you still have to suffer from some of  AutoCAD's  nu-
        ances.  One of these nuances is that ZOOM ALL and  ZOOM  EX-
        TENTS  both  force a REGEN, because AutoCAD  does  not  keep 
        track  of various boundaries necessary to avoid the  REGENs. 
        And  REGENs  are  rather time-consuming and  don't  use  any 
        display  list  processing to speed themselves  up.  One  way 
        around this problem is to use another of AutoCAD's  built-in 
        features, namely the VIEW command.

        When you first load your image and see the whole drawing  on
        the  screen at once, just type VIEW Save  ALL[Enter],  which 
        will  save the display position you see under a  view  named 
        'All'.  Then,  after you've done some detailed  editing  and 
        want  to return back to the big picture, type  VIEW  Restore 
        ALL[Enter],    instead   of   ZOOM   All[Enter]   or    ZOOM 
        Extents[Enter], and the full drawing will be restored to the 
        display at display list speeds, without a REGEN.

        Another  nuance of AutoCAD's is that if you zoom in too  far
        or  pan over too far, you may inadvertently cause  a  REGEN. 
        AutoCAD again provides a very simple solution: the REGENAUTO 
        command.  Just  type  REGENAUTO Off[Enter]  at  the  AutoCAD 
        command  prompt, and automatic REGENs will be disabled.  The 
        REGENAUTO  setting  is also saved as part  of  your  drawing 
        file,  so you only need to execute it once per drawing.  You 
        may even want to set REGENAUTO off in your ACAD.DWG  drawing 
        template so that all your drawings are created with REGENAU-
        TO set off.


        Third-Party Software
        --------------------
        If  you are having trouble with TurboDLDClassic  and  third-
        party  AutoCAD  applications, be sure that  the  third-party 
        application  supports ADI 4.2. In order to use the  ADI  4.2 


                                                             Page 36

        specification, third-party applications require new  T-Driv-
        ers  and therefore must be revised. If an  application  does 
        not  specifically  say  that it is ADI  4.2  compatible,  it 
        probably is not. Check with the manufacturer to be sure.

        If  your third-party application is ADI 4.2  compatible  and
        you  are having trouble using TurboDLDClassic,  try  running 
        AutoCAD  without the third-party application to try to  iso-
        late the problem. Also, try the third-party application with 
        the  VESA compatible driver shipped with AutoCAD, this  will 
        also help to isolate the source of the problem.

        Also note that any third-party TSR that needs to access  the
        display  may not work properly when using AutoCAD  with  any 
        advanced ADI display driver, especially if the TSR  switches 
        graphics modes. Most TSRs will not support the same graphics 
        platforms as TurboDLDClassic and therefore, will not be able 
        to accommodate mode switching back and forth.


        Command summary
        ---------------
        This  section alphabetically lists the basic commands  found 
        in TurboDLDClassic. Commands have been listed  alphabetical-
        ly. 

        DLDBIGPIC    - calls up  the  Big  Picture  -  use digitizer
                       clicks to define an area and zoom into it.

        DLDBPCACHE   - enables or disables  the  Drawing  Cache  for
                       TurboDLDClassic advanced features.

        DLDBPDIM     - allows resizing and  repositioning of the Big
                       Picture.

        DLDBPFREEZE  - toggles  the  Big  Picture  Zoom Mode between
                       Float and Fixed modes.

        DLDBPHILIGHT - selects  the  highlight  mode used to display
                       the Big Picture.

        DLDBPREFRSH  - enables  and   Disables   the   Big   Picture
                       automatic update mode.

        DLDBPSTATIC  - toggles the Big Picture to stay on the screen
                       at all times.

        DLDCOLOR     - invokes   CustomColorsTM,   Panacea's   color
                       configuration program.

        DLDCOMPACT   - forces  a  manual  clean-up  of  Display List
                       memory returning  any  unused  memory back to
                       the AutoCAD memory pool.

                                                             Page 37

        DLDDCACHE    - toggles  the TurboDLDClassic drawing cache on
                       and off.

        DLDDLIST     - toggles   the   display   list   function  of
                       TurboDLDClassic on and off.

        DLDECHO      - toggles   internal   TurboDLDClassic  command
                       echoing at the AutoCAD command line.

        DLDHELP      - provides  a list of TurboDLDClassic  commands
                       with  one-line  description  of  each, within
                       AutoCAD.  It's  recommended  that you flip to
                       the text screen to view the output.

        DLDREFRESH   - refreshes the Big Picture to reflect the most
                       current changes to a drawing.

        DLDSTAT      - displays    a   listing   of   the    current
                       TurboDLDClassic parameters.  A  flip  to  the
                       graphics   screen  is  recommended  for  this
                       command.

        DLDUSAGE     - gives  a  to-the-byte breakdown of how memory
                       is being used for display list processing.

        DLDVER       - displays  the TurboDLDClassic version, serial
                       number  and  registered  user's  name  at the
                       AutoCAD command line.

        DLDVISREGEN  - toggles  between  the  Fast and Visible Regen
                       modes of TurboDLDClassic.


                                                             Page 38

        GEM/3
        -----

        Installing GEM/3 display drivers
        --------------------------------
        To install the GEM drivers the first step is to build a  GEM 
        driver pak. 

        [] In  the following three steps, you create a disk known as
           the GEM DRIVER PAK. Using the standard DOS FORMA utility,
           format a blank diskette by inserting it in  drive  A  and
           typing the following:

                        FORMAT A: /V [Enter]

           The  DOS  format  utility will then prompt for the volume
           label by displaying:

            Volume Label? (11 characters max) Press Enter for none.

           At this prompt, type the following volume-label  name  in
           upper case:

                        GEM DRIVRPK [Enter]

        [] Using the DOS COPY utility, copy the following files from
           the  GEM/3  system  master diskette (comes with GEM/3) to
           the   newly   formatted  GEM  DRIVRPK diskette. Type  the
           following  sample commands assuming that the GEM/3 system
           master  diskette  is  in  drive A:  and  the  GEM DRIVRPK
           diskette is in drive B:

                        COPY A:GEMVDI.EXE B: [Enter]
                        COPY A:MDGEM?.SYS B: [Enter]

        [] Insert  the  Cirrus Logic drivers diskette into Drive A:.
           Run the Cirrus Logic installation program  (INSTALL.EXE),
           and choose the option for the GEM/3 drivers  and  specify
           the drive  and  directory  where  you want them copied to
           (such  as B:\).  GEM/3  requires   that  the  drivers  be
           installed from  the  root  directory of a floppy  disk in
           drive A:.  Be  sure to install the drivers to the root of
           drive A: or drive B: and then place the diskette in drive
           A: before proceeding.

        [] Install GEM/3 (following the instructions provided in the
           product's   manual),   selecting  the  standard  IBM  VGA
           Color (IBMPS/2) driver.

        [] After  successfully  completing  installation, insert the
           GEM/3 System Master Disk in drive A.



                                                             Page 39

        [] Move to drive A by typing A:[Enter]. Please note that you
           must install from the A: drive.

        [] Then type GEMSETUP[Enter].

           Follow  the  GEM/3  installation  instructions up  to the
           CHANGE EXISTING CONFIGURATION stage. When prompted for  a
           screen driver choice, highlight:

                        OTHER (DRIVER PACK)

        [] When  prompted to  insert  a  screen driver into drive A,
           insert the newly created GEM DRIVRPK diskette.

        [] Select one of the following:

                Cirrus Logic VGA 16 Color 800x600
                Cirrus Logic VGA 16 Color 1024x768

        [] Continue with the remainder of the installation.


                                                             Page 40

        Lotus 123 v2.x, Symphony, and Report Writer
        -------------------------------------------
        To install a Lotus display driver, proceed as follows:

        [] Run  the Cirrus Logic installation program (INSTALL.EXE),
           and choose  the  option  for  the  Lotus 123 and Symphony
           drivers  and  specify  the  drive and directory where you
           want them  copied to (such as C:\LOTUS).

        [] From within the Lotus sub-directory type:

                        INSTALL [Enter]

        [] From the next menu, select Advanced Options for Lotus 123
           v2.2 or Change Selected Equipment for Lotus 123 v2.3.

        [] For  v2.2,  select  Add  New Drivers to Library and go to
           step 3. For v2.3, select Modify Current Driver Set and go
           to step 6.

        [] From the next menu, select Modify Current Driver Set.

        [] From  the  next  menu,  select  one  of  the  display and
           resolution configurations.

        [] From the next menu, select Return To Menu.

        [] From the next menu, select Save Changes.

        [] Enter the name you have selected for the  driver  set. We
           recommend that the driver set name reflect or include the
           driver's  resolution  (e.g. 132x43)  NOTE:   The  default
           driver set name assigned by the program is 123.SET.

        You  may create multiple driver sets with different  display
        resolutions. To run Lotus 1-2-3 or Symphony with a  specific 
        driver set, type: 

                        123 SETNAME [Enter] or
                        SYMPHONY SETNAME [Enter]

        where SETNAME is the name of the desired driver set.


        Lotus 123 v3.X
        --------------
        To  install  a Lotus 3.0 or 3.1 display driver,  proceed  as 
        follows:

        [] It is  assumed  that  Lotus  1-2-3 v3.0 or 3.1 is already
           installed  on  your  hard  disk, using the standard Lotus
           installation  utility.  To  install this driver, make the
           directory  containing  1-2-3  v3.0 the current directory.

                                                             Page 41

           For example,  if  1-2-3  is in the directory named 123R3,
           then type the following command:

                        CD \123R3[Enter]

        [] One of the files used in the driver installation is named
           INSTALL.DDF.  This  is  a  text  file  used  by the 1-2-3
           installation utility,  containing  information on each of
           the  drivers  and  modes  of  operation. If you have been
           using  a  driver  supplied with another graphics adapter,
           you  may  want  to  make a backup copy of the INSTALL.DDF
           file currently in your 1-2-3 directory.

                        COPY INSTALL.DDF INSTALL.BAK [Enter]

        [] Run the Cirrus Logic  installation program (INSTALL.EXE),
           and choose  the  option for the version of Lotus 123 that
           you  are using and  specify the drive and directory where
           you   want  them  copied  to  (such  as C:\123R3). If the
           INSTALL.DDF has been copied to a backup file  (see step 2
           above),  answer  YES to the prompt to confirm overwriting
           the file.

        [] Now run the Lotus installation utility by typing:

                        INSTALL[Enter]

        [] Select Change  selected equipment from the list. Note: If
           you  are  currently  using another driver supplied with a
           graphics board, it may be necessary to choose  First-time
           installation.

        [] Select  Modify  Current  DCF,  or  Choose  another DCF to
           modify,  according  to  your  preference.  The  following
           procedure is valid for either selection.

        [] Select Change Video Display. This will present you with a
           list  of  all the display  types  provided with the 1-2-3
           distribution,  with  two  additional  choices.  GD542x100
           Column  Display  (800x600  resolution)  supports  100x31,
           100x42,  and  100x75  16  color  modes. GD542x128  Column
           Display  (1024x768 resolution)  supports  128x40, 128x54,
           and 128x96 16 color  modes. Select a resolution that best
           meets your requirements.

        [] After  you  selection  is  made,  choose the Save Changes
           option from the menu. Note that when some high-resolution
           modes are  selected, a  message may appear asking for the
           drive letter  of  the  floppy  disk.  Before entering the
           drive letter,  insert  the  disk that is requested in the
           floppy drive. After inserting the disk, you may enter the
           drive letter  containing that diskette.


                                                             Page 42

        OS/2 2.0
        --------

        16 Color Drivers
        ----------------
        This installation guide assumes the user to be familiar with 
        the  mouse interface of the OS/2 2.0 Desktop Shell  environ-
        ment. If additional instructions are needed, please  consult 
        the OS/2 Tutorial in the Information folder.

        To install OS/2 2.0 PM Display Driver

        [] Save  a  copy of the DISPLAY.DLL in \OS2\DLL.

           If you are currently running OS/2 2.0, open a DOS session
           by  double  clicking  on  a DOS Full Screen icon from the
           OS/2 Command Prompts folder.  The Command Prompts icon is
           in the OS/2 System folder. Move to the \OS2\DLL directory
           by typing at the DOS prompt CD \OS2\DLL[Enter].

           Type  COPY  DISPLAY.DLL  IBMVGA.DLL /B[Enter]  at the DOS
           prompt to make a backup copy of DISPLAY.DLL.

           If  you  are  currently  running MS-DOS, follow the above
           steps  for  a  DOS  session  to make a backup copy of the
           DISPLAY.DLL.

           Return to the  root directory by typing  CD\ [Enter]  and
           create a subdirectory in your OS/2 drive.

           If you intend to install the 16 color drivers: At the DOS
           prompt type md CL16DRV [Enter].  Type  C:\OS/2\BOOT  OS/2
           [Enter]to boot OS/2 to continue with the installation.

        [] Invoke OS/2's Device Driver Install utility  form  System
           Setup in  the  System  Folder.  This will copy the device
           drivers from  the  Driver and Utilities for OS/2 diskette
           to the hard disk.

           Insert the Drivers and Utilities for  OS/2 diskette  into
           drive A:.

           Double  click  on  the  Device Driver Install icon in the
           System Setup folder.  System  Setup is in the OS/2 System
           folder.
        
           Click  on  the  Install  button  from the OS/2 2.0 Device
           Driver  Installation  pop up window.  The  Select  Device
           Drivers  pop  up  window  will  display  a list of device
           drivers such as:




                                                             Page 43

           Super VGA - 640x480x16, at 72 Hz vertical scan frequency
           Super VGA - 800x600x16, at 56 Hz vertical scan frequency
           Super VGA - 800x600x16, at 60 Hz vertical scan frequency
           Super VGA - 800x600x16, at 72 Hz vertical scan frequency
           Super VGA - 1024x768x16 interlaced, at 43.5 Hz vertical
                       scan frequency
           Super VGA - 1024x768x16, at 60 Hz vertical scan frequency
           Super VGA - 1024x768x16, at 70 Hz vertical scan frequency
           Super VGA - 1024x768x16, at 72 Hz vertical scan frequency
                       (check if monitor and adaptor supports freq)

           To  assist  in determining what capabilities your monitor
           has, refer to table  2  in  the  Clmode  section  of this
           manual. Select the device driver to be installed from the
           list  and  click  on  the  OK  button. Device drivers are
           copied to their corresponding directories.

           Click  on  the  Exit  button, then the Yes button. If the
           current  DISPLAY.DLL is in use, a dialog box will pop  up
           to notify  the user that changes will be in effect on the
           next reboot. Click the OK button to exit the installation
           utility.

        [] Modify the CONFIG.SYS file in the root directory so  that
           OS/2  will install the correct device driver on the  next
           reboot.

           Click  on  the  OS/2  System   Editor   icon   from   the
           Productivity  folder  which  resides  in  the OS/2 System
           folder.

           Once in the OS/2 System Editor, click on  File  Open  and
           select CONFIG.SYS in the File box. If CONFIG.SYS  is  not
           displayed, type in the correct path and file  name in the
           Filename box (i.e., C:\CONFIG.SYS). Click on OK.

           Search  for  the  command line which contains the library
           path and add the following  subdirectory to the beginning
           of the path statement.

                For example, LIBPATH=C:\CL16DRV; . ; .......
        
           Select Open from the File menu. Open CONFIG.SYS from  the
           root directory.

           Search for the command line which contains vvga.sys.  For
           example,

                DEVICE=C:\OS2\MDOS\VVGA.SYS.

           Select Find from the Edit menu.

           Type VVGA.SYS in the Find: edit box.

                                                             Page 44

        Uncheck the Case Sensitive option if it is checked.

        Click on the Wrap option so that a tick mark appears in  the
        check box.

        Click on the Find button.

        Once the command line is located, select the Cancel button.

        Highlight the command line with the mouse, then select  Copy
        from the Edit menu.

        Click at the end of the command line, press the [Enter]  key
        to insert a new line below the current command line.

        Select  Paste  from  the  Edit  menu  to  make a copy of the
        command line.

        Type REM at the beginning of the original command line.

        Change VVGA.SYS in the pasted command line to CLVSVGA.SYS.

        Select Save from the File menu and save the changes.

        Double click on the SYSTEM icon to exit the editor. Shutdown
        the system and reboot for the changes to take effect.


        32 Bit 256 Color Drivers
        ------------------------
        This  installation guide assumes the user has installed  the 
        Corrective Service Pack provided by IBM. 

        Also,  this installation assumes the user is  familiar  with
        the  mouse interface of the OS/2 2.0 Desktop Shell  environ-
        ment. If additional instructions are needed, please  consult 
        the OS/2 Tutorial in the Information folder.

        To install an OS/2 2.0 PM Display Driver

        [] Save a copy of the DISPLAY.DLL in \OS2\DLL.

           If you are currently running OS/2 2.0, open a DOS session
           by double  clicking  on a DOS Full Screen icon  from  the
           OS/2 Command  Prompts folder. The Command Prompts icon is
           in the OS/2 System folder. Move to the \OS2\DLL directory
           by typing at the DOS  prompt CD \OS2\DLL[Enter].

           Type  COPY  DISPLAY.DLL  IBMVGA.DLL  /B[Enter] at the DOS
           prompt to make a backup copy of DISPLAY.DLL.




                                                             Page 45

           If  you  are  currently  running MS-DOS, follow the above
           steps  for  a  DOS  session  to make a backup copy of the
           DISPLAY.DLL.

           Return to the root directory by typing  CD\  [Enter]  and
           create a subdirectory in your OS/2 drive.

           If you intend to install the 256 color drivers:

                Type at DOS prompt> md CL32DRV [Enter].

           Boot OS/2 to continue with the installation.

        [] Invoke  OS/2's  Device  Driver  Install  utility  to copy
           device drivers from  the  Driver  and  Utilities for OS/2
           diskette to the hard disk.

           Insert  the  Drivers  and  Utilities for OS/2 diskette in
           drive A:.

           Double  click  on  the  Device Driver Install icon in the
           System Setup folder. The System Setup icon is in the OS/2
           System folder.

           Click  on  the  Install  button  from the OS/2 2.0 Device
           Driver Installation  pop  up  window.  The  Select Device
           Drivers  pop  up  window will  display  a  list of device
           drivers such as:

          Super VGA - 640x480x256, at 60 Hz vertical scan frequency
          Super VGA - 640x480x256, at 72 Hz vertical scan frequency
          Super VGA - 800x600x256, at 56 Hz vertical scan frequency
          Super VGA - 800x600x256, at 60 Hz vertical scan frequency
          Super VGA - 800x600x256, at 72 Hz vertical scan frequency
          Super VGA - 1024x768x256, interlaced, at 43.5 Hz vertical
                      scan frequency
          Super VGA - 1024x768x256, at 60 Hz vertical scan frequency
          Super VGA - 1024x768x256, at 70 Hz vertical scan frequency
          Super VGA - 1024x768x256, at 72 Hz vertical scan frequency
                      (check if monitor and adaptor supports freq)

           To  assist in determining what capabilities your  monitor
           has,  refer  to  table  2  in  the Clmode section of this
           manual. Select the device driver to be installed from the
           list and  lick  on  the  OK  button.  Device  drivers are
           copied to  their corresponding directories.

           Click  on  the  Exit  button, then the Yes button. If the
           current  DISPLAY.DLL is in use, a dialog box will pop  up
           to notify  the user that changes will be in effect on the
           next reboot. Click the OK button to exit the installation
           utility.


                                                             Page 46

        [] Modify the CONFIG.SYS file in the root directory  so that
           OS/2 will install the correct device driver  on  the next
           reboot.

           Click  on   the  OS/2   System   Editor  icon  from   the
           Productivity  folder  which  resides  in  the OS/2 System
           folder.

           Select Open from the File menu. Open CONFIG.SYS from  the
           root directory.

           Search  for  the  command line which contains the library
           path and  add the following subdirectory at the beginning
           of the path statement: For example,

                        LIBPATH=C:\CL32DRV; . ; .......

           Search for the command line which contains  vvga.sys. For
           example,

                        DEVICE=C:\OS2\MDOS\VVGA.SYS.

           Select Find from the Edit menu.

           Type VVGA.SYS in the Find: edit box.

           Uncheck the Case Sensitive option if it is checked.

           Click  on  the Wrap option so that a tick mark appears in
           the check box.

           Click on the Find button.

           Once  the  command  line  is  located,  select the Cancel
           button.

           Highlight  the  command  line with the mouse, then select
           Copy from the Edit menu.

           Click  at  the end of the command line, press the [Enter]
           key to insert a new line below the current command line.

           Select  Paste  from  the  Edit menu to make a copy of the
           command line.

           Type REM at the beginning of the original command line.

           Change   VVGA.SYS   in   the   pasted  command   line  to
           CLVSVGA.SYS.

           Select Save from the File menu and save the changes.

           Double click  on  the  SYSTEM  icon  to  exit the editor.

                                                             Page 47

           Shutdown  the  system  and reboot for the changes to take
           effect.


        To install Windows 3.0 drivers for OS/2 2.0:
        --------------------------------------------
        This  section  assumes that the WIN-OS/2  Support  has  been 
        installed.  If  that  option has not been  selected  at  the 
        initial OS/2 installation, please use the Selective  Install 
        utility that is in the System Setup folder to first  install 
        WIN-OS/2 Support.

        [] If you do not currently have a WIN-OS/2  session running,
           start one.

           Open a WIN-OS/2 session by double clicking on a  WIN-OS/2
           icon from the OS/2 Command Prompts  folder.  The  Command
           Prompts icon is in the OS/2 System folder.

        [] Run the Install program to copy the WIN-OS/2  Drivers and
           SetRES Utility to the hard disk.

           In the Program Manager, choose File Run.

           Specify   the   diskette  drive   where  the  Drivers and
           Utilities  for OS/2  Diskette  is  inserted,  and run the
           install program.

                        A:\INSTALL[Enter]

        [] When prompted,  specify  to  copy  the   files   to   the
           \OS2\MDOS\WINOS2 directory.

        [] The resolution  may now be selected by running the SetRes
           Utility. Execute SetRES by double clicking on the  SetRES
           icon. Use the SetRes utility to select either 16  or  256
           colors  and  the  desired  resolution for future Win-OS/2
           sessions.

           For help  on  the  SetRes  utility,  select Help from the
           program menu.


                                                             Page 48
        Ventura Publisher
        -----------------

        Installing Ventura Publisher display drivers
        --------------------------------------------

        To install the Ventura Publisher driver, proceed as follows:

        [] Install  Ventura Publisher   V2.0  as  instructed in  the
           product's manual, specifying the Hercules driver.

        [] Insert  the  Cirrus Logic drivers diskette into Drive B:.
           Run the Cirrus Logic installation program  (INSTALL.EXE),
           and choose the option for the Ventura  Publisher  drivers
           and  specify  the drive and directory where you want them
           copied to (such as A:\).  Ventura Publisher requires that
           the  drivers  be  installed  from the root directory of a
           floppy disk in drive A:.  Be  sure to install the drivers
           to the  root  of  drive A: or drive B: and then place the
           diskette in drive A: before proceeding.

        [] Change to drive A: by typing A:[Enter].

           After the A: prompt appears, run the VPDRV2_0.EXE program
           by  typing  VPDRV2_0[Enter].  Note  that VPDRV2_0.EXE can
           only be executed from the A: drive.

           Follow  the  step-by-step  installation  procedure  as it
           appears on  the  screen  and  select one of the following
           drivers  when  prompted:

                Cirrus Logic VGA 800x600 16 of 256K colors or greys.
                Cirrus Logic VGA 1024x768 16 of 256K colors or greys.

        Ventura  Publisher V2.0 is now configured for  the  selected
        screen resolution and 16 color graphics.


                                                             Page 49

        Microsoft Word
        --------------
        The  high resolution Microsoft Word 5.0 display driver  sup-
        plied with your Cirrus Logic VGA supports both high  resolu-
        tion  text and graphics. When using a Microsoft  Mouse  with 
        the  driver,  please ensure that your mouse  driver  version 
        level is 7.0 or above.


        Installing Word display drivers
        -------------------------------
        To  install  the Word high resolution text  driver  supplied 
        with your Cirrus Logic VGA, follow these instructions:

        [] If  you  have not already done so, install Microsoft Word
           onto   your  computer  system.  Follow  the  instructions
           supplied with Word. When asked for a screen display type,
           choose IBM Video Graphics Array (VGA).

        [] Run the  Cirrus Logic installation program (INSTALL.EXE),
           and  choose the option for the Microsoft Word drivers and
           specify  the  drive  and  directory  where  you want them
           copied to  (such as C:\WORD5).

        NOTE
        ~~~~
        To  use  the new drivers they must be installed to the  same
        directory as Word. Otherwise, they must  be  copied  to  the
        Word directory before they can be used.

        [] INSTALL.EXE will copy two screen drivers:

                SCREEN8.VID for 800x600 graphics resolution
                SCREEN.VID - for 1024 x768 graphics resolution

           The  driver to  be  used must be named SCREEN.VID. When a
           file  is  renamed  this, it will overwrite  the  existing
           display driver.  If you wish to preserve the original, it
           should  be renamed or copied prior to installation of the
           new drivers.

        [] The  new driver is now installed, and to use it, run Word
           as  you  normally would.  To  view and change the  screen
           resolutions,  select  Options, move the cursor to display
           mode,  and  press  [F1].  Choose   the   desired   screen
           resolution from the list presented.

        [] A  sub-menu  will  appear,  listing  all  the  choices of
           resolutions supported  by  the  Cirrus Logic text driver.
           Select  the desired resolution.


                                                             Page 50
        WordPerfect 5.1, 6.0
        --------------------

        WordPerfect 6.0
        ---------------
        To  use high resolution modes with WordPerfect 6.0,  install 
        the  VESA driver that comes with WordPerfect  and  configure 
        the program to use one of the VESA high resolution  graphics 
        modes.


        Wordperfect 5.1
        ---------------
        The high resolution WordPerfect version 5.1 driver  supplied 
        with  your  Cirrus Logic VGA supports both  high  resolution 
        text  and  graphics. WordPerfect allows  graphics  and  text 
        drivers to be set up separately, so be sure to install  both 
        of these drivers.


        Installing WordPerfect 5.1 display drivers
        ------------------------------------------
        To  install  the  WordPerfect high  resolution  text  driver 
        supplied  with your Cirrus Logic VGA, follow these  instruc-
        tions:

        [] If you have not already done so, install WordPerfect onto
           your  computer  system.  Follow the instructions supplied
           with WordPerfect.

        [] Run  the Cirrus Logic installation program (INSTALL.EXE),
           and choose  the  option  for the WordPerfect drivers  and
           specify  the  drive  and  directory  where  you want them
           copied to  (such as C:\WP51).

        [] Start   WordPerfect,   and   go   into   SETUP  by typing
           [Shift-F1].

        [] Choose  Display  [2],  then  text screen type by pressing
           [3].

        [] Move the cursor to where GD542X appears on the  list, and
           choose SELECT.

        [] A  sub-menu  will  appear,  listing  all  the  choices of
           resolutions supported  by  the  Cirrus Logic text driver.
           Select  the  desired resolution.








                                                             Page 51

        To  install the WordPerfect high resolution graphics  driver
        supplied   with   your  Cirrus   Logic   VGA,  follow  these
        instructions:
        ------------------------------------------------------------
        [] If you have not already done so, install WordPerfect onto
           your  computer  system.  Follow the instructions supplied
           with WordPerfect.

        [] Run  the Cirrus Logic installation program (INSTALL.EXE),
           and choose  the  option  for the WordPerfect drivers  and
           specify  the  drive  and  directory  where  you want them
           copied to  (such as C:\WP51).

        [] Start   WordPerfect,   and   go   into  SETUP  by  typing
           [Shift-F1].

        [] Choose Display [2], then graphics screen type by pressing
           [2].

        [] Move the cursor to where Cirrus Logic VGA appears on  the
           list, and choose SELECT.

        [] A  sub-menu  will  appear,  listing  all  the  choices of
           resolutions   supported  by  the  Cirrus  Logic  graphics
           driver.  Select the desired resolution.


                                                             Page 52

        WordStar
        --------
        The  WordStar display drivers support both WordStar  version 
        5.5 and 6.0 and above and WordStar 2000 version 3.5.


        Installing WordStar drivers
        ---------------------------
        To install the WordStar high resolution text driver supplied 
        with your Cirrus Logic VGA, follow these instructions:

        [] If  you  have  not already done so, install WordStar onto
           your computer system. Follow  the  instructions  supplied
           with WordStar.

        [] Run the  Cirrus Logic installation program (INSTALL.EXE),
           and  choose  the  option  for  the  WordStar  drivers and
           specify  the  drive  and  directory  where  you want them
           copied to (such  as  C:\WS).

        [] Using a  text  editor  enter  the  file FONTID.CTL in the
           WordStar directory and change the CRT_TYPE line to read:

                        CRT_TYPE=CL800.WGD

        [] When  WordStar  is  executed,  the display driver will be
           used for page preview mode.


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