Steves XP Legacy Games Corner
Steve's XP Games Corner - The Pandora Directive in VDMSound
By Steve Metzler (Last updated: 27th May, 2006)

This is one of my all time favourite adventures, so I was delighted to get it running in XP. Like Gabriel Knight, Pandora Directive has both DOS and Windows installation options. But this time we go for the DOS approach using VDMSound. Many thanks to WireKnight on VOGONS for this:

  1. Insert Pandora Directive CD 1, then start up a Command Prompt via: 'Start' -> 'All Programs' -> 'Accessories' -> 'Command Prompt'
  2. At the Command Prompt, type in the letter of your CD-ROM (usually d or e), followed by a colon like this: d: then hit ENTER to switch to that drive. Then type: install and hit ENTER again to begin the installation process. I recommend installing to the default folder, C:\PANDORA
  3. Next we have to perform a little configuration file magic. Use Notepad (or whatever your favourite text editor happens to be) to replace the following section in c:\pandora\SOUND.INF with the data shown below (basically, we're telling Pandora not to auto-detect any sound hardware):
    1)  Sound Blaster 1.0                               = 0xe000,0,1,1
    2)  Sound Blaster Pro                               = 0xe001,1,2,1
    3)  Sound Blaster 16                                = 0xe018,3,3,1
    4)  Sound Blaster AWE32                             = 0xe018,3,5,1
    5)  Microsoft Sound System {Microsoft Sound Sys}    = 0xe00e,3,6,1
    6)  Ensoniq Soundscape                              = 0xe020,3,7,1
    7)  Pro AudioSpectrum                               = 0xe005,1,8,1
    8)  Pro AudioSpectrum 16 {Pro AudioSpect 16}        = 0xe006,3,9,1
    9)  Adlib Gold                                      = 0xe008,3,11,1
    10) ESS AudioDrive                                  = 0xe01c,3,18,1
    11) Gravis Ultrasound                               = 0xe025,2,19,1
    12) Gravis Ultrasound Max                           = 0xe029,2,20,1
    13) Roland RAP-10                                   = 0xe022,2,17,1
    14) Sound Galaxy Nova16                             = 0xe00e,3,21,1
    15)  SB 1.0 (No Verify)                             = 0xe000,0,1,1,1
    16)  SB Pro (No Verify)                             = 0xe001,1,2,1,1
  4. Now we attack c:\pandora\DEFAULT.INI in a similar manner, replacing the first 3 sections with the data below (Note: I had originally got this game working with a SoundBlaster 1.0 configuration, but subsequent experimentation has shown that the sound quality is much better if you set it up as a SoundBlaster Pro using the data below):
  5. Copy the VDMS.INI file from wherever you installed VDMSound (usually, c:\Program Files\VDMSound) to c:\pandora. Replace the following section in c:\pandora\VDMS.INI with the data shown below:
    [SB Controller.config]
    version = 3.02  ; 1.05 SB1.x, 2.01 SB2, 3.02 SBPro, 4.05 SB16
    port    = 0x220 ; usually 0x220 (or: 210, 230, 240, 250, 260, 280)
    IRQ     = 5     ; usually 5 or 7
    DMA8    = 1     ; usually 1
    DMA16   = 5     ; usually 5
  6. We're now almost ready to run Pandora. From the Command Prompt, switch to the c:\pandora folder by entering: cd \pandora. Then install the VDMSound drivers by entering:

    dosdrv -i:c:\pandora\vdms.ini

    Now the game will actually run, but the 'Control Panel' will come up verrry slowly, and the cursor movement will be sluggish as well. Incredibly, this behaviour can be remedied by changing a single instruction in the file c:\pandora\TEX4.EXE. Now... there are instructions below for doing this if you happen to be a whiz at hex editing. BUT, beware that there are several slightly different versions of Pandora Directive out there, depending on when the CDs were cut and if the game was part of a compilation, etc. So... I have made my patched version available here. I would recommend saving off your original c:\pandora\TEX4.EXE file before unzipping this one, just in case you want to revert to the original without having to re-install the whole game. If you download and unzip this patched file, you can skip to the next step...

    ...but if you do decide to have a go at the file yourself, you will need a hex editor. I unreservedly recommend Ultra Edit, which I've been using to fulfil all of my professional editing needs for about 3 years now. It's shareware, but please do the author a favour and send him $40 to register your copy. Well worth it. Using a hex editor, open c:\pandora\TEX4.EXE, then navigate to the following area, which initially looks like this:
    000bfae0h: 04 00 00 9C FA 66 A1 86 ...
    Over-write the 'FA' (CLI instruction) at 000bfae4h with a '90' (NOP instruction). Once you've done that, the area should look like this:
    000bfae0h: 04 00 00 9C 90 66 A1 86 ...
    Then save the modified file.
  7. Finally, we're ready to start up Pandora. At the Command Prompt, enter: tex4.exe and we're away!

Once up and running, there are a few things you need to be aware of:

  1. Maximum enjoyment is to be had by running Pandora in full screen mode. Set this option in-game via: 'CONFIG' -> 'PREFERENCES' -> 'MOVEMENT MODE/Window Size' -> '640 x 480 [7]'
  2. VERY IMPORTANT: due to an exiting bug, Pandora will not run twice in a row from the same Command Prompt. So between runs you need to: close down the existing Command Prompt, open up a new one, switch to the Pandora folder (cd \pandora) and install VDMSound again:

    dosdrv -i:c:\pandora\vdms.ini

    Then you can run TEX4.EXE again!

Copyright © Steve Metzler 2003. All rights reserved.

See also the Help! page for links to additional help in getting games to run.