I use a LPT plug with about 20 resistors soldered together so i guess it is a Speech Thing
This site http://www.popuw.com/problems.html
Command line arguments to prince.exe
vga, mcga -> use mcga graphics mode (320*200, 256 colours, vga controller required)
tga -> use tandy graphics (320*200, 16 colours, on tandy machines)
ega -> use ega graphics (320*200, 16 colours, ega or vga controller required)
hga, herc -> use hercules (720*348 [prince uses only 640*200], monochrome, hercules controller)
cga -> use cga (320*200, 4 colours, cga/ega/tandy/vga required)
stdsnd -> Standard PC Internal Speaker
adlib -> Ad Lib card
covox -> Covox Sound Master device
gblast -> Creative Labs Game Blaster
ibmg -> IBM Music Feature Card (?)
sblast -> Sound Blaster / Sound Blaster Pro or compatible
tandy -> Tandy computers with digital sound support / 3-voice music support
(descriptions are from v1.3's setup.exe, some tweaking was required)
bypass -> continue loading even if there isn't enough memory
megahit (in version 1.0) -> enable cheats
improved (in version 1.3 and 1.4) -> enable cheats
draw -> don't buffer screen output (only if cheats enabled)
%d (substitute level number) -> start with selected level (only if cheats enabled)
pack -> store bitmaps compressed (in memory)
unpack -> store bitmaps uncompressed (in memory)
j -> for joystick mode
But i think they are only guessing the meanig of parameters.
I guess we won't know it without the possibility to check with a real card, or with original manual where it was explained.
So has anyone got original manual for Prince of Persia 1 v.1.0?
Great Hierophant: you can at least check pop1 v1.0 with your ibm music feature card to determine whether ibmg parameter is for this card
Oh, and have you got Disney Sound Source or Covox Speech Thing (you said you have one of these but didn't say which one) so you could check that too
Also PoP1 v1.3 setup has "PS/1 (audio/games) Option Card" and PoP2 setup has "IBM PS/1" and both don't have ibm music feature card so i guess ibmg parameter is for IBMgames.
Also PoP1 v1.3 setup and PoP2 setup have Disney Sound Source and don't have Covox Sound Master so I guess covox parameter is for Covox Speech Thing. But this is only guessing.