First post, by Jed118
- Rank
- Oldbie
Hello all,
I've recently been tinkering with a 486 and it has an OPTI931 sound card (which won't work in WIN3.1) with an IDE CDROM connection.
Lastdrive=z in all cases.
Documentation about CDSETUP.SYS comes from the 486's help/config files, and is somewhat expanded upon here:
http://ftp.serdica.org/public/drivers/Sound/O … 3w95/README.TXT
I've used mscdex.exe extensively when I was younger, even on the proprietary 2x CR 56x Panasonic drives.
From a working 386 I have kicking around with a 2x CDRROM, the CONFIG.SYS line looks like this:
DEVICEHIGH=C:\SB16\CDMKE.SYS /D:MSCD000 /SBP:220 /Q
The MSCDEX redirector entry looks like this in AUTOEXEC.BAT:
C:\DOS\MSCDEX.EXE /D:MSCD000 /V /M:12
This is for the proprietary 2x Panasonic drive, but it makes sense - Config sets the device /D:MSCD000 and then Autoexec redirects the driver via MSCDEX.EXE and you get a drive letter.
Moving onto the 486 with an IDE drive, CONFIG.SYS line looks like this:
DEVICE=C:\OPTI931\CDSETUP.SYS /T:I /P:376,170 /I:f
When this line is executed (it takes a good 20 seconds of staring at Starting MS-DOS: Slowest driver, ever) I am greeted with "CDROM Driver loaded successfully", and continues to boot, configuring the sound card, himem.sys, etc.
Here's where the confusion starts - What is the actual driver loaded here? It doesn't seem to have /D: designation anywhere, so what does MSCDEX.EXE actually call? Indeed, the only lines relating to the soundboard in autoexec.bat are C:\OPTI931\SNDTUNE and C:\OPTI931\SNDINIT /b
I tried starting MSCDEX manually but no matter what I put in there, I get No valid CDROM device drivers selected.
My question is, what is the name of the bloody CDROM device driver that OPTI supplies, and how do I get a drive letter?
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