VOGONS


First post, by Syntho

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When I boot into W95, then ‘restart’ in DOS mode from the Start menu, a typical setting of this:

Port: 220
IRQ: 5
DMA: 1

Is present and all my games work fine when launching from the DOS prompt. Or from within W95 too. BUT! When I boot directly into DOS 6.22 on the same machine, music works fine, but digital Sound FX won’t work. Curious, I went into the Descent game’s folder and ran its SETUP.EXE because it has a neat auto-detect sound card thing. When booting from DOS, it says:

Port:220
IRQ: 10
DMA: 0

I installed some SB driver packs in DOS and used the DIAGNOSE.EXE program to add a line to my AUTOEXEC.BAT file which now reads:

SET BLASTER=A220 I5 D1 H5 P330 T6

But it hasn’t helped the problem.

I’m thinking there’s either manual jumpers on my card, or my BIOS has some setting somewhere that needs changing. I have Plug And Play Aware O/S turned off. There’s also PCI IRQ Priority Auto Setting set to Yes. If I switch that to No, I can alter 1st Available IRQ, 2nd Available IRQ, etc, but haven’t fooled with that yet.

What’s going on?

Reply 1 of 5, by NeoG_

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Syntho wrote on Today, 06:20:

I have Plug And Play Aware O/S turned off.

In the BIOS turn 'Plug And Play Aware O/S' on, and go to the resource assignment setting and set IRQ 5 and DMA 1 to 'Legacy ISA'

Inside windows, the card will now be on a different IRQ and DMA, use manual resource configuration and override it back to IRQ 5, DMA 1

In DOS, depending on which exact sound card model you have (would be good to tell us to help troubleshoot), you will then need to initialise the card to Address 220, IRQ 5, DMA 1 (for example using CTCU/CTCM or Unisound)
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Reply 2 of 5, by Grzyb

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Is there "DIAGNOSE" after "SET BLASTER=A220 I5 D1 H5 P330 T6" ?

If DIAGNOSE is running, but fails to set the card to the expected values, try replacing DIAGNOSE with UNISOUND.

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Reply 3 of 5, by Syntho

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There’s no place to alter the resource assignments in my BIOS. It’s an American Megatrends from 1996, with a GUI/mouse.

The exact card is a Sound Blaster CT2230. I could use the CTCU/CTCM software, but I’m running the DOS mode from W95 and not DOS 6.22. CTCM says it can’t work under the W95 DOS, even when I use setver on it.

Reply 4 of 5, by Grzyb

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Syntho wrote on Today, 15:00:

CTCM says it can’t work under the W95 DOS, even when I use setver on it.

Yes, it needs patched to run under MS-DOS 7.x - https://cloakedthargoid.wordpress.com/ctpnp-dos7/

Or you can use UNISOUND instead.

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Reply 5 of 5, by Syntho

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Just tried unisound. Man, it’s flawless on the first try. I’ll just stick with that since it’s easier. Thanks.