VOGONS


First post, by pshipkov

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Recently i have been experimenting with Alaris Cougar II motherboards and various sound cards.
I noticed that PnP cards by Creative Labs such as SoundBlaster 1740 and 3980 are conflicting on all DMA channels.
Using TCMU i experimented with all possible combinations but no matter what the DMA conflicts stay no matter which channel i pick - 0, 1, 3, 5.
At the same time SoundBlaster Pro 2 and ESS cards work flawlessly.
Do i miss something here?

retro bits and bytes

Reply 1 of 6, by SScorpio

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What else do you have installed in the PC? Are you running from DOS or Windows?

If DOS have you tested initializing the cards with Unisound?

Reply 2 of 6, by Disruptor

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Do you use them at the same time?

What's about different HIGH DMA channels? 6 and 7?

Try like
#1 A220 I5 D1 H5
#2 A240 I7 D3 H7

However they still both will use same Adlib address ports A388. I do not know what will happen here.

Reply 3 of 6, by pshipkov

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Running in DOS.
There is a VLB video card present only and nothing else, but the motherboard has onboard controllers for IDE, COM, LPT, and GAME ports.

Initially i used unisound, but that did not work either. Unisound does not report any errors.
In fact using CreativeLabs AWE32 tools don't report errors during initialization either.
This is misleading of course. But CTMU has built-in tests that report errors. Also DIAGNOSE reports error in interactive (GUI) mode.

@Disruptor
Quite sure i tried the suggested by you configurations among many others.
Is there anything specific about them, or just combos that worked for you?

retro bits and bytes

Reply 4 of 6, by SScorpio

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pshipkov wrote on 2025-05-17, 20:32:

Running in DOS.
There is a VLB video card present only and nothing else, but the motherboard has onboard controllers for IDE, COM, LPT, and GAME ports.

Wait... you just said the motherboard has an onboard gameport? Does it also have onboard sound? Make sure that's disabled in the BIOS under integrated devices. That's the likely thing eating the resources you want to use.

It's possible the MB detected non-PnP cards using the resources and automatically disabling the onboard sound. But using a PnP card, the onboard sound is left on.

Reply 5 of 6, by Disruptor

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No, I just use these when I have 2 soundcards in one computer.

Which PnP-manager do you use?
CTCM?