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Issues with a CT2940 / Total Newb Here

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First post, by Fukase23

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Feel free to clown on me. I’ve been using this website for a while but never made any account. Today, I’ve acquired a CT2940 PnP for my 486 but I have had issues making it work.

The FM sound seem to work in DOS but it’s kinda quiet In windows sounds don’t work or if they do you have to crank the volume at 100% to faintly hear some noise instantly cutting off.

Diagnose.exe give me Error at setting IRQ to 5
I cannot quit Win3.11 by exiting to DOS because something seems to prevent “unloading” everything and I get soft locked on the desktop.

I’ve included pictures of my Autoexec.bat and Config.sys, somebody here must have a solution to a simple problem. I never used this type of computer before, thanks for reading!

Reply 1 of 4, by asdf53

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First, make sure that there is no non-PnP card in your system already set to IRQ 5 using the jumpers on the card.

If you have a newer board that uses PCI slots, and you have a PCI card installed, go into the BIOS and see if there's an option to reserve IRQ5 for ISA cards to prevent IRQ5 from being assigned to a PCI card.

Then run C:\CTCM\CTCU.exe, select Menu>PnP cards and see if your card is shown there. If I remember correctly you can set the IRQ to 5 there.

Reply 2 of 4, by Fukase23

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Like this?

Reply 3 of 4, by asdf53

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In the last screenshot, the settings list should contain an IRQ. If not, press "reconfigure" and try to set an IRQ manually.

But before you do this, can you post a screenshot of the output from CTCM.exe? It should configure the sound card automatically, it picks an IRQ and then updates the SET BLASTER line in autoexec.bat. Did it set a blaster variable? You can verify this by typing "SET" at the command prompt.

I also recommend HWinfo for DOS: https://www.hwinfo.com/download/

This tool has an option to list all IRQs in your system and the devices that are assigned to them. Very useful for troubleshooting. It would allow you to see if IRQ 5 is already taken by something else.

Reply 4 of 4, by dionb

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And before you do that, go into BIOS as suggested and reserve IRQ5 for Legacy ISA (or whatever the name of the setting that isn't PCI/PnP). But it would help if you were to give us a list of hardware you're using, in particular which motherboard.

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