Hello.

How are the resources for the sound card set?

In the case of Duke Nukem 3D (which I assume), you should use 8-bit mixing as the CT4170 uses the Vibra16XV chip which doesn't support HDMA.

Try this driver

https://www.vogonsdrivers.com/getfile.php?fil … menustate=44,37

dominusprog wrote on 2023-10-13, 18:48:

Try this driver

https://www.vogonsdrivers.com/getfile.php?fil … menustate=44,37

I tried this driver, and still doesn't work.

Here photos of AUTOEXEC.BAT, the installation of CTCM and setup of duke nukem for example. Another games like Wolf3d don't open.

D1 H1 says that normal DMA and HighDMA are set to 1. In duke nukem setup (if you choose 16 bit sound effects) you cant set normal DMA and HighDMA to the same value. This results in no sound effects.
In your setup screen it says High DMA (called 16 bit DMA) is 5...
Choose 8 Bit sound effects so Duke is using the normal (8-Bit) DMA.
Like mentioned before.
Before you ask : No, you cant set the high DMA to a different value than 1 via the set blaster variable. I dont know why but it is fixed.... At least on my Vibra 😉

You could also try to set the T6 (soundblaster 16 stereo mode) value to T3 (soundblaster 2.0 stereo mode)

Is there a reason to use IRQ 10 instead of 5? Just asking.

There is no real reason to use IRQ 10 for SB, many games don't support it well. Not to mention that the DOS/4GW extender doesn't support IRQs higher than 7.

Gmlb256 wrote on 2023-10-14, 01:13:

There is no real reason to use IRQ 10 for SB, many games don't support it well. Not to mention that the DOS/4GW extender doesn't support IRQs higher than 7.

This. Disable your parallel/LPT1 port and use IRQ7 for your audio. Who needs a printer on their retro set up anyway?

Gmlb256 wrote on 2023-10-14, 01:13:

There is no real reason to use IRQ 10 for SB, many games don't support it well. Not to mention that the DOS/4GW extender doesn't support IRQs higher than 7.

I had that experience with my CT2290 before (it does not have jumpers for IRQ/DMA). Some games like Wolf3D would crash with the card defaulting to IRQ10. Forcing the card to IRQ5/DMA1 using DIAGNOSE and then everything worked okay.

UNISOUND can initialize Creative cards, and it will honor whatever you set in BLASTER environment variable. Set the correct values you want the card to use in BLASTER before running it. I'm not sure if CTCM will honor the BLASTER environment variable as well, but UNISOUND so far could do more than what CTCM could.

Not sure if there was any game explicitly wanted a sound card to use IRQ7. Most games I played are happy to use IRQ5 which is not going to conflict with anything unless you have a second LPT port (278h/IRQ5).

LSS10999 wrote on 2023-10-14, 04:16:

UNISOUND can initialize Creative cards, and it will honor whatever you set in BLASTER environment variable. Set the correct values you want the card to use in BLASTER before running it. I'm not sure if CTCM will honor the BLASTER environment variable as well, but UNISOUND so far could do more than what CTCM could.

It isn't that complicated with CTCM. In pure DOS, the resources can be changed with CTCU or editing the CTPNP.INI file. In Windows 9x, they should be changed thru Device Manager to take effect.

UNISOUND does initialize the sound card quicker than CTCM and it much simpler though.

Not sure if there was any game explicitly wanted a sound card to use IRQ7. Most games I played are happy to use IRQ5 which is not going to conflict with anything unless you have a second LPT port (278h/IRQ5).

There are a some of these that were from the early 90s and they only enabled digitized sounds when the SB IRQ was set either to 3 or 7. I know two of them which are It Came from the Desert (only IRQ 3, the developers incorrectly thought that it was default factory configuration of older SB cards) and Stellar 7.

On the other hand, Batman Returns refuses to use digitized sounds when the SB IRQ was set to 7 due to nonsensical restrictions.

conradoz wrote on 2023-10-13, 21:25:

dominusprog wrote on 2023-10-13, 18:48:

Try this driver

https://www.vogonsdrivers.com/getfile.php?fil … menustate=44,37

I tried this driver, and still doesn't work.

Here photos of AUTOEXEC.BAT, the installation of CTCM and setup of duke nukem for example. Another games like Wolf3d don't open.

Why is the IRQ set to 10?