Prince Of Persia and GODS sound issues with IPC IPS16

Discussion about old sound cards, MIDI devices and sound related accessories.

Prince Of Persia and GODS sound issues with IPC IPS16

Postby starquake » 2017-7-15 @ 18:57

So I bought a 486DX-100 to play some DOS games. It came with a IPC IPS 16. At first I was quite impressed with the sound, until I started Prince of Persia. I can hear the gate close but after that my steps can not be heard. Some sounds get through but some sounds can not be heard.

Then I started GODS. The intro of that game is even worse! There are cracks and the singing doesn't start.

I tried setting the card to A220 I7 D1 and setting the BLASTER environment variable accordingly. I also tried A220 I5 D1, but it does not resolve the issue.

Anyone else have similar experiences with Media Magic IPC IPS16. Any tips on how I should proceed?
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Re: Prince Of Persia and GODS sound issues with IPC IPS16

Postby Jo22 » 2017-7-16 @ 15:50

starquake wrote:Anyone else have similar experiences with Media Magic IPC IPS16. Any tips on how I should proceed?

Sorry, no. Can you post a picture of your card, please ? I googled and mainly found ads for a webcam model (IP camera). :(

starquake wrote:Then I started GODS. The intro of that game is even worse! There are cracks and the singing doesn't start.

A while ago, we discussed that game on vogons to learn about balance settings and filtering (synth/wave).
Maybe that thread will help you to figure how to configure your sound card accordingly.
You can read it here : viewtopic.php?f=62&t=49683
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Re: Prince Of Persia and GODS sound issues with IPC IPS16

Postby starquake » 2017-7-17 @ 13:32

Thanks for your reply. I've read the thread you linked but it's not clipping I'm hearing. The digital voices are out of tune.

I'll post a picture of my card and maybe even record a video of what's happening later.
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Re: Prince Of Persia and GODS sound issues with IPC IPS16

Postby starquake » 2017-7-17 @ 22:20

Here are some pictures of the front and the back:
http://imgur.com/a/LR2hB

And here's what's happening:
Prince Of Persia: https://www.youtube.com/watch?v=PWZccB9jy6c
Sometimes on the first time the music doesn't work. If that is the case the guy stays crouched and I can't do anything. Second time some sounds are missing.

GODS: https://www.youtube.com/watch?v=Zetr7Jt3aNg
There's a lot of cracks and pops and the singing is out of tune, the drums are too slow. So I think the samples are played at a too low sample frequency.

Any ideas to what I could do? There are 25 other games that work just fine. Pinball Dreams 1+2, Warcraft,

BTW, don't think too long about it. I can't find anything about this sound card and I saw a YAMAHA SM-718 with IDE for $5 so I decided to order that one.

EDIT: Fixed imgur link
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Re: Prince Of Persia and GODS sound issues with IPC IPS16

Postby Jo22 » 2017-7-18 @ 01:32

Hi, thanks for the photos! Your card looks well-built and has a true OPL3, by the way! :)

Also thanks for the recording of GODS! It really sounds, uhm, "special".. ;)

I'm not sure what's the exact problem, though.

If I had to guess, I would say it is some kind of IRQ problem.
Or maybe the card is not 100% SB compatible and these games are just making use of uncommon features.
Like using strange block-sizes, DMA tricks or somehting along these lines.

In case of Prince of Persia, it could also be related to the IRQ setting.
That games is a true classic and expects the card at IRQ7.

As for GODS.. Well, I'm not so familiar with the game, ie. I haven't really played it so often.

It's not much, but here are a few ideas:

a) Configure the card to IRQ7, Port 220, DMA1.
Set the card to SB1.5 or SB2 (not Pro) compatibility, if possible.

b) Try to disable your LPT1 printer port.
Because it is usually on IRQ7, too.

c) Run NSSI and let it detect the sound card.
You can get it here: http://www.navsoft.cz/products.htm
Note: You may have to unload shells like Norton Commander (ncsmall) before running it,
because NSSI is a bit paranoid and mistankenly believes there's a memory-resident debugger active. :D

Edit: Your card has got a crystal codec (cs4231-kl), just like the Gravis Ultrasound MAX!
So it is apparently Sound Blaster Pro 2 and also WSS compatible.
http://www.amoretro.de/2012/06/gravis-u ... v-1-8.html (English translation)
Attachments
nssi_sound.jpg
NSSI detected my SB16..
Last edited by Jo22 on 2017-7-18 @ 01:46, edited 1 time in total.
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Re: Prince Of Persia and GODS sound issues with IPC IPS16

Postby Kippesoep » 2017-7-18 @ 01:45

The crackling on Gods seems to be when there is something fading in/out. Have you played around with the graphics card settings? Specifically the palette snoop and bus mastering settings. Now I'm also wondering what the gfx card is.

Oh, and it's not unheard of for interference to be audible depending on which slot the sound card is in. Moving it away from the graphics card (or to any other slot from the one it is currently in) may be beneficial in some cases.
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Re: Prince Of Persia and GODS sound issues with IPC IPS16

Postby starquake » 2017-7-18 @ 08:59

Wow thanks for all the tips! I will try all the things you guys mention and report back.

I do want to say again though: almost everything else I throw at it runs just fine. Pinball Dreams 1+2, Warcraft, Doom, Wolfenstein3d,

So I'm afraid it's just incompatibilities with the SBPro emulation. But we will see!:
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