VOGONS


First post, by bloodem

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Some time ago, I bought a sound/video card bundle and I came across an Aztech card with a genuine Yamaha OPL3 chip (the low power version).
The card has the I38-SN96103 FCC ID, which apparently means that it's an Aztech Multimedia Pro 16 IIB-3D.
The card is non PNP, but only the base address is configurable through jumpers. I'm guessing the other settings are either configurable through software, or hardcoded in the EEPROM.

Digging through the Vogons driver library, I managed to find some Windows drivers that work OK, however the DOS behavior (without any drivers) is erratic to say the least.
In most games there's no FM and no digital sounds, in some games FM is working but digital sounds are not, while in other games digital sounds are working, but FM is not (this is very weird, I would expect at least the FM portion to always work).

Obviously, I tried all possible jumper settings, I switched the JMPCFG from "Software setting" to "EEPROM setting", but so far no success.
Anybody got any experience with these cards, do I need some type of software utility to initialize the card?

Some pics:

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2 x Socket 3 / 3 x Socket 7 / 4 x SuperSocket 7 / 4 x Slot 1 / 2 x Slot A / 5 x Socket 370
3 x Socket A / 1 x Socket 478 / 2 x Socket 754 / 3 x Socket 939 / 2 x LGA775 / 1 x LGA1155
Current rig: AM4 - Ryzen 5 3600X
Backup rig: LGA1151 - Core i7 7700k

Reply 1 of 3, by bloodem

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Never mind, found the drivers (it does need them for DOS), but there was a second issue, which was actually caused by CPU speed.
I was testing the card on a K6-2+ 550 MHz, and while I did disable the L1/L2 and external cache (so I had 386 equivalent speed), it seems that it wasn't enough for this card. I also had to set the frequency to 200 MHz and after that everything started working. Very interesting!
As a first impression, I like this card. Sound quality and SNR is pretty good and the very few games that I tried today (after solving the aforemention issues) worked great. No single cycle DMA clicking and also supports ADPCM.
In case anyone will need the drivers in the future, I'm attaching them here

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2 x Socket 3 / 3 x Socket 7 / 4 x SuperSocket 7 / 4 x Slot 1 / 2 x Slot A / 5 x Socket 370
3 x Socket A / 1 x Socket 478 / 2 x Socket 754 / 3 x Socket 939 / 2 x LGA775 / 1 x LGA1155
Current rig: AM4 - Ryzen 5 3600X
Backup rig: LGA1151 - Core i7 7700k

Reply 2 of 3, by Joseph_Joestar

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Interesting card.

I see the Analog Devices chip, so I'm assuming it is WSS compatible as well. Could you test a few WSS capable games on it? For example: Descent, Tyrian, Aladdin and WarCraft 2.

Using Audigy drivers with a Sound Blaster Live
Installing DOS drivers on an Audigy2 ZS
OPL3 vs. ESFM vs. CQM vs. SBLive
OPTi 82C930 review

Reply 3 of 3, by bloodem

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Joseph_Joestar wrote on 2020-10-25, 13:13:

Interesting card.

I see the Analog Devices chip, so I'm assuming it is WSS compatible as well. Could you test a few WSS capable games on it? For example: Descent, Tyrian, Aladdin and WarCraft 2.

Already tested, it is WSS compatible! It even has WSS volume settings in the mixer 😀

2 x Socket 3 / 3 x Socket 7 / 4 x SuperSocket 7 / 4 x Slot 1 / 2 x Slot A / 5 x Socket 370
3 x Socket A / 1 x Socket 478 / 2 x Socket 754 / 3 x Socket 939 / 2 x LGA775 / 1 x LGA1155
Current rig: AM4 - Ryzen 5 3600X
Backup rig: LGA1151 - Core i7 7700k