Thanks .. well my "simple" solution of getting another similar card from a completely different manufacturer didn't work.. I was sure it would and the money it cost would easily be paid back in time saved. But the card I chose (the PHILIPS PCA750AF card) didn't work because .. it identifies in …

yes, but I have no idea how. Ideally the card would have jumpers for PnP identifiers but it doesn't. there is a rom chip on the card (a 93C66) and I contemplated unsoldering it, reading it and programming a replacement, replacing the bad bytes. But there is no guarantee I'd be able to find them ( …

yes.. that sounds possible, but it will have to wait. the case prevents any useful access to the rear of the card. I have a dead 486 computer in a much more useful case, but I will have to resurrect that one first... (dead PSU and who knows what else?) thanks again for your help. if I get any …

Well it's presumably down to the PnP protocol. The ISA PnP specification is written by two old friends, messrs Intel and Microsoft and is at http://www.osdever.net/documents/PNP-ISA-v1.0a.pdf Quote: Page 10: Isolation Protocol (cont.) The key element of this mechanism is that each card contains a …

sorry, just to add to my last post because I realise I didn't answer all your questions, I get the problem using both line out and speaker out, and... um... games? what are those? windows? nope. This is a minimal linux install. R

Hi James thanks for all your help! mixer settings: since I am using the device in a driverless mode the mixer settings are just "write 0 to register 0" void resetmixer(struct soundcard *sc) { uint16_t base = sc->baseaddr; outb(0,base+4); // register 0 outb(0,base+5); // register 0 } I am using …

Thanks ever so much James! I am impressed! I changed those two caps.. both small 1uF caps on the input pins of the TEA2025. Things are now much better. One channel is producing the level I was expecting and really sounds fine. The other is definitely working (and independent of the first so it's not …

Hi I have been setting up old computers recently for a number of different applications. You guys have been the most helpful resource I have found on old hardware - thank you! I have an old Sound Blaster 16 value (CT2770) card which works but barely. I want it to use the OPL3 chip and am programming …

Hi I have been setting up old computers recently for a number of different applications. You guys have been the most helpful resource I have found on old hardware - thank you! What I want to do is to fill an old PC with ISA sound cards (at least 2, and 3 or 4 if possible) and use it as a synthesiser …