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Re: My DIY ISA Audio Interface

Hi, It's quite interesting and intriguing why your card doesn't work. I have build three of them since I first started the project, and put them in various retro PCs, but the one I use the most has a Pentium MMX CPU running at 233 MHz. I mostly use that for retro-programming and listening to MP3s ( …

Re: My DIY ISA Audio Interface

The soldering appears to be of very good quality, thus you're right, it's not from there. But I have noticed that you have JP3 closed. It should be open (i.e.: no jumper set) so that the software could take control of the card. Otherwise, the card would attempt to read the EEPROM, which is empty. …

Re: My DIY ISA Audio Interface

Hi, I should really turn on the notifications (uh) to catch messages in time. These kinds of issues are a bit hard to debug from a distance. Maybe if you could add a picture of the card? Both solder-side and component-side. It could be anything from a soldering issue (even small solder bridges) to a …

Re: My DIY ISA Audio Interface

Good morning, I forgot about this thread altogether. With this occasion, I see that I have a few unread private messages -- haha, sorry for the (probably very) long delay for me to reply. I remember I tested generic OPTi 82c924 drivers with Windows 3.11 and they worked. Though, I don't remember …

Re: PC Speaker Driver

Ha ha, that was my intention as well. I was once reading about weird hardware cards of the '80s and the '90s and there were all sort of instrumentation adapters and external hardware control. But nothing for the hated PC Speaker. I thought I'd show it some love by designing a card for it. Up until I …

PC Speaker Driver

Hi, From the category of weird (and possibly useless) hardware , I've designed an ISA card that can control the volume of the PC Speaker through software. I created it in 2021 and wrote the software at the same time, but I didn't have time to assemble the card or test the driver until this summer. I …

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