VOGONS

Common searches


Search results

Display options

Re: MCA Adlib card -- just need pictures

The long wait is over! I have a working sound card using a CPLD instead of the P82C611. It works in my PS/2 Model 50Z and it seems partially functional in the Model 95 I borrowed (the card ID gets read successfully by the BIOS but the machine can't boot due to issues with the floppy controller.) …

Re: MCA Adlib card -- just need pictures

Since I have a running CPLD implementation, I figured there's no reason not to release the existing P82C611 version! Twitter announcement here: https://twitter.com/TubeTimeUS/status/1205968405309689856 Git repo here: https://github.com/schlae/plaid-bib Happy holidays everyone!

Re: MCA Adlib card -- just need pictures

Today I finished building and testing a version of my MCA Adlib clone that uses an off-the-shelf CPLD instead of the hard-to-find 82C611. ( https://twitter.com/TubeTimeUS/status/1197326314979512320 ) I've implemented a synchronous extended transfer cycle for read operations since the YM3812 requires …

Re: MCA Adlib card -- just need pictures

Quick update--the card is basically working (see https://twitter.com/TubeTimeUS/status/1173758579020402689 ) but there appears to be some sort of setup conflict with the hard drive that makes me run the setup disk every cold boot. Once I figure this out, I'll need to make a decision. One thing I …

Re: MCA Adlib card -- just need pictures

And the PAL chip dose not seem to have any lock bits or security, so should be easy to copy the code from it :) Really we don't even need that. It's just an address decoder and a tiny bit of glue logic which I was able to reverse engineer from understanding how the card is supposed to work. :happy:

Re: MCA Adlib card -- just need pictures

Hey folks, just a quick post to chat about what I've been working on ( https://twitter.com/TubeTimeUS/status/1162557495841189888 ). Yes, that's an Ad Lib MCA card based on photos that elianda/enigma provided. Here is the current status... I have a design that I'm about 90% sure matches the original. …

Page 1 of 1