Gregory's Serveri've got it! it perfectly matches the pinout of the MC6844 DMA controller! mystery solved.
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19 comments
     @tubetime you’ve heard of an op amp but what about a pop amp??? got some parts in from China, but I need to test them to see if they actually work. they've been painted and remarked (of course 😑) the ADC was tricky to test. one of them was bad and had some stuck outputs. I wonder if it'll work? I'll have to fire up the Apple II to find out.  @tubetime "Apple II goes here" ok, now I know you made it... I can guess its a super-rare IIe card that nobody has seen the likes of since the day after it came out...  @tubetime :-) Amazing. Before buying are you able to simulate the board, and is that useful? @benjohn there aren't any models of the larger chips. it's easier to just make the board and try it out irl! |
boards are on order, so stay tuned.