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  1. arnold.exe

    modern CRT8002 IC replacement/substitute?

    I'm working on repairing a couple of BigBoard II systems, and they both have busted CRT8002 chips, broken in wildly different ways. I checked all the signals, they look pretty good, they're just displaying the wrong characters or glyphs that aren't even in any of the character sets. And they're...
  2. arnold.exe

    Looking for docs for any Micro-Link STDBus cards, ideally STD147 or STD207

    I got a hold of a Micro-Link build inside a Heath H19, and the main board is a STD147, a Z80 CPU card, but unfortunately I don't have a manual or any way to decipher device addresses since I'm not great with disassembly. I also have a STD207 I bought off ebay, which as a 68k chip for its main...
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