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Which one do you have? I've read and burned ROMs just fine with the Relatively Universal ROM Programmer

Just tried this on my Plus

When first powered on, the geometry of the picture is fine. Over time, it moves to the left. The analog board still works but hasn't been recapped

please please please please review my MicroMac Performer derivative design k thx bye

now explain why it's called dd not cc

https://68kmla.org/bb/index.php?threads/how-to-repair-a-powerbook-140-180-interconnect-cable.46387/ You can use an 80-conductor Ultra ATA cable

Or you could buy the Relatively Universal ROM Programmer for $12 if your wallets aren't overflowing Since I own one I could bake you a special pair of ROMs @Brutus75

We know GAL 7 is a clock doubler, but can it be modified to be a clock quadrupler? A stock Plus runs at 8MHz, so times four that's 32MHz

Iteration #2... FPU socket has been erased. Still need to fix some bugs in the silkscreen and via placement in order to pass DRC but this is basically what the finished board should look like. JLCPCB will mint 5 of these for $7. Is there a guide for avoiding fake 68030s?

I would make sure the new EEPROM is the same speed or faster than the one you're replacing.

The correct choice would be a 1 Mbit EEPROM.

I'm considering cutting the FPU from my board, I doubt most programs use it. (Which ones do?)

https://www.imania.dk/relatively-universal-rom-programmer.htm Gerber files for the Rominator are available, but not the schematics. I would ask the vendor for them. If they can't provide you with schematics, I would be happy to draw them for you from the Gerber files.

The inverse of this is the fact that you can boot NetBSD on a 68020 and beyond, but not on a 386

My board is intended to be easy to assemble, without having to solder dense surface mount packages. If you want QFP I'd say do it yourself, if I can do what I've done here then you can too. What is this pattern called? I want to attach a via to the ground plane like these holes have been...