Photo a a messy desk with a display at the top showing LisaTest saying the system is working properly, a stack of green circuit boards on the right with a mess of wires.

Notices where this attachment appears

1. Embed this notice
   paulrickards (paulrickards@mastodon.social)'s status on Saturday, 09-Dec-2023 07:47:26 JST paulrickards

   in reply to

   Another #AppleLisaClone update! You’ll remember I was debugging my new #AppleLisa breakout board. I was getting strange behavior: system would boot only once when cold, reboots after would hang and not progress to POST.

   I focused most of my time on my board. Cutting traces, bodging, testing. Nothing was improving.

   It wasn’t until I put in a new CPU card when things suddenly began working 100%!

   Soft power, floppy, Mac keyboard input all working! 😎

   #RetroComputing