Showing posts with label Apple Macintosh 8021 8048 pascal repair. Show all posts
Showing posts with label Apple Macintosh 8021 8048 pascal repair. Show all posts

Tuesday, September 10, 2024

Apple M0110 Keyboard CPU replacement - part #1

My friend Jim bought an Apple Macintosh at the Vintage Computer Festival Midwest on Saturday. It's got a bad keyboard. The keyboard has a bad Intel 8021 CPU.

I need to replace that chip. It's going to take wayyyy more time that I'm used to dumping into a project successfully.  This is part of my process to push myself forward.

So far I've:

  • Searched for an 8048 series disassembler, found none
  • Downloaded the 8048 series manual from BitSavers
  • Decided to write an 8021 specific disassembler in pascal
  • Started a Lazarus project in my C:\res21 folder
  • Published the above to an MIT licensed GitHub repository
Let's see how this goes.