I slipped and (mostly) built an Amiga 500 #Amiga #VintageComputing @erikarn

Adrian Chadd is half way through building an Amiga 500+ replica. The goal:

  • New PCB
  • New clear case
  • Actual floppy drive!
  • TF534 Accelerator, yes I am interested in FPU stuff for reasons and yes I’m sad about the 4MB of RAM but I’ll make do – terriblefire does a great job designing/building/debugging these accelerators and I’m glad they exist!
  • ECS Denise, also for reasons
  • 2MB chip RAM and some slow RAM too because again why not 3.x ROMs

The challenges:

  • I need a keyboard for it, but my “donor” machines, like my “donor radios”, all now work. Hilarious.
  • The Amiga 500+ board wasn’t well documented for assembly, until I looked. Closer.
  • Well, the 8375 Agnus I acquired is a PAL one, so I guess I’m building a PAL Amiga 500+. (Which is fine as you can switch it in software after boot, but STILL.)
  • Oh yeah, floppy drives. Ugh.

The PCB was picked it up from https://www.tindie.com/products/bobsbits/a500-amiga-500-replica-pcb/ . There’s a link with the component list. Adrian wishes for a “dead-ish” donor Amiga 500 of suitable vintage to grab parts from, but all their machines now work.

Read more on the blog here.


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