Kaypro

A Kaypro 10 I'm (very) slowly refurbishing

Log (most recent first)

• 2A fuse on mains side blew, probably when RIFA capacitor failed
• RIFA film capacitors in PSU replaced, they're notorious for failure after a long time. PSU still does not seem to provide rails. Fault in other components?
• Floppy seems fine, fault is in PSU. While diagnosing, got single arc in some PSU component. Does not boot, does not provide rails.
• Discover that disconnecting floppy allows boot to BIOS, suspect fault there causing overcurrent
• Does not boot, squealing/chirping noise, manual indicates short in a component
• Initial boot(s): HDD error of some sort

Reference

MFM

• David Gesswein's BeagleBone-based MFM emulator
• Kaypro 10 with MFM Hard Drive Reader/Emulator
• floppy (*not* HDD) MFM in Glasgow
  • whitequark seems to intend to do MFM drives at some point

Software

• SCS-Draw: teaching the Kaypro to draw
• Retrocomputing disk images, including CP/M and Kaypro stuff

Misc.

SCS-Draw: teaching the Kaypro to draw Introduction to CP/M A developer ports his game to Kaypro