My Vintage Computer Virtual Museum and blog page.


My IBM PCjr (added to my collection in 2017).

  • 4.77Mhz i8088 CPU
  • 1MB RAM (736k usable of 1MB on jrIDE sidecar)
  • 360K Floppy
  • 2GB Sandisk CF card as Hard Drive (jrIDE sidecar)
  • Game/Program cartridge slots
  • PCjr graphics (CGA plus some extra modes)
  • PCjr sound (TI chip 3 square wave and 1 noise channel)
  • Internal PCjr 300baud modem (OEMd by Novation for IBM)