PC 20-III | 267723

PC 20-III | 267723

  • mainboard revision: 6.2A
  • CPU: Intel 8088-1 running at 4.77MHz (Standard), 7.16Mhz (Turbo), or 9.54MHz (Double)
  • Optional 8087 math co-processor
  • RAM: 640KB
  • ROM: 32KB Phoenix self-configuring BIOS Version 4.38
  • Chipset: Faraday FE2010A single chip controller IC
  • Clock: Battery-backed Real Time Clock (RTC) maintains the date and time while the system is powered off
  • Floppy Drive: 360K 5.25″ Chinon FZ-502 (SMC FDC9268 controller)
  • Hard Drive: WESTERN DIGITAL WD 93024 X 22MB 3.5″/HH IDE / XT
  • Sound: On-board piezoelectric beeper
  • Ports:
    • 9-pin d-sub bus mouse port compatible with Commodore Amiga 1352 mouse (MOS 5720)
    • 25-pin d-sub RS-232 serial port (Western Digital WD8250-PL)
    • 25-pin d-sub 8-bit Centronics parallel port (Paradise PPC1)
    • DIN-5 IBM PC XT-compatible keyboard port
    • 9-pin d-sub RGBI/Monochrome video port
    • RCA composite video port
  • Video: Onboard Paradise PVC4
    • MDA Monochrome Text
    • Hercules Monochrome Graphics
    • CGA Color Text and Graphics
    • Plantronics Colorplus Graphics
    • Alpha132 Monochrome Text
  • 3x 8-bit ISA slots for expansion
  • 75 watt power supply
  • work performed:
    • battery removed, minimal leakage, all neutralized and cleaned
    • FDD disassembled, cleaned and lubricated
    • whole machine completely dismantled and cleaned
    • mainboard and PSU recapped with Rubycon brand 105° type
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