PC 20

Serial: DA4 4578

• CPU: AMD P8088 [1982] @ 4,77 MHz
• Memory: 640K (with memory expansion in RAM sockets)
• FDD: BASF AG 6128-C 5.25” 360 KB DS/DD [technical manual]
• HDD: BASF AG 6188-R1 10MB ST412 5.25″
• HDD controller: XEBEC IBM Fixed Disk Adapter V3 [BIOS]
• BIOS: Commodore PC BIOS
• Video: Monochrome 8bit ISA card
  • 80 x 25 characters, 640 x 200 pixels
• 5x ISA 8bit extension slots
• external connectors: RS232, Parallel, Keyboard

• work performed:
  • completely dismantled and cleaned
  • PSU recapped with Rubycon brand 105° type
  • mainboard(s) recapped with Rubycon brand 105° type
  • did not read/write disks: one faulty 7438 replaced [did not pass through floppy read data]
  • BIOS sticker/label re-attached
  • broken video connector on ISA card replaced
  • new slot cover and case screws
  • HDD backup [Ghost 2] via PC 45-III