Commodore Amiga 500

Configuration

• Built: 1991 (week 3)
• Mainboard: Revision 6A
• CPU: 68010
• Chipset: Nearly ECS (HiRes Denise, OCS Agnus)
  • Agnus: 8372A (date code 4690)
  • Denise: 8373R4PD (date code 3692)
  • Paula: 8364R7 (date code 5290)
  • Gary: 5719 (date code 4990)
• RAM: 1MB Chip RAM + 4MB Fast RAM (via GVP expansion)
• Pixel perfect HDMI output
• Flash ROM (AmigaOS 2.04, AmigaOS 3.2.1)
• GOEX floppy drive emulator with OLED display
• GVP Impact Series II Harddisk

Trivia

• This is my very first Amiga.

Restauration Works

• Restauration was carried out from January thru April 2021
• Case and keyboard cleaned and whitened
• All electrolytic capacitors replaced with Panasonic caps (lifetime up to 10,000 h)
• Floppy drive replaced with Centurion Tech GOEX drive
• HDMI output via Amiga500CPLD and Raspberry Pi Zero
• CPU replaced with MC68010/12 (still clocked at 7 MHz)
• Original PSU replaced with a Mean Well RT-65B
• Trapdoor memory expansion and RTC is still present, but without RAM and battery

Known Issues

• Two open drill holes on the right side, from old switches.

History

• 2022-01-23
  • Kickstart switch via single Flash ROM board
  • Top shield could be mounted again
• 2021-12-18
  • HDMI now via RGBtoHDMI CPLD v1 board
  • HDMI output connected via FPC ribbon cable and new holder
• 2021-10-06: Replaced CPU with MC68010/12
• 2021-04-04
  • Reassembled the machine
  • HDMI output placed at the former floppy eject button hole
  • Mounted a ROM switch with two EPROMs
  • Top shield had to be left out because of height of RGBtoHDMI and ROM switch
  • Replaced original badge with silver badge (not too happy with the result though)
  • Refurbishment completed
• 2021-03-29: Case and keyboard returned from whitening
• 2021-03-20
  • Original PSU board replaced with Mean Well RT-65B
  • Flash rust polished from the metal shielding
  • Floppy drive replaced with CenturionTech GOEX drive + OLED display
  • First test run after about 28 years
• 2021-02-28: HDMI output via RGBtoHDMI
• 2021-02-21: All electrolytic capacitors replaced with Panasonic caps
• 2021-01-30: Case and keyboard sent in for cleaning and whitening
• 2021-01-22: Start of refurbishment
• 1994-04-01: Retired from active use
• 1993-??-??
  • Swapped mainboard with a Revision 6A
  • Extended chip RAM to 1MB, by using the RAMs of the trapdoor extension
• 1992-05-07: Upgrade to Kickstart 2.04
• 1989-??-??: Added 512KB trapdoor expansion
• 1988-??-??: Date of purchase