Bygonebytes

Introduction



A quick summary detailing the 2021 changes to the Electron catridges I built in 2020:



Top left to right - 2020:

  • Dual User Port v1.1
  • Dual ROM/User Port
  • Elektor SRAM cartridge - modified to use two 32K static RAM's instead of four 8K RAM chips.


  • Middle left to right - 2021:

  • Dual ROM/User Port using a GAL PLCC chip v2.1.
  • Dual ROM/User Port using a GAL DIP chip v3.1.
  • Elektor SRAM cartridge - modified to use a single 32K static RAM chip v2.0.
  • Elektor SRAM cartridge - modified to use a single 32K static RAM chip with battery backup v2.5.

  • Bottom left to right - 2021:

  • Elektor SRAM cartridge - modified to use a single 32K static RAM chip with a third ROM/RAM bank v3.0.
  • Elektor SRAM cartridge - modified to use a single 32K static RAM chip with a third ROM/RAM bank and battery backup on the 32K RAM v3.5.
  • Elektor SRAM cartridge - modified to use a single 512K static RAM chip, a third ROM/RAM bank and battery backup on the 512K RAM v1.0.
  • Slogger Pegasus 400 with Dual User Ports and LCD port.


  • Links to all the cartridges and build details are available on the home page.