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.
