2MB ROM + 8KB SRAM Genesis Development Cartridge

Completed: 8/5/2010, Build Time: Two Days.

Notes:
This cartridge was designed and built for personal testing use. It supports up to 2MB ROM divided between two M27C801 UV EPROMs. As this was based upon an EA P10002 board, 8KB of battery backed SRAM is included in the form of a GM76C88ALK. Three status LEDs were added to monitor cartridge SRAM R/W access, as well as cartridge ROM access (which is especially helpful to determine where lockups have occured). Decoding for the LEDs was performed through a single 7400 IC.


Hardware Photos: