Reproduction of the Texas Instruments TI-74 Battery Backed RAM Cartridge. The implementation is based on material from TEXAS TI-74 BASICALC & 8K RAM Cartridge teardown. The discussion on creating this cartridge is at TI-74 RAM Cartridges - Tomy Tutor, CC40, 99/2, 99/8, Cortex, 990 mini - AtariAge Forums
- TI-74