Tengen 80004

Board

Tech Specs:

Max. 64K PRG ROM.
Max. 64K CHR ROM.
4-screen mirroring.
MIMIC-1 mapper.

Description:

This board is only found on one cart- Gauntlet. It uses a 2K RAM and a 74LS00 chip to map it in with the 2K in the NES console to produce an even 4K of nametable space. The Nintendo-made Gauntlet uses a single 8K RAM with A12 grounded to get 4K of nametable space. See Here for information about the MIMIC-1.