Max. 64K PRG ROM.
Max. 64K CHR ROM.
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.