NES-SJROM

SJROM Board

Tech Specs:

Standard MMC1 board.
Max. 256K PRG ROM.
8K CHR RAM.
8K of WRAM which is battery-backable.

Description:

Standard MMC1 board with 8K of WRAM and CHR RAM. The WRAM is battery-backable, but I don't think any carts used it.