SMROM

SMROM (NES-SL1ROM and HVC-SL1ROM) is one of the less common boards within the SxROM set. Like other SxROM boards, SL1ROM uses the Nintendo MMC1 ASIC. It should be noted that only Japanese HVC-SMROM boards have ever been produced, so this board has no 72-pin "NES-SMROM" counterpart.

Overview

• PRG ROM size: 2x128 KB (DIP-32 custom pinout ?)
• PRG ROM bank size: 16 KB or 32 KB
• PRG RAM: None
• CHR capacity: 8 KB RAM
• CHR bank size: 8 KB or 4 KB
• Nametable mirroring: Controlled by mapper
• Subject to bus conflicts: No

Hardware

This particular board uses two 128 KB PRG ROM chips instead of just one 256 KB chip. Aside of this, this board is functionally identical to SGROM.

See also

• Nintendo MMC1