TxROM

The generic designation TxROM refers to cartridge boards made by Nintendo that use the Nintendo MMC3 mapper.

The following TxROM boards are known to exist:

Board	PRG ROM	PRG RAM	CHR
TBROM	64 KB		32, 64 KB ROM
TEROM	32 KB		32, 64 KB ROM
TFROM	128, 256, 512 KB		32, 64 KB ROM
TGROM	128, 256, 512 KB		8 KB RAM
TKROM	128, 256, 512 KB	8 KB	128, 256 KB ROM
TKSROM	128, 256, 512 KB	8 KB	128 KB ROM
TLROM	128, 256, 512 KB		128, 256 KB ROM
TLSROM	128, 256, 512 KB		128 KB ROM
TNROM	128, 256, 512 KB	8 KB	8 KB RAM
TR1ROM	128, 256, 512 KB		64 KB ROM + 4 KB VRAM (4-screen Mirroring)
TSROM	128, 256, 512 KB	8 KB	128, 256 KB ROM
TQROM	128 KB		32, 64 KB ROM + 8 KB RAM
TVROM	64 KB		32, 64 KB ROM + 4 KB VRAM (4-screen Mirroring)