JxROM
The generic designation JxROM refers to cartridge boards made by Nintendo of Europe that use the Sunsoft FME-7 mapper IC. These boards are the European counterpart to boards manufactured by Sunsoft that used the FME-7, including several Famicom boards and the North American NES-BTR. The iNES format assigns Mapper 69 to JxROM.
Nintendo manufactured these JxROM boards for the European market:
| Board | PRG ROM | PRG RAM | CHR | comments |
|---|---|---|---|---|
| JLROM | 256 KiB | 128 KiB ROM | ||
| JSROM | 128 KiB | 8 KiB (no battery) | 256 KiB ROM | equivalent to BTR |
Sunsoft manufactured the Famicom counterparts:
| Board | PRG ROM | PRG RAM | CHR | ROM Name | comments |
|---|---|---|---|---|---|
| BAT*-E301* | 128 KiB | 128 KiB ROM | Batman (J) | ||
| BBW*-E301* | 128 KiB | 8 KiB (battery) | 256 KiB ROM | Barcode World (J) | with expansion (Barcode Battler) |
| *FC-*DBT | 128 KiB | 8 KiB (no battery) | 256 KiB ROM | Dynamite Batman! (J) | FC counterpart of BTR |
| DD2*-E301* | 256 KiB | 8 KiB (battery) | 256 KiB ROM | Dodge Danpei 2 (J) | |
| *FC-*GMK | 256 KiB | 128 KiB ROM | Gimmick! (J) | with expansion sound (YM2149) | |
| GRM*-E301* | 128 KiB | 256 KiB ROM | Gremlins 2 - The New Batch (J) | ||
| HEB*-E301* | 128 KiB | 128 KiB ROM | Hebereke (J) | ||
| PYK*-E301* | 128 KiB | 128 KiB ROM | Pyokotan no Dai Meiro (J) |