NES 2.0 Mapper 392 denotes the 00202650 PCB, used on an 8-in-1 multicart. It uses an MMC3 clone with both CHR-ROM and CHR-RAM and an outer bank register that is implemented using a GAL16v8.
The circuit board mounts two PRG-ROM chips each holding 512 KiB of game data (U2/U3), a third PRG-ROM chip with 32 KiB of menu data (U1), as well as two 512 KiB CHR-ROM chips holding game graphics (U10/U4) and 8 KiB of CHR-RAM (U6). The NES 2.0 file holds these chips' data in the order U2-U3-U1-U10-U4.
Mask: $E000
D~7654 3210
---------
...M .BBB
| +++- PRG/CHR A19..A17 in game mode
+------ 0: Menu Mode
1: Game Mode, lock register
Categories: MMC3 with CHR ROM and CHR RAM, Mappers with scanline IRQs, Multicart mappers