It is a common statement that Nintendo manufactured all the cartridges and ROM memory boards for the NES. This statement is mostly true. However, Konami supplied Nintendo with boards for many of its more popular games, while Nintendo handled the rest. They use 6-digit codes. However, some of the games also use Nintendo boards as well, which leads me to believe that Konami supplied its boards to avoid shortages and eliminate surplus ROMs.
351258: UNROM
351298: UNROM
351908: SLROM
352026: TLROM + LS32
I have also seen a Konami UNROM board with a LS02, (Metal Gear) presumably to eliminate bus conflicts. There is no board name visible on the board.
Acclaim also produced both boards and cartridge shells late in the Nintendo's life, and their boards use five digit codes. The cartridges contain somewhat different looking warning labels on the back. The PCBs are marked as Acclaim and lookquite different from Nintendo's.
51555: TLROM
54425: AOROM
55741: MC-ACC + LS08
53361: MC-ACC
56504: NROM-128
It is interesting that Acclaim used what is essentially a TLROM board with a Nintendo MMC3 for one game (Smash TV) and the MC-ACC for a bunch of others. All the MC-ACC games use mapper 4, and all of them came out later than Smash T.V. Probably Acclaim convinced Nintendo to allow it to use its own hardware as Nintendo's own factories were busy churning out Super Nintendo hardware and games in return for supporting the NES during its lean years. Or perhaps the MC-ACC is not a true clone of the MMC3 but like Tengen' MIMIC-1 chip (also used in Nintendo's D series of boards) only implements some of the MMC3's functionality.
351258: UNROM
351298: UNROM
351908: SLROM
352026: TLROM + LS32
I have also seen a Konami UNROM board with a LS02, (Metal Gear) presumably to eliminate bus conflicts. There is no board name visible on the board.
Acclaim also produced both boards and cartridge shells late in the Nintendo's life, and their boards use five digit codes. The cartridges contain somewhat different looking warning labels on the back. The PCBs are marked as Acclaim and lookquite different from Nintendo's.
51555: TLROM
54425: AOROM
55741: MC-ACC + LS08
53361: MC-ACC
56504: NROM-128
It is interesting that Acclaim used what is essentially a TLROM board with a Nintendo MMC3 for one game (Smash TV) and the MC-ACC for a bunch of others. All the MC-ACC games use mapper 4, and all of them came out later than Smash T.V. Probably Acclaim convinced Nintendo to allow it to use its own hardware as Nintendo's own factories were busy churning out Super Nintendo hardware and games in return for supporting the NES during its lean years. Or perhaps the MC-ACC is not a true clone of the MMC3 but like Tengen' MIMIC-1 chip (also used in Nintendo's D series of boards) only implements some of the MMC3's functionality.