OBC-1

OBC-1 is among the simplest of the SNES enhancement chips, used only by Metal Combat: Falcon's Revenge. It helps build sprite tables in RAM, which are then DMA'd into OAM.^[2]

References

• https://forums.nesdev.org/viewtopic.php?p=241441#p241441
• https://forums.nesdev.org/viewtopic.php?t=4381
• https://github.com/ares-emulator/ares/blob/master/ares/sfc/coprocessor/obc1/obc1.cpp
• https://snescentral.com/pcbboards.php?chip=SHVC-2E3M-01