Super Game Boy DATA_SND DATA_TRN JUMP Programming Example 7 Run 65c816 SHVC SNES Code NP Dr. Mario
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Space Invaders 94 Arcade Mode is known for being able to execute 65c816 code by inserting custom code in SNES WRAM via the Super Game Boy DATA_SND, DATA_TRN and JUMP command packets, then jumping to the new address and resetting the SNES NMI program counter to the new bank destination. The game (or program) now takes over the SNES CPU directly from WRAM to do whatever it was programmed to do.
Space Invaders 94 is the same size as NP. Dr. Mario but it required a little bit of reprogramming the DATA_SND.
*Not releasing the ROM due to draconian copyright concerns. Don't ask. (I am known for releasing PD material and my own custom code however this qualifies as a commercial ROM.)*
This will also work with the Super Game Boy 2 BIOS as well. I just used the original since most people are more familiar with that version. Tested and recorded with a GB Everdrive.
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