Super Game Boy DATA_SND DATA_TRN JUMP Programming Example 6 Run Custom Code Undake 30 SameGame Mario

Channel:
United States nensondubois
Subscribers:
1,680
Published on ● Video Link: https://www.youtube.com/watch?v=uWkzWzfEQlI


Game:
Super Mario Bros. (1985)
Duration: 2:46
209 views
2

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Space Invaders 94 Arcade Mode (Shown here https://www.youtube.com/watch?v=HcI4p8ko7Ng) 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 Undake 30 but it required a little bit of reprogramming the DATA_SND and it still doesn't save high scores. Might fix this in a later revision as well as add the title options to change BGM in order to play the unused songs.

Nintendo should have really did this and released it back in the day. Oh well.

Undake 30 Same Game Daisakusen Mario 鮫亀ＵＮＤＡＫＥ３０マリオバージョン

*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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