Comments (2)
So unfortunately this very likely expected. nullbios only provides right now the necessary mechanics to boot up the hardware up to the program ROM, and also provides means to poll inputs and populate various variables in memory like the real ROM would.
It doesn't implements all the API calls that the real ROM provides, It's a small dozen, but the devkit provides c-based function to print on screen, clear sprites, clear tiles... So i never took the time to mock those out to be a feature-compatible BIOS.
From neogeodev's wiki, it appears that NeopenBIOS is another open source BIOS which looks more complete than mine (although the goal is not the same really: mine is just there to allow your ngdevkit ROMs to run on an emulator).
If you really want to make it work as a full replacement ROM, you'd have to implement all the BIOS syscalls as described in neogeodev wiki.
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Thanks. I close this as it is not an issue.
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Related Issues (20)
- Windows MSYS2 install pacman ' failed retrieving file ngdevkit.db.sig' HOT 2
- README-linux.md: ngdevkit.list sources list may be wrong and may miss readline-dev package dependency HOT 1
- 06-sound-sample no sound on real hardware with NEOSD HOT 7
- Makefile Issue In Terminal HOT 4
- Main.o error
- Compile Issue
- Can't compile the devkit HOT 1
- Save on MVS backup RAM HOT 6
- FYI: two related projects HOT 1
- Vertical shrinking & garbage HOT 7
- C++ compile issue HOT 2
- failed to install on macos brew HOT 3
- Debug in mame Help HOT 2
- Neo geo cd conversation help! HOT 3
- unable to locate package error HOT 4
- P ROM size is not enough HOT 19
- Typo in README-mingw.md HOT 5
- Suggestion: Discord Server For ngdevkit. HOT 1
- Support bank switching of P-ROM2
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