Adding Stella as A2600 emulation core

TASEmulators / BizHawk

BizHawk is a multi-system emulator written in C#. BizHawk provides nice features for casual gamers such as full screen, and joypad support in addition to full rerecording and debugging tools for all system cores.

http://tasvideos.org/BizHawk.html

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Adding Stella as A2600 emulation core #3911

Open SergioMartin86 opened 1 month ago

SergioMartin86 commented 1 month ago

Adding Stella as A2600 emulator.

Progress has been painful and messy; don't expect minimalism during this first stage. We can do the fine tuning once everything works correctly.

Check if completed:

[x] I have run any relevant test suites
[x] I, the committer, have read the licensing terms for contributors (last updated 2024-03-20) and am compliant
[x] Load Rom
[x] Advancing Frame
[x] Processing Digital Inputs
[ ] Processing Analog Inputs
[x] Rendering frame into the screen
[x] Rendering sound
[x] Memory Accesses
[ ] CPU Hooks

CasualPokePlayer commented 1 month ago

Note, GPGX isn't particularly the best example of how to do a waterbox core, if it's at all possible use the standard WaterboxCore base class (see PicoDrive, TIC80, uzem, as simple examples of this being used)

SergioMartin86 commented 1 month ago

Ok, opening this PR for review. This is a summary of what's been done:

Emulation works correctly for several games I tested (including Myst, which apparently a2600hawk does not support)
Video is rendering correctly
Audio is also playing correctly, except for the first few frames or so (try Frogger (USA).a26)
Statable interface correctly implemented
Memory domains correctly showing
Digital Controllers working

To-Dos:

Analog controllers (paddle) not currently supported
CPU hooks and debug functonality not current implemented