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ForumsSega Master System / Mark III / Game GearSG-1000 / SC-3000 / SF-7000 / OMV |
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Brand new Sega SC-3000+SF-7000 Colecovision loader
Posted: Wed Jan 13, 2021 9:11 am
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At the end it works (at least on emulators). Not yet tested on real hardware. Required SF-7000 disk drive. No CV numpad supported (so far).
https://www.facebook.com/groups/sc3000/permalink/3616326221789734/?app=fbl SiRioKD. |
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Posted: Wed Jan 13, 2021 6:00 pm |
Interesting!
How does it works? It is scanning and patching opcodes to remap ports? |
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Posted: Thu Jan 14, 2021 7:44 am |
Changed boot process to initialize SC-3000 hardware. Changed sound ports. Patched interrupt handling (NMI=> INT) routines. Created space into rom to put sg-1000 joystick routines to emulate the CV ones. At the end I wrote a simple multi game floppy loader. |
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Posted: Thu Jan 14, 2021 8:58 am |
I guess my question was, are you loading pre-modded Coleco-to-SC3000 ports? (and creating those conversions is already a substantial amount of work) or is the loader patching/converting them semi-automatically on the fly?
I would be curious to see how far one could go with trying to automate the conversion. I imagine a PC tool could somehow do it. |
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Posted: Fri Jan 22, 2021 2:03 am |
Sounds like a good idea. |
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Posted: Fri Feb 19, 2021 7:41 pm |
Can't wait to try this out. |
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