I have absolutely zero experience in emulator development so even if I did make it work, it probably wouldn't be pretty. I may take a look though assuming I can find some good references. I have a metric ton of C64 games in T64 format rather than TAP.
On another note, does C64Hawk support the T64 format? It's not part of the filter when loading roms, but the core recognizes T64 files as valid files. I can't get it to run any games so I'm guessing it doesn't work? When loading a T64 file, the C64 RAM is populated, but RUN doesn't launch the game. Edit: Looking at the code it looks like the framework is there for T64 files but it doesn't actually know how to handle them. Any plans to support T64 in the future?
Sameboy runs the SGB at the SGB1 clock speed, whereas BSNES runs the SGB at the original clock speed. Is BSNES emulating the SGB2?
I've made some more commits to GBC, and finally fixed the long open bug with Sachen Beast Fighter. It turns out the GBC Warriors of Might and Magic was doing the same thing as Beast Fighter, so it was pretty easy to work out what the intended behaviour was.
Thanks for the hard work! Are you gonna implement a hacky support for the GBA mode, or are you gonna wait for the actual bios dump?
Over the past few days I've been expanding GBHawk to have GBC support. It's now in a fairly presentable state so I thought I'd make an announcement in case people want to try it out. It's still a bit buggy but I'm hoping to iron things out over the next couple days. All of the grunt work of sorting things out between GB and GBC is done though, and all of the basic GBC functions are in there (except IR port.)
Originally I was going to hold off on doing this until some new test ROMs became available to properly fix PinBall Fantasies, but I don't see them yet and I wanted to get started on GBC while I have a little time to focus.
GB is still the primary accuracy component of the core, but I'll be working on GBC accuracy as the core becomes more mature.
In terms of performance for me it currently runs about 130 fps, while the GB side runs around 210. I think 130 isn't too bad considering double speed mode, HDMA, and colorizing things makes the core do considerably more work. Maybe some optimizations here and there can improve things a little more, but Gambatte is still 10x faster anyway.
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http://hhug.me/gbx/1.0 Someone is is making a new file format for Game Boy games. I don't know if it's a good idea if GBHawk could support it.
This is the reason why I wonder, since M.A.M.E is "soon" being integrated, this emulator and this one have not been tested for integration since the "waterbox" exists for BizHawk. And WinUAE seems perfectly suited for such integration, but nothing seems to be planned. We need a CPC emulator as I mentioned earlier, and a Game & Watch emulator, and that would be almost perfect!
unsigned readBios(const unsigned P) {
if (gbIsCgb_) {
if (agbMode && P >= 0xF3 && P < 0x100) {
return (agbOverride[P - 0xF3] + cgbBios[P]) & 0xFF;
}
return cgbBios[P];
}
return dmgBios[P];
}00F2: 18 02 JR 00F6h A:12 B:00 C:00 D:ff E:56 F:c0 H:00 L:0d LY:99 SP:fffe Cy:12985836
00F6: CD D0 05 CALL #05D0h A:12 B:00 C:00 D:ff E:56 F:c0 H:00 L:0d LY:99 SP:fffe Cy:12985848
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00F9: AF XOR A A:43 B:14 C:00 D:00 E:08 F:c0 H:00 L:7c LY:93 SP:fffe Cy:13053504
00FA: E0 70 LDH (#FF70h),A A:00 B:14 C:00 D:00 E:08 F:80 H:00 L:7c LY:93 SP:fffe Cy:13053508
00FC: 3E 11 LD A,#11h A:00 B:14 C:00 D:00 E:08 F:80 H:00 L:7c LY:93 SP:fffe Cy:13053520
00FE: E0 50 LDH (#FF50h),A A:11 B:14 C:00 D:00 E:08 F:80 H:00 L:7c LY:93 SP:fffe Cy:13053528
0100: 00 NOP 00F2: 18 01 JR 00F5h A:12 B:00 C:00 D:ff E:56 F:c0 H:00 L:0d LY:99 SP:fffe Cy:12985836
00F5: CD D0 05 CALL #05D0h A:12 B:00 C:00 D:ff E:56 F:c0 H:00 L:0d LY:99 SP:fffe Cy:12985848
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.
00F8: AF XOR A A:43 B:14 C:00 D:00 E:08 F:c0 H:00 L:7c LY:93 SP:fffe Cy:13053504
00F9: E0 70 LDH (#FF70h),A A:00 B:14 C:00 D:00 E:08 F:80 H:00 L:7c LY:93 SP:fffe Cy:13053508
00FB: 04 INC B A:00 B:14 C:00 D:00 E:08 F:80 H:00 L:7c LY:93 SP:fffe Cy:13053520
00FC: 3E 11 LD A,#11h A:00 B:15 C:00 D:00 E:08 F:00 H:00 L:7c LY:93 SP:fffe Cy:13053524
00FE: E0 50 LDH (#FF50h),A A:11 B:15 C:00 D:00 E:08 F:00 H:00 L:7c LY:93 SP:fffe Cy:13053532
0100: 00 NOP C64 4 in 1 game cart doesn't work currently, unpaused Bizhawk auto-starts the first game, failing that you can use Joystick port 2 on frame 4 to select the second. Fiendish Freddy's Big Top o' Fun + International Soccer + Flimbo's Quest + Klax (Europe) (C 64 Games System).crt SHA1: 0b35ea869239ed1edbc4b31e6d5da185bf88ea19
Something that came up on IRC today, the TAStudio state sizes for C64 games seem unusually large for a machine which has 64kB RAM. I tested a few roms, they seem to use either 0.26MB, 1.04MB or 4.26MB: From the cartridge ROMs I tested, one didn't seem to work, it just booted into normal C64 startup. Tested on fresh Vice, worked fine: "Leaderboard Golf (1986)(Access Software).crt"