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125 Commits

Author SHA1 Message Date
Adrian.Conlon
61ae382a98 A different approach to audio handling. Just holding data at the moment. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-17 22:19:07 +01:00
Adrian.Conlon
462b82add6 Add some new events for sound updates (TBC) 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-17 09:50:20 +01:00
Adrian.Conlon
ea3f154989 Preliminary support for 16 row high sprites. Don't think it's working! 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-17 09:46:28 +01:00
Adrian.Conlon
07d44966ac Another stab at keyboard scanning. Better, but not perfect... 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-15 21:25:08 +01:00
Adrian.Conlon
9190b29b4b Remove some unused memory event handlers. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-15 18:56:05 +01:00
Adrian.Conlon
26e99f6934 Whoops: broke sprite transparency and flipping! 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-15 18:29:47 +01:00
Adrian.Conlon
f4c8496882 Generalise tile rendering code for background and sprites. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-15 18:23:02 +01:00
Adrian.Conlon
e40ee1d7a6 X/Y sprite flip implemented. Easy! 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-15 17:48:06 +01:00
Adrian.Conlon
94fe1a7494 Add support for sprite transparencies. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-15 17:37:57 +01:00
Adrian.Conlon
f6181400c4 First stab at sprites. Lots of bugs! 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-15 17:25:55 +01:00
Adrian.Conlon
2060989ac7 Add keyboard interrupt handling (TBC) 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-15 12:35:16 +01:00
Adrian.Conlon
e1b838355e Add P1 (i.e. keyboard) support. Interestingly, gets Tetris *much* further. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-15 00:53:56 +01:00
Adrian.Conlon
32d1085ecb Start properly implementing IO status register read/write. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-14 23:48:49 +01:00
Adrian.Conlon
a77e57e5fc Add pre/post read/write memory events. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-13 23:12:47 +01:00
Adrian.Conlon
2c92e4d389 Updated for appveyor library location compatibility. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-12 13:30:56 +01:00
Adrian.Conlon
3bd647b789 Correct a couple of memory map elements. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-07 20:11:57 +01:00
Adrian.Conlon
c5c842a70b Correct some rom initialisation/loading issues. 2017-09-07 12:23:06 +01:00
Adrian.Conlon
129286f1a7 Ensure LR35902 fuse tests run successfully to completion. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-07 01:15:28 +01:00
Adrian.Conlon
57cfd79c44 Tidy header file usage a little. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-01 16:41:50 +01:00
Adrian.Conlon
9b43b74c28 Rationalise some of the reset/initialise logic across pProcessor implementations. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-01 16:01:40 +01:00
Adrian.Conlon
ef3203d943 Tidy raster line execution a little. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-01 13:24:41 +01:00
Adrian.Conlon
e42484d35c Better DIV implementation. Incremented as a word and exposed as the high part in the DIV register. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-01 13:17:20 +01:00
Adrian.Conlon
a2784ae02d Timers can (of course) expire during CPU instruction execution. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-31 17:21:44 +01:00
Adrian.Conlon
711d4f4384 Add some GB IO register information in the disassembler. Nothing fancy! 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-31 17:18:38 +01:00
Adrian.Conlon
1eb127ed72 Add power support to processor base class. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-31 12:13:00 +01:00
Adrian.Conlon
20c126adfc Correct a couple of cycle counting issues. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-31 01:19:51 +01:00
Adrian.Conlon
e70686c5de Some more rationalisation of processor execution/stepping strategies. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-30 23:17:34 +01:00
Adrian.Conlon
5fe3d458df Correct F8 carry flag usage. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-29 22:36:26 +01:00
Adrian.Conlon
daab0484c3 Use corrected LR35902 library to run test loop. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-29 22:35:56 +01:00
Adrian.Conlon
ea033d3984 Move a fair amount of code from the GameBoy implementation into the EightBit library for the LR35902 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-29 22:23:32 +01:00
Adrian.Conlon
9da58a5af7 Merge branch 'master' of https://github.com/MoleskiCoder/EightBit 2017-08-29 17:28:24 +01:00
Adrian.Conlon
8033948aef Very small argument tidy. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-29 17:26:41 +01:00
Adrian.Conlon
ec15a2c90c Correct SP arithmetic methods: All Blargg CPU tests now pass. Hurrah! 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-28 23:04:25 +01:00
Adrian.Conlon
329fd269ed Share some more code from the 6502 processor implementation. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-28 18:52:48 +01:00
Adrian.Conlon
73a34f4fae Start a more careful documentation of the I/O registers. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-26 09:46:53 +01:00
Adrian.Conlon
4cbab14750 Remove unused StatusFlags.h header. Not sure why that was still there! 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-25 22:37:10 +01:00
Adrian.Conlon
c6df5ba775 Merge branch 'master' of https://github.com/MoleskiCoder/EightBit 2017-08-25 10:33:31 +01:00
Adrian.Conlon
246e6431ab Small correction to GB SP instructions passes a little more of the Blargg tests. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-25 10:33:22 +01:00
Adrian.Conlon
01317796c0 Effective address calculation isn't required for Gameboy MBC1 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-24 23:47:28 +01:00
Adrian.Conlon
ae4106ce5a Preliminary MBC1 support. Enough to run cpu_instrs.gb to completion. Hurrah! 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-24 23:23:40 +01:00
Adrian.Conlon
9964070b85 Refactor to allow peek/poke/reference to share a common implementation as much as possible. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-24 11:28:01 +01:00
Adrian.Conlon
448ee2f09f Refactor the MBC implementation to allow a single point of definition. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-24 10:28:31 +01:00
Adrian.Conlon
da96454185 Merge branch 'master' of https://github.com/MoleskiCoder/EightBit 2017-08-23 23:18:52 +01:00
Adrian.Conlon
2c7e32aa78 First stab at implementing MBC1 support for LR35902. Not complete, but all old tests still work. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-23 23:17:45 +01:00
Adrian.Conlon
2c99e09618 Correct compiler type for LR35902 fuse tests. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-23 22:22:58 +01:00
Adrian.Conlon
a087750d9c Interrupt handling doesn't use the current running cycles. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-21 09:34:17 +01:00
Adrian.Conlon
1cf73a8aa4 Correct test runner, to ensure LR35902 tests work correctly. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-20 23:01:49 +01:00
Adrian.Conlon
8716035396 Second stage halt implementation: allow halt state to be exited by an interrupt. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-20 20:09:21 +01:00
Adrian.Conlon
57e48e389f First stage "halt" reimplementation: allow the clock to run during halt, but nothing else. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-20 19:44:57 +01:00
Adrian.Conlon
42b0fdc23d Implement DIV timer (TBC) 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-20 09:52:26 +01:00