Commit Graph

39 Commits

Author SHA1 Message Date
Adrian Conlon
1beee9782f Undocumented instruction: SAX added
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2018-01-01 12:46:21 +00:00
Adrian Conlon
75aece30e3 Undocumented instruction: LAX added.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2018-01-01 12:28:00 +00:00
Adrian Conlon
82fe35891d Linux compatibility changes
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2017-12-30 15:22:27 +00:00
Adrian Conlon
2683999e2c Mild refactoring, no functional change...
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2017-12-30 14:33:48 +00:00
Adrian Conlon
8e4030a5aa Add some performance hints to conditionals.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2017-12-29 14:56:26 +00:00
Adrian Conlon
412a44fafd Correct some page crossing conditions affecting 6502 cycle counts.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2017-12-29 14:49:53 +00:00
Adrian Conlon
0604d5cf22 Actually, all 6502 getWord usage has an invariant high page indicator.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2017-12-29 11:50:24 +00:00
Adrian Conlon
7432e602f8 Correct a 6502 bug in absolute indirect addressing mode (unchanging page on address resolution).
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2017-12-28 16:15:22 +00:00
Adrian Conlon
dcf99bf65d Zero page indirection should completely ignore the high byte of the address line.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2017-12-28 15:16:21 +00:00
Adrian Conlon
81ed53ce11 First stab at a Ricoh 2A03: A 6502 minus decimal mode support.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2017-12-25 23:34:56 +00:00
Adrian Conlon
1edabd79f3 More pinout oriented method of executing instructions (especially interrupts)
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2017-12-10 21:41:48 +00:00
Adrian Conlon
0b6ef3d4dd VS2017 and CPP core guidelines updates
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2017-11-11 15:13:26 +00:00
Adrian Conlon
c292fb552e A whole bunch of consistency changes. No functional changes.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
2017-11-03 22:05:01 +00:00
Adrian.Conlon
c472d70c5c Ensure the MOS6502 unit tests run successfully to completion.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-09-07 00:58:56 +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
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
d710a28526 More consolidation of instruction implementations.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-08-28 21:18:08 +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
59e9adf57c Share more of push/pop implementation across processors.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-08-28 13:19:17 +01:00
Adrian.Conlon
12c9125e9b Correct warning in 6502 implementation.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-08-23 22:30:58 +01:00
Adrian.Conlon
99c2e2a719 Tidy up the 10 addressing mode write set to make it clearer when memory writes occur.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-08-07 21:25:21 +01:00
Adrian.Conlon
aa720c4c12 Pass all Klaus Dormann tests again: correct AM_10 write algorithm.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-08-07 21:02:31 +01:00
Adrian.Conlon
016b3bca59 Switch to a memory read/write event driven model. All tests passing.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-08-06 17:06:48 +01:00
Adrian.Conlon
b6dd48ca63 Some more small clarifications of shared processor implementation.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-25 18:56:43 +01:00
Adrian.Conlon
017b2a6442 Tidy up memory event handling to make it a bit easier to verify read/write events.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-17 21:00:05 +01:00
Adrian.Conlon
13725b7a3c Tidy method casing a little.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-17 15:35:24 +01:00
Adrian.Conlon
4f491f110e Make the 6502 a little more compatible with other processor implementations.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-17 13:46:06 +01:00
Adrian.Conlon
71d213faec Ensure that memory read/write events are triggered.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-16 10:40:38 +01:00
Adrian.Conlon
d522b694bd Make the flag adjustment a little more consistent with the rest of my emulators.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-16 10:05:49 +01:00
Adrian.Conlon
d1bb49143d Reinstate operation timings (TBC)
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-15 23:19:46 +01:00
Adrian.Conlon
3084d2341c New improved disassembler for 6502: much smaller than before.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-14 17:22:28 +01:00
Adrian.Conlon
7ff7ee040f Experimental decoding 6502 interpreter. Runs Klaus Dormann tests to completion.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-13 12:02:44 +01:00
Adrian.Conlon
8c81a27224 "Modernise" the 6502 emulator a little. Not complete, but does successfully complete Klaus Dormann tests.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-11 21:34:01 +01:00
Adrian.Conlon
d3c0494fb3 Switch back to use standard bit encoded fields.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-10 15:51:33 +01:00
Adrian.Conlon
7cd0f324de Better register definitions for the 6502
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-07 09:24:58 +01:00
Adrian.Conlon
f970c45005 Get the loop exit conditions worked out.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-06 21:32:52 +01:00
Adrian.Conlon
7910ada7fa First stab at a running M6502 test suite. Running Klaus Dormann tests
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-05 17:46:02 +01:00
Adrian.Conlon
88d3e4fd47 Initial stab at getting MOS6502 imported to the EightBit library.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-02 22:03:33 +01:00
Adrian.Conlon
105032f08a Dump of all my C++ emulators, only Intel8080 integrated so far...
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-04 21:38:34 +01:00