6502/EightBit
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27 Commits

Author SHA1 Message Date
Adrian Conlon
2f76e901f9 More tidying of include files for VS2019 compatibility (plus more correct!) 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-05-29 12:18:13 +01:00
Adrian Conlon
003cea0d64 Make 6502 symbols code a little more like normal C++ 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-04 13:27:43 +00:00
Adrian Conlon
4dc0becb74 Refactor the 6502 implementation to be a lot more like the MC6809. Hopefully show bugs in the latter a little more easily. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-31 23:29:13 +00:00
Adrian Conlon
1b2ddd8843 Don't expose the bus via the CPU any more: if a component needs the bus, it should be prepared to hold a reference to it. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-20 20:52:41 +01:00
Adrian Conlon
a8cc289149 Whoops: The "Bus" class *really* isn't allowed to know the "endianness" of the attached processor! 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-27 11:27:33 +01:00
Adrian Conlon
1bf2a9bdfb 6502, Disassembly: Some dump methods can be static 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-01-27 10:13:17 +00:00
Adrian Conlon
9124f10008 6502: Implement some more undocumented instructions (for the Blargg nes cpu tests) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-01-21 10:45:25 +00:00
Adrian Conlon
847e07be86 Add undocumented 6502 instruction RRA. nestest.nes now runs to completion: Hurrah! 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-01-07 23:42:26 +00:00
Adrian Conlon
4d9c0b490a Add undocumented 6502 instruction: SRE 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-01-07 23:16:24 +00:00
Adrian Conlon
65b856611e Undocumented 6502 instruction RLA added. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-01-07 22:50:14 +00:00
Adrian Conlon
5c3568aebd Undocumented instruction: SLO added 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-01-04 22:46:44 +00:00
Adrian Conlon
cb89eb8c82 Add undocumented 6502 instruction: ISB 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-01-04 21:47:50 +00:00
Adrian Conlon
345ab2e2c6 Undocumented instruction: DCP added 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-01-01 21:05:42 +00:00
Adrian Conlon
5f54f61514 Undocumented variant of SBC added. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-01-01 12:55:47 +00:00
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
d4c08b2a25 Use portability macros in the 6502 disassembler. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-01-01 01:16:22 +00:00
Adrian Conlon
eb40c0865e Started added undocumented instructions: first the NOPS (single, double and triple byte variants, including cycle variations). 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-12-31 14:41:00 +00:00
Adrian Conlon
bfa1c07ea4 Change a couple of small formatting quirks in the disassembler to better match "nestest". 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-12-28 14:18:17 +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
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
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
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
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