Adrian Conlon
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412a44fafd
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Correct some page crossing conditions affecting 6502 cycle counts.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-12-29 14:49:53 +00:00 |
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Adrian Conlon
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0604d5cf22
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Actually, all 6502 getWord usage has an invariant high page indicator.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-12-29 11:50:24 +00:00 |
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Adrian Conlon
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7432e602f8
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Correct a 6502 bug in absolute indirect addressing mode (unchanging page on address resolution).
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-12-28 16:15:22 +00:00 |
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Adrian Conlon
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dcf99bf65d
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Zero page indirection should completely ignore the high byte of the address line.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-12-28 15:16:21 +00:00 |
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Adrian Conlon
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bfa1c07ea4
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Change a couple of small formatting quirks in the disassembler to better match "nestest".
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-12-28 14:18:17 +00:00 |
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Adrian Conlon
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81ed53ce11
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First stab at a Ricoh 2A03: A 6502 minus decimal mode support.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-12-25 23:34:56 +00:00 |
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Adrian Conlon
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1edabd79f3
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More pinout oriented method of executing instructions (especially interrupts)
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-12-10 21:41:48 +00:00 |
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Adrian Conlon
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0b6ef3d4dd
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VS2017 and CPP core guidelines updates
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-11-11 15:13:26 +00:00 |
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Adrian Conlon
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c292fb552e
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A whole bunch of consistency changes. No functional changes.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-11-03 22:05:01 +00:00 |
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Adrian Conlon
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0d3776d3ec
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Get the 6502 tests running again.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-10-28 13:06:56 +01:00 |
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Adrian.Conlon
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c472d70c5c
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Ensure the MOS6502 unit tests run successfully to completion.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-09-07 00:58:56 +01:00 |
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Adrian.Conlon
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9b43b74c28
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Rationalise some of the reset/initialise logic across pProcessor implementations.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-09-01 16:01:40 +01:00 |
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Adrian.Conlon
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e70686c5de
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Some more rationalisation of processor execution/stepping strategies.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-08-30 23:17:34 +01:00 |
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Adrian.Conlon
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d710a28526
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More consolidation of instruction implementations.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-08-28 21:18:08 +01:00 |
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Adrian.Conlon
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329fd269ed
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Share some more code from the 6502 processor implementation.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-08-28 18:52:48 +01:00 |
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Adrian.Conlon
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59e9adf57c
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Share more of push/pop implementation across processors.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-08-28 13:19:17 +01:00 |
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Adrian.Conlon
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12c9125e9b
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Correct warning in 6502 implementation.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-08-23 22:30:58 +01:00 |
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Adrian.Conlon
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99c2e2a719
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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>
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2017-08-07 21:25:21 +01:00 |
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Adrian.Conlon
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aa720c4c12
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Pass all Klaus Dormann tests again: correct AM_10 write algorithm.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-08-07 21:02:31 +01:00 |
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Adrian.Conlon
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016b3bca59
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Switch to a memory read/write event driven model. All tests passing.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-08-06 17:06:48 +01:00 |
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Adrian.Conlon
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b6dd48ca63
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Some more small clarifications of shared processor implementation.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-07-25 18:56:43 +01:00 |
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Adrian.Conlon
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017b2a6442
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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>
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2017-07-17 21:00:05 +01:00 |
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Adrian.Conlon
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13725b7a3c
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Tidy method casing a little.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-07-17 15:35:24 +01:00 |
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Adrian.Conlon
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4f491f110e
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Make the 6502 a little more compatible with other processor implementations.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-07-17 13:46:06 +01:00 |
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Adrian.Conlon
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71d213faec
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Ensure that memory read/write events are triggered.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-07-16 10:40:38 +01:00 |
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Adrian.Conlon
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d522b694bd
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Make the flag adjustment a little more consistent with the rest of my emulators.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-07-16 10:05:49 +01:00 |
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Adrian.Conlon
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d1bb49143d
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Reinstate operation timings (TBC)
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-07-15 23:19:46 +01:00 |
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Adrian.Conlon
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3084d2341c
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New improved disassembler for 6502: much smaller than before.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-07-14 17:22:28 +01:00 |
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Adrian.Conlon
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7ff7ee040f
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Experimental decoding 6502 interpreter. Runs Klaus Dormann tests to completion.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-07-13 12:02:44 +01:00 |
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Adrian.Conlon
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8c81a27224
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"Modernise" the 6502 emulator a little. Not complete, but does successfully complete Klaus Dormann tests.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-07-11 21:34:01 +01:00 |
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Adrian.Conlon
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d3c0494fb3
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Switch back to use standard bit encoded fields.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-07-10 15:51:33 +01:00 |
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Adrian.Conlon
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7cd0f324de
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Better register definitions for the 6502
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-07-07 09:24:58 +01:00 |
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Adrian.Conlon
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f970c45005
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Get the loop exit conditions worked out.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-07-06 21:32:52 +01:00 |
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Adrian.Conlon
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7910ada7fa
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First stab at a running M6502 test suite. Running Klaus Dormann tests
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-07-05 17:46:02 +01:00 |
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Adrian.Conlon
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88d3e4fd47
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Initial stab at getting MOS6502 imported to the EightBit library.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-07-02 22:03:33 +01:00 |
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Adrian.Conlon
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105032f08a
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Dump of all my C++ emulators, only Intel8080 integrated so far...
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
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2017-06-04 21:38:34 +01:00 |
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