James Tauber
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044c86325c
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added unit tests
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2011-08-07 00:39:53 -04:00 |
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James Tauber
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c101868549
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fixed error in BVS
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2011-08-07 00:39:17 -04:00 |
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James Tauber
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36355def33
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whitespace nit
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2011-08-07 00:37:49 -04:00 |
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James Tauber
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f521fba883
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properly use 0 and 1 not False and True for flags
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2011-08-07 00:30:12 -04:00 |
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James Tauber
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777266f8e1
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implemented non-accumulator version of ROR
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2011-08-07 00:24:25 -04:00 |
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James Tauber
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8f10724a7f
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fixed inverse use of carry in SBC
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2011-08-06 23:53:47 -04:00 |
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James Tauber
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6e709fcc4c
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turns out PLA DOES affect NZ after all
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2011-08-06 23:36:04 -04:00 |
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James Tauber
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b413e9ac64
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renamed load to load_file, added a load to load memory from byte list and refactored loading code
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2011-08-06 23:11:52 -04:00 |
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James Tauber
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309f8277e1
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emulate indirect mode bug in 6502
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2011-08-06 23:02:52 -04:00 |
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James Tauber
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84bdef67cd
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reimplemented CMP, CPX and CPY based on 2006/2007 code
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2011-08-06 22:39:11 -04:00 |
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James Tauber
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6fb2d79cda
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reimplemented ADC and SBC based on 2006/2007 code
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2011-08-06 22:35:45 -04:00 |
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James Tauber
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32120dffef
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apparently PLA does not affect NZ flags
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2011-08-06 22:12:11 -04:00 |
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James Tauber
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3a20c009d9
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little BIT of simplication
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2011-08-06 22:05:15 -04:00 |
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James Tauber
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c6a6071b2c
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cleaned up ASL implementation
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2011-08-06 21:50:01 -04:00 |
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James Tauber
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687b2e345f
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TSX updated NZ flags
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2011-08-06 21:41:52 -04:00 |
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James Tauber
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294d9b027a
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fixed stray comment
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2011-08-06 21:31:25 -04:00 |
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James Tauber
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ebca76c29b
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factored out stack pull/push
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2011-08-06 21:30:58 -04:00 |
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James Tauber
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d6875b2419
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refactored flags to status byte and back
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2011-08-06 21:12:02 -04:00 |
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James Tauber
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20457db088
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slight refactor of update_nz and update_nzc
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2011-08-06 21:05:22 -04:00 |
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James Tauber
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accc0a60bd
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implemented BRK and RTI
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2011-08-06 21:00:50 -04:00 |
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James Tauber
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807f392386
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make further use of addressing mode refactor
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2011-08-06 18:13:56 -04:00 |
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James Tauber
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28fcca6bde
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added zero_page_y_mode
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2011-08-06 18:09:37 -04:00 |
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James Tauber
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3344005fe7
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added wrap-around for zero_page_x_mode
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2011-08-06 18:08:39 -04:00 |
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James Tauber
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fef234f7c0
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refactored addressing mode code
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2011-08-06 18:07:50 -04:00 |
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James Tauber
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a48716a900
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added if __name__ == "__main__" test for mainline
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2011-08-06 17:46:38 -04:00 |
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James Tauber
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55d700fc68
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simplified screen address to col/row translation based on code from 2006
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2011-08-06 17:43:59 -04:00 |
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James Tauber
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80f221b0f5
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initial update from 2001 code
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2011-08-06 16:55:33 -04:00 |