James Tauber
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38736cf243
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refactored update_text and update_lores into a single method
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2011-08-13 07:06:11 -04:00 |
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James Tauber
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9e92bbba97
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display full width of characters
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2011-08-13 06:37:47 -04:00 |
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James Tauber
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588f913eb2
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character heights are really 8 not 9
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2011-08-13 06:36:21 -04:00 |
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James Tauber
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7cc9e8bdad
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implemented LORES graphics
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2011-08-13 06:33:12 -04:00 |
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James Tauber
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4267732d7f
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make display optional (for testing)
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2011-08-13 04:02:43 -04:00 |
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James Tauber
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d11aff5416
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Merge branch 'master' into pygame
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2011-08-13 04:00:56 -04:00 |
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James Tauber
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2e34927e7c
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got tests working again after memory refactor
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2011-08-13 04:00:40 -04:00 |
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James Tauber
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9220ec85db
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ported to pygame and added bit-accurate characters
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2011-08-13 03:52:07 -04:00 |
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James Tauber
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02714dff55
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if writing to text screen row group 3 just skip instead of throwing exception
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2011-08-07 07:03:50 -04:00 |
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James Tauber
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a9904be5b9
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updated README to reflect status and give credit
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2011-08-07 06:52:20 -04:00 |
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James Tauber
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6525a27511
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don't treat indices as signed in indexed addressing modes (ht: ghewgill)
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2011-08-07 06:42:47 -04:00 |
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James Tauber
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4177ae0b25
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consistent whitespace
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2011-08-07 06:29:15 -04:00 |
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James Tauber
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772cdad470
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Merge pull request #4 from ghewgill/master
add disassembler
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2011-08-07 03:22:40 -07:00 |
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James Tauber
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c42c5044fc
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split memory handling into separate classes for RAM, ROM and Soft Switches
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2011-08-07 06:19:49 -04:00 |
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Greg Hewgill
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267d0c8e06
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add disassembler, enable for dump mode
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2011-08-07 21:52:26 +12:00 |
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James Tauber
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e5607052da
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Merge pull request #3 from ghewgill/master
make ROM memory really read-only
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2011-08-07 02:38:51 -07:00 |
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Greg Hewgill
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56e82f7cb6
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don't allow writes to ROM area (this caused the ][+ ROM to hang on boot)
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2011-08-07 21:31:01 +12:00 |
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James Tauber
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108ebd3769
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Merge pull request #2 from ghewgill/master
clean up a few details
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2011-08-07 01:48:04 -07:00 |
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Greg Hewgill
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c9dcee2f08
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fix typos for zero_page_y_mode in instruction dispatch table
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2011-08-07 20:30:44 +12:00 |
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Greg Hewgill
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1925846c3c
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fix dump() function so it works (when uncommented)
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2011-08-07 19:32:39 +12:00 |
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Greg Hewgill
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dde4a83f85
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fix typo in instruction table
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2011-08-07 19:10:30 +12:00 |
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Greg Hewgill
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e961d7e00d
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simplify calculating signed values in adc and sbc
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2011-08-07 18:33:42 +12:00 |
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Greg Hewgill
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5a8b25b771
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only need to allocate 64k of memory
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2011-08-07 18:17:24 +12:00 |
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James Tauber
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ce179a470f
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if curses can't write a character to the screen, just skip it; fixes #1
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2011-08-07 01:34:10 -04:00 |
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James Tauber
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44099ae4f2
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improved implementation of indirect bug across page boundaries including indexed indirects as well
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2011-08-07 01:22:48 -04:00 |
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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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