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Author SHA1 Message Date
Preston Skupinski
a9b70c8ad0 Rework the way the cpu object loads and executes code 2011-11-05 21:45:36 -04:00
Preston Skupinski
798dd18835 use the correct p status register bit in DEC accumulator 2011-10-30 22:12:50 -04:00
Preston Skupinski
5f0424fd0b update the TODO now that cycle counting has been added to everything 2011-10-30 00:22:44 -04:00
Preston Skupinski
a1a337f3f6 finish adding cycle counting to the remaining instructions 2011-10-30 00:18:36 -04:00
Preston Skupinski
06d512a668 added cycle counting to even more instructions 2011-10-29 22:30:28 -04:00
Preston Skupinski
5a44410146 numerous more instructions now feature cycle counting 2011-10-29 20:53:32 -04:00
Preston Skupinski
fdaf4dd024 added cycle counting to numerous instructions 2011-10-28 21:15:55 -04:00
Preston Skupinski
f98a4770d7 added cycle counting to numerous instructions 2011-10-19 17:09:57 -04:00
Preston Skupinski
16f32df754 don't remove memory mapped io devices on cpu reset 2011-10-12 15:19:55 -04:00
Preston Skupinski
10cd88d08e Make sure branching can't cause the program counter to go below zero 
or above 0xffff
 2011-10-12 14:39:25 -04:00
Preston Skupinski
833048fefa added numerous tests for stz 2011-10-02 22:33:54 -04:00
Preston Skupinski
03a5217759 make sure lines don't go past column 80 in cpu.js 2011-09-15 13:55:13 -04:00
Preston Skupinski
d902611e9c added decimal mode support for SBC, wrote unit tests to verify that support and updated the TODO 2011-09-04 11:34:09 -04:00
Preston Skupinski
b505f7a50d handle the carry bit properly when in decimal mode for adc 2011-09-03 22:07:44 -04:00
Preston Skupinski
7cee0a3cd1 added decimal mode support for adc with 16-bit memory/accumulator mode and wrote unit tests to verify it 2011-09-03 21:56:39 -04:00
Preston Skupinski
8a1f3364ff Merge branch 'master' of github.com:scud43/JavaScript-65816 2011-09-03 21:22:49 -04:00
Preston Skupinski
990bbdc06c add decimal mode support for adc in emulation or 8-bit memory/accumulator mode and wrote up unit tests to verify it 2011-09-03 21:20:52 -04:00
Preston Skupinski
b4bda09bf6 added more unit tests for LDA(absolute long, absolute long indexed x) 2011-09-02 22:43:47 -04:00
Preston Skupinski
3f23b8f7f7 added some more unit tests for LDA(stack relative and absolute indexed y) 2011-09-01 16:20:34 -04:00
Preston Skupinski
c9a559ab6e added more unit tests for LDA and provided all of the dependencies for running the unit tests so no internet connection is required to use that page 2011-09-01 14:37:34 -04:00
Preston Skupinski
fadcea4c5d added more unit tests for LDA and fixed a bug in the implemention of the direct page indirect mode for LDA 2011-08-31 15:41:27 -04:00
Preston Skupinski
a8f5cc4556 added more unit tests for LDA 2011-08-31 14:22:35 -04:00
Preston Skupinski
d2a9f2589c begin work on unit tests for LDA 2011-08-30 12:39:43 -04:00
Preston Skupinski
3c77ef7dfa update the README 2011-08-30 11:08:17 -04:00
Preston Skupinski
90cf744589 turn MMU into a function object so multiple cpu objects can be used at once and fixes a long standing bug where various unit tests would randomly fail 2011-08-30 10:44:45 -04:00
Preston Skupinski
19c9215181 add basic stepping support 2011-07-18 20:44:55 -04:00
Preston Skupinski
aa2d06839e update the TODO 2011-07-11 19:17:41 -04:00
Preston Skupinski
4a9456f83f added a reset function 2011-07-11 19:04:51 -04:00
Preston Skupinski
5ada2b1daa added a basic interface for interacting with the emulator 2011-07-10 20:43:03 -04:00
Preston Skupinski
dbe014ada1 added STP 2011-06-19 13:13:29 -04:00
Preston Skupinski
5813feaa89 added WAI 2011-06-12 21:23:02 -04:00
Preston Skupinski
8377d8c009 added JSR absolute indexed x indirect 2011-06-12 19:37:07 -04:00
Preston Skupinski
a9e15285cb added JMP absolute indexed x indirect 2011-06-12 18:54:16 -04:00
Preston Skupinski
26fddd8943 added WDM 2011-06-09 20:24:05 -04:00
Preston Skupinski
eff69c28bc added JMP absolute long and JMP absolute indirect long 2011-06-09 20:01:36 -04:00
Preston Skupinski
fe0117a1e0 the cpu object is now passed as the first argument to memory mapped io device interaction functions 2011-06-04 11:36:20 -04:00
Preston Skupinski
a0b9497eb4 added TXS and TSX 2011-06-01 13:17:03 -04:00
Preston Skupinski
4f98a754b7 added TRB and both addressing modes for it 2011-06-01 13:01:16 -04:00
Preston Skupinski
48c6fe5cf9 added TSB and both addressing modes for it 2011-05-30 19:55:59 -04:00
Preston Skupinski
c9d491411b added the rest of the addressing modes for BIT and fixed a bug in a few operations 2011-05-30 19:22:19 -04:00
Preston Skupinski
71552b5720 added BIT immediate 2011-05-30 18:57:20 -04:00
Preston Skupinski
150d6e57d2 added basic memory mapped i/o support 2011-05-30 17:23:00 -04:00
Preston Skupinski
688c2aaaa3 added DEC and INC direct page indexed x and absolute indexed x 2011-05-23 21:37:28 -04:00
Preston Skupinski
4998c9c4dc added operations that still need to be implemented to the TODO and fixed a few errors in the opcode map 2011-05-22 20:07:29 -04:00
Preston Skupinski
bd89ee30e1 added direct page indexed x indirect addressing for operations that support it 2011-05-22 18:35:05 -04:00
Preston Skupinski
382a4b1fc6 added absolute long indexed x addressing for operations that support it 2011-05-22 15:16:44 -04:00
Preston Skupinski
1b1193abbf added absolute long addressing for many operations that support it 2011-05-22 14:13:16 -04:00
Preston Skupinski
e046787510 added direct page indirect long indexed y addressing for operations that support it 2011-05-22 12:52:42 -04:00
Preston Skupinski
c469f3f3ae added direct page indirect long addressing mode for operations that support it 2011-05-22 11:20:02 -04:00
Preston Skupinski
05f31579f1 updated the TODO 2011-05-15 20:21:02 -04:00