Seth Morabito
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a01090a16e
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Part-way through the Great Refactoring of Instruction Decoding(tm)
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2010-01-09 19:51:56 +00:00 |
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Seth Morabito
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d25e8325ad
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Updated README to reflect current state of implementation
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2009-01-07 18:29:20 -08:00 |
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Seth Morabito
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ed943687bf
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Implemented Relative mode (branch) instructions and unit tests. Fixed
a bug in the instruction size table.
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2009-01-07 18:26:11 -08:00 |
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Seth Morabito
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f21a0d76e9
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Implemented Absolute,Y addressing mode and unit tests.
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2009-01-07 16:50:36 -08:00 |
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Seth Morabito
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dccf73a6b7
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Implemented instructions using the Absolute,X addressing mode. There's
light at the end of the tunnel now!
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2008-12-29 21:47:19 -08:00 |
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Seth Morabito
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107aca7777
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Implemented Zero Page,X, Zero Page,Y, and Indirect addressing mode instructions, along with unit tests.
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2008-12-29 20:46:48 -08:00 |
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Seth Morabito
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66fc63a36e
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Updated README to reflect current status.
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2008-12-28 23:14:32 -08:00 |
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Seth Morabito
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4b28ab4808
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Implemented Absolute addressing mode instructions. All unit tests pass.
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2008-12-28 23:11:16 -08:00 |
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Seth J. Morabito
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fa142df203
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Updated README to reflect current state.
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2008-12-28 17:55:58 -08:00 |
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Seth J. Morabito
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24458da79e
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Implemented Accumulator mode instructions. Grouped all unimplemented (65C02 and 65816 only) instructions together in a single fall-through area of the instruction decoding switch statement. Added an unimpelmented instruction trap member variable.
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2008-12-28 17:55:02 -08:00 |
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Seth J. Morabito
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c93a03d4f4
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Improved README. Fixed typo in InstructionTable.java
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2008-12-27 21:46:13 -08:00 |
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Seth J. Morabito
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8bcd8a4a75
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Whitespace and indentation canonicalization. That's what I get for using two editors.
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2008-12-27 21:09:47 -08:00 |
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Seth J. Morabito
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d54ad18b17
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All zero page instructions implemented. Tests passing.
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2008-12-27 20:59:10 -08:00 |
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Seth J. Morabito
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ecde55c6b8
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Started on Zero Page opcodes and tests.
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2008-12-27 13:01:07 -08:00 |
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Seth J. Morabito
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de0742f59f
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Started skeleton of Zero Page tests.
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2008-12-27 09:59:49 -08:00 |
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Seth J. Morabito
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7766e76362
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BCD is finally working. I thought that would never happen.
All Immediate Mode and Implied Mode opcodes have been implemented. Next up, zero page!
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2008-12-27 01:43:07 -08:00 |
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Seth J. Morabito
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06ed74e89c
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Fixed the BRK instruction. Added SBC and ADC in Binary Coded Decimal
mode. More unit tests.
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2008-12-26 02:13:11 -08:00 |
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Seth J. Morabito
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b46c4e1bec
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Finished implementing all implied mode instructions, with tests.
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2008-12-23 16:36:09 -08:00 |
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Seth J. Morabito
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f012ba7775
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More implied mode instructions implemented, with tests.
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2008-12-23 16:06:09 -08:00 |
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Seth J. Morabito
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473b47e832
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At long last, implemented BRK. Lots more unit tests for stack processing, as well.
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2008-12-23 02:21:27 -08:00 |
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Seth J. Morabito
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46a5943736
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Implemented set/clear flag instructions. More tests, but SBC is still BROKEN.
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2008-12-20 02:00:45 -08:00 |
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Seth J. Morabito
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088b0823e1
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More unit tests. SBC partially working, but I need to figure out what's going wrong.
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2008-12-15 02:26:13 -08:00 |
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Seth J. Morabito
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1bd59b048b
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Some API changes, lots of test changes.
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2008-12-14 23:43:04 -08:00 |
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Seth J. Morabito
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6443cacdb9
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Implemented ADC
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2008-12-14 01:54:53 -08:00 |
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sethm
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1c6c5fdaeb
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Implemented boolean immediate mode instructions.
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2008-12-14 01:09:23 -08:00 |
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Seth Morabito
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3f74489757
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Renamed project to "Symon".
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2008-12-13 14:59:22 -08:00 |
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Seth Morabito
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9a6a256073
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1. CPU now correctly sets Zero and Negative flags for LDA, LDX, and LDY
immediate mode instructions.
2. Added unit tests for LDA, LDX, LDY immediate mode instructions.
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2008-12-13 01:53:15 -08:00 |
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sethm
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59e5572039
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Process Status Register bits have been added.
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2008-12-13 00:50:14 -08:00 |
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Seth Morabito
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7e36444193
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Added stack functions.
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2008-12-12 01:02:31 -08:00 |
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Seth Morabito
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6915331cca
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Added LDX, LDY immediate.
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2008-12-12 00:45:55 -08:00 |
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sethm
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fb3db6b65f
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Our first test program is running!
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2008-12-12 00:37:54 -08:00 |
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sethm
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7ccde7dc1b
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Reformatting
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2008-12-11 21:47:41 -08:00 |
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Seth Morabito
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d18c1c7f82
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Instruction Table interface.
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2008-12-11 19:33:44 -08:00 |
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Seth Morabito
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8df561d292
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Changed the CPU and Device interface a bit.
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2008-12-11 17:22:39 -08:00 |
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Seth J. Morabito
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a54dbc323d
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Profiling. Made a new directory for exceptions.
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2008-12-11 16:38:39 -08:00 |
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Seth Morabito
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6f678af3df
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Renamed AddressDecoder to Bus
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2008-12-11 11:41:05 -08:00 |
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Seth J. Morabito
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0e212e71e5
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Tests for AddressDecoder. Fixed a bug in isComplete().
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2008-12-10 19:57:38 -08:00 |
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Seth Morabito
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af7743b385
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Much saner implementation of 'overlaps' method.
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2008-12-08 22:12:28 -08:00 |
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Seth J. Morabito
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5bbd72d44e
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Unit testing. MemoryRange work.
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2008-12-08 20:40:27 -08:00 |
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Seth J. Morabito
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541e7c609c
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Fixed configuration for Cobertura. Requires Cobertura 2.2 so the location of the instrumentation file can be found under the 'target' directory
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2008-12-08 14:57:00 -08:00 |
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Seth J. Morabito
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929c7df9b0
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Added Cobertura (formerly jcoverage) plugin to pom.xml
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2008-12-08 14:45:22 -08:00 |
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Seth J. Morabito
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061eeba85c
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There is already an existing project (albeit defunct) named j6502. Name changed to lm6502.
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2008-12-08 14:28:44 -08:00 |
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Seth J. Morabito
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316d0feac6
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Standardized tabs, indent, and whitespace. Finally!
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2008-12-08 14:03:23 -08:00 |
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Seth Morabito
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e3300d3166
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Lots of whitespace changes after importing the project into Eclipse
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2008-12-06 14:39:54 -08:00 |
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Seth Morabito
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a6abc2cd23
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Fleshing out some of the interface for the CPU, Simulator, and Devices.
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2008-12-05 20:00:48 -08:00 |
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Seth J. Morabito
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0163ae47b4
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Nicer prompt
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2008-12-05 18:09:32 -08:00 |
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Seth J. Morabito
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a74322459a
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Command Parser.
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2008-12-05 18:03:00 -08:00 |
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Seth J. Morabito
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7f31c4c950
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Initial project creation
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2008-12-05 16:44:33 -08:00 |
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