Seth Morabito
365809459c
Finally handling key presses in the console! (Took long enough, huh?) Added a dead simple console echo example program in 6502 assembly, as well.
2012-10-11 16:08:04 -07:00
Seth Morabito
ed36690e9e
Checkpoint of my Swing UI refactoring. Usable for output-only programs, but only barely.
2012-05-28 22:18:35 -07:00
Seth Morabito
a1d07bf223
First work toward moving to a Swing UI for the simulator.
2012-04-22 20:49:18 -07:00
Seth J. Morabito
00ab8cd9ff
Simulator is just about ready for real-world testing now. Added a simulated
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MOS6551 ACIA at address $C000 which does buffered input and output via the
console. Updated the README with a bit more documentation, and bumped the
version number to 0.1 because I'm impatient.
2010-01-20 18:19:39 -08:00
Seth Morabito
596d05e398
Clearer help output (I hope). Fixed an off-by-one bug in doLoad.
2010-01-17 21:12:24 -08:00
Seth J. Morabito
3d4500cbff
Removed Profiler. It may return in a future release.
2010-01-16 22:22:24 -08:00
Seth Morabito
e157f4a972
More cleanup of the monitor. Added binary file load command.
2010-01-16 21:17:37 -08:00
sethm
a3e57274a2
- Major overhaul of the Simulator control class (where 'main' lives).
...
- Removed the CommandParser class entirely, as the weird dependency between
Simulator and CommandParser never made me comfortable.
- Added a Command inner class to Simulator that handles some of the
command line tokenizing.
2010-01-16 19:22:22 -08:00
Seth Morabito
5c7a98df86
Playing around with the command parser and the Simulator class. Safe to ignore.
2010-01-16 08:56:34 +00:00
Seth Morabito
f174f0312f
* Correct implementation of Indirect Indexed and Indexed Indirect addressing modes.
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* Unit tests for Indirect Indexed and Indexed Indirect.
* Updated copyright dates.
* Started moving to JUnit 4.
2010-01-15 08:20:03 +00:00
Seth Morabito
d858a50f1b
- Updated Cobertura Maven plugin to version 2.3 (threadsafe)
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- Finished refactor of instruction argument address decoding.
Much DRYer now (but could still be DRYer yet).
2010-01-10 02:28:55 -08:00
sethm
4104d6212e
Added Indirect X Mode Tests
2010-01-10 01:18:45 -08:00
Seth J. Morabito
ac88786df7
- Continued refactoring of address decoding.
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- Device read and write may now throw MemoryAccessException, and appropriate
throws clauses have been added throughout the code.
2010-01-09 16:53:04 -08:00
Seth Morabito
a01090a16e
Part-way through the Great Refactoring of Instruction Decoding(tm)
2010-01-09 19:51:56 +00:00
Seth Morabito
ed943687bf
Implemented Relative mode (branch) instructions and unit tests. Fixed
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a bug in the instruction size table.
2009-01-07 18:26:11 -08:00
Seth Morabito
f21a0d76e9
Implemented Absolute,Y addressing mode and unit tests.
2009-01-07 16:50:36 -08:00
Seth Morabito
dccf73a6b7
Implemented instructions using the Absolute,X addressing mode. There's
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light at the end of the tunnel now!
2008-12-29 21:47:19 -08:00
Seth Morabito
107aca7777
Implemented Zero Page,X, Zero Page,Y, and Indirect addressing mode instructions, along with unit tests.
2008-12-29 20:46:48 -08:00
Seth Morabito
4b28ab4808
Implemented Absolute addressing mode instructions. All unit tests pass.
2008-12-28 23:11:16 -08:00
Seth J. Morabito
24458da79e
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.
2008-12-28 17:55:02 -08:00
Seth J. Morabito
c93a03d4f4
Improved README. Fixed typo in InstructionTable.java
2008-12-27 21:46:13 -08:00
Seth J. Morabito
8bcd8a4a75
Whitespace and indentation canonicalization. That's what I get for using two editors.
2008-12-27 21:09:47 -08:00
Seth J. Morabito
d54ad18b17
All zero page instructions implemented. Tests passing.
2008-12-27 20:59:10 -08:00
Seth J. Morabito
ecde55c6b8
Started on Zero Page opcodes and tests.
2008-12-27 13:01:07 -08:00
Seth J. Morabito
de0742f59f
Started skeleton of Zero Page tests.
2008-12-27 09:59:49 -08:00
Seth J. Morabito
7766e76362
BCD is finally working. I thought that would never happen.
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All Immediate Mode and Implied Mode opcodes have been implemented. Next up, zero page!
2008-12-27 01:43:07 -08:00
Seth J. Morabito
06ed74e89c
Fixed the BRK instruction. Added SBC and ADC in Binary Coded Decimal
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mode. More unit tests.
2008-12-26 02:13:11 -08:00
Seth J. Morabito
b46c4e1bec
Finished implementing all implied mode instructions, with tests.
2008-12-23 16:36:09 -08:00
Seth J. Morabito
f012ba7775
More implied mode instructions implemented, with tests.
2008-12-23 16:06:09 -08:00
Seth J. Morabito
473b47e832
At long last, implemented BRK. Lots more unit tests for stack processing, as well.
2008-12-23 02:21:27 -08:00
Seth J. Morabito
46a5943736
Implemented set/clear flag instructions. More tests, but SBC is still BROKEN.
2008-12-20 02:00:45 -08:00
Seth J. Morabito
088b0823e1
More unit tests. SBC partially working, but I need to figure out what's going wrong.
2008-12-15 02:26:13 -08:00
Seth J. Morabito
1bd59b048b
Some API changes, lots of test changes.
2008-12-14 23:43:04 -08:00
Seth J. Morabito
6443cacdb9
Implemented ADC
2008-12-14 01:54:53 -08:00
sethm
1c6c5fdaeb
Implemented boolean immediate mode instructions.
2008-12-14 01:09:23 -08:00
Seth Morabito
3f74489757
Renamed project to "Symon".
2008-12-13 14:59:22 -08:00
Seth Morabito
9a6a256073
1. CPU now correctly sets Zero and Negative flags for LDA, LDX, and LDY
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immediate mode instructions.
2. Added unit tests for LDA, LDX, LDY immediate mode instructions.
2008-12-13 01:53:15 -08:00
sethm
59e5572039
Process Status Register bits have been added.
2008-12-13 00:50:14 -08:00
Seth Morabito
7e36444193
Added stack functions.
2008-12-12 01:02:31 -08:00
Seth Morabito
6915331cca
Added LDX, LDY immediate.
2008-12-12 00:45:55 -08:00
sethm
fb3db6b65f
Our first test program is running!
2008-12-12 00:37:54 -08:00
sethm
7ccde7dc1b
Reformatting
2008-12-11 21:47:41 -08:00
Seth Morabito
d18c1c7f82
Instruction Table interface.
2008-12-11 19:33:44 -08:00
Seth Morabito
8df561d292
Changed the CPU and Device interface a bit.
2008-12-11 17:22:39 -08:00
Seth J. Morabito
a54dbc323d
Profiling. Made a new directory for exceptions.
2008-12-11 16:38:39 -08:00
Seth Morabito
6f678af3df
Renamed AddressDecoder to Bus
2008-12-11 11:41:05 -08:00
Seth J. Morabito
0e212e71e5
Tests for AddressDecoder. Fixed a bug in isComplete().
2008-12-10 19:57:38 -08:00
Seth Morabito
af7743b385
Much saner implementation of 'overlaps' method.
2008-12-08 22:12:28 -08:00
Seth J. Morabito
5bbd72d44e
Unit testing. MemoryRange work.
2008-12-08 20:40:27 -08:00
Seth J. Morabito
061eeba85c
There is already an existing project (albeit defunct) named j6502. Name changed to lm6502.
2008-12-08 14:28:44 -08:00
