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Commit Graph

5 Commits

Author SHA1 Message Date
Seth Morabito
e2a1144c7c Update copyright, prep for 1.1.0 2014-08-11 14:16:41 -07:00
Seth Morabito
da8250778e Bug Fixes and Copyright Date Change
The simulator now passes Klaus Dormann's 6502 Functional Test suite for
the first time.

Bug Fixes:

- PHP was not correctly setting the Break bit on the stack copy of the
  processor status, so subsequent PLA's would not set the Break status
  flag.

- The CPU had swapped NMI and IRQ reset vectors, so RTI was failing.

- BRK was pushing PC + 2 onto the stack, instead of PC + 1

- (Zero Page,X) addressing mode did not correctly wrap on zero page
  boundaries.

- The instruction table used for disassembly had addressing modes
  of LDA $B9 and $BD reversed. This did not affect behavior, only
  disassembly of these instructions.

Other:

- Updated copyright date for 2013.

- Started migrating old JUnit 3 style tests to JUnit 4 annotations.
2013-01-01 17:03:16 -08:00
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
8bcd8a4a75 Whitespace and indentation canonicalization. That's what I get for using two editors. 2008-12-27 21:09:47 -08:00
Seth Morabito
3f74489757 Renamed project to "Symon". 2008-12-13 14:59:22 -08:00