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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. |
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test/java/com/loomcom/symon |