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1f6e3b054c
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replace bit comparisons with 0 from greater than to not equal
They're both the same and the compiler might have already optimized it
away. It also conveys the message better in my opinion.
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2024-06-16 17:11:51 +05:30 |
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745496ccd1
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add memory mirroring for system and ppu memory
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2024-06-11 15:38:58 +05:30 |
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44273e69b9
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add separate implied/accumulator functions for certain opcodes
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2024-06-11 15:08:53 +05:30 |
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a3189d90af
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add jsr, rti, rts
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2024-06-10 23:27:14 +05:30 |
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3412a03a5e
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implement untested most of stack-related opcodes
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2024-06-10 23:27:11 +05:30 |
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dbb952a52b
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add lsr, rol, ror
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2024-06-10 14:33:12 +05:30 |
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ebdf50cdf3
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implement tay, txa, tya
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2024-06-10 14:28:13 +05:30 |
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454276a50c
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implement sta, stx, sty
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2024-06-10 14:28:13 +05:30 |
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e07d5917a1
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implement se?() opcodes and remove extra 65c02 opcodes
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2024-06-10 14:28:07 +05:30 |
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23008662ce
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implement more instructions
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2024-06-09 22:50:33 +05:30 |
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68ecbce235
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add opcode_mem() function to return memory address and not pre-peek
Of course all of these opcodes need to be tested later...
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2024-06-09 22:15:21 +05:30 |
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c417bf2276
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add memory writing functions
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2024-06-09 16:07:09 +05:30 |
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4db0a8163e
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implement some more instructions and branching?
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2024-06-09 16:02:04 +05:30 |
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858cbfba48
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fix potential adc overflow flag bug
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2024-06-09 15:35:31 +05:30 |
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76b9059b2e
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add blank todo opcode functions based on opcode json
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2024-06-09 13:11:05 +05:30 |
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207c6903f5
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programmatically create switch cases for opcodes based on opcode json
The JSON is from https://github.com/ericTheEchidna/65C02-JSON/ and
saved me a lot of time from writing the cases for each opcode by hand.
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2024-06-09 13:08:31 +05:30 |
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72e29b3d25
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move addressing mode parsing into separate function
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2024-06-08 22:08:51 +05:30 |
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1ac30a026b
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add adc and actually fix peek/16
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2024-06-08 17:41:17 +05:30 |
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bd85b80ba7
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fix peek
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2024-06-04 17:48:34 +05:30 |
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36a8eefd00
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shorten addressing mode enum names
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2024-06-04 16:16:48 +05:30 |
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7245191e86
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add peek(), peek16(), and finish lda()
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2024-06-04 15:54:09 +05:30 |
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10567e0be8
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load program rom into proper offset in memory
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2024-05-24 12:55:44 +05:30 |
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8493837ef9
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implement tax and inx and print status each time
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2024-05-24 12:20:04 +05:30 |
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24ca08a83d
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add lda immediate and brk
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2024-05-24 11:50:08 +05:30 |
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dd757c4324
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start working on 6502 cpu
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2024-05-20 19:39:23 +05:30 |
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