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needs 2 bytes for address from indirect addressing? #3

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GoogleCodeExporter opened this issue Mar 23, 2015 · 0 comments
Open

needs 2 bytes for address from indirect addressing? #3

GoogleCodeExporter opened this issue Mar 23, 2015 · 0 comments

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@GoogleCodeExporter
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see emu/testvectors/idxbug.6502

after all the loads/stores, memory looks something like:
0030: 70 71 72 00 00 ...
...
0070: C5 7C A1 00 00 ...

6502 Simulator (from internet) gives result A=0xA1
(specifically, after the AND instruction, A=0)

python emulator gives result A=0x5C (A=92)
(specifically, after the AND instruction, A=0x93&0xC5)

I think this may be a problem with idy addressing as well

Original issue reported on code.google.com by [email protected] on 13 Mar 2008 at 3:13

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