Posted By
SVS
on 2016-08-30
07:40:11
 |  Re: Does exist a Halt & Catch Fire instruction on 6502/8501?
It is interesting, maybe never explained the reason, that all the possible 6502 codes with "2" as second nibble ($12 $C2, $F2, etc) do halt the processor without any chance to restart.
But there is the exception of $A2 that on the contrary works fine as LDX #nn (a mystery in the mystery).
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