> I don't know for sure, since I can't see the contents of the SC RAM after
> something has gone wrong, but everytime I accidently ran some code between
> $F000 and $F0FF, when writing was enabled, my program crashed.
How about trying something like this?
F0FE LDX #$3f
0 load ldx opcode and prepare for write of $fe
1 load $3f (maybe this prepares a write of $ff?)
F100 NOP
2 load nop
3 ???
F101 LDA #$F800
4 load lda opcode
5 load low byte from $f102 (poke?)
6 load high byte from $f103 (poke?)
7 load from $f800 (poke?)
Now, inspect f102, f103 and f800 and see if one of them contains
$fe (or maybe $ff).
Later,
Brad
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Bradford Mott (bwmott@xxxxxxxxxxxx) Computer Science Department
http://www4.ncsu.edu/~bwmott/www North Carolina State University
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