7 Jun
2002
7 Jun
'02
2:03 p.m.
On Fri, 7 Jun 2002, Sipke de Wal wrote:
Problem with the 6502 is that different versions
from different manufacturers had different
undocumented instructions. So for the general
public this was not much of a boon ....
True.
The Z80 situation was much better
Also the 65C02 (the special CMOS version)
als was more reliable in this respect
The 65C02 actually has additional instructions which invalidate former
"undocumented" instructions on the 6502.
Sellam Ismail Vintage Computer Festival
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