Greatly cleaned up the _addrModeError code, next step is removing it altogether. Also removed the _opError function.
Greatly cleaned up the _addrModeError code, next step is removing it altogether. Also removed the _opError function.

git-svn-id: dd14d189f2554b0b3f4c2209a95c13d2029e3fe8@432 96dfbd92-d197-e211-9ca9-00110a534b34

RyuKojiro/v6502