6309 xIM indirect addressing not understood
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mjwurtz commented
A09 doesn't understand instructions like
AIM #$55,[4,X]
or AIM #$55,[,X]
It complains with
error 2: Illegal addressing mode in " AIM #$55,[,X]"
On the other hand, non indirect instructions are working :
AIM #$55,4,X
or
AIM $#55,,X