For example i know we can check the interrupt that occurs using BIT followed by a branch (neither affecting registers).
We can also reset the IRQ with CMP or BIT.
One example is generating a triangle wave on Port A..
Code: Select all
BIT DirFlag
BMI
INC PortA
JMP skip1
DEC PortA
skip1 ASL DirFlag
BCC skip2
ROL DirFlag
skip2