clear
power on
regs

op a0 55

# IY should now be set to 55
test iy = 55

op c8

# IY should now be set to 56
test iy = 56

# Wrap and Zero case --------------
power on

op a0 ff

# IY should now be set to ff
test iy = ff

op c8

# Should be: IY=0, Z=1
test iy = 0
test z = 1

# Negative case --------------------
power on

op a0 ef

# Clear S with ACC
op a9 01

# Should be: IY=EF, S=0
test iy = ef
test s = 0

op c8

# Should be: IY=F0, S=1
test iy = F0
test s = 1


save verify_C8.txt