clear
power on
regs

op a9 55

# Should be: SP=FF, ACC=55
test sp = ff
test acc = 55

op 48

# Should be: SP=FE, ACC=55, mem[$01FF]=55
test sp = fe
test acc = 55
test m:01ff = 55

# Set the ACC to something else
op a9 01

# Should be: ACC=01
test acc = 01

op 68

# Should be: SP=FF, ACC=55
test sp = ff
test acc = 55

save verify_68.txt