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