On Jul 27 2020, Michael Schmitz wrote: > No, tstb tests a byte operand. btst tests a bit. You can test a bit with tstb as well, as you can see here. Andreas. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."