Need help programming HP-35s

[Eddie W. Shore]

It is not easy to tell which lines are message and which are actually commands sometimes. Generally, pressing the EQN is not required until:

1. A message is to be typed. Look for SF 10 (Set flag 10: Left Shift, FLAGS, SF, decimal point key, zero key) and CF 10 (Clear flag 10: Left Shift, FLAGS, CF, decimal point key, zero key) to be nearby.

2. Any equation that looks algebraic, most likely involving registers (REGX, REGY, REGT, REGZ).