HP HP-67 - Page 167

Program Editing 163
To delete the £} instruction now loaded in step 004 you can use
the B2 key to single-step down to that step number and then delete
the instruction with the 3 operation.
Press Display
Ll 003 35 52
SST 004 32 84
0 003 35 52| The B} instruction,
keycodes 32 84, is
deleted from step 004 and
the calculator displays
step 003. Subsequent
instructions move up one
step of program memory.
If you have modified the program as described above, the HP-67
should now review the contents of the stack only once, just before the
program stops. The calculated value of the hypotenuse is then
displayed.
Slide the Program Mode switch wrrem [ll[[RuN to RUN, and
run the program for right triangles with:
Sides @ and b of 17 and 34 meters. (After reviewing the stack,
calculator displays answer for side ¢, 38.01 meters.)
Sides a and b of 5500 rods and 7395 rods. (After reviewing the stack,
calculator displays answer for side ¢, 9216.07 rods.)
To replace any instruction with another, simply set the calculator to
the desired step of program memory, press @3 to delete the first
instruction, then press the keystrokes for the new instruction.
The editing features of the HP-67 have been designed to provide you
with quick and easy access to any part of your program, whether
for editing, debugging, or documentation. If a program stops running
because of an error or because of an overflow, you can simply slide
the W/PRGM-RUN switch to W/PRGM to see the step number and
keycode of the operation that caused the error or overflow. If you
suspect a portion of your program is faulty, you can use the
GOOMm M operation from the keyboard to go to the suspect section,
Fhen use the operation in RUN mode to monitor every change
in calculator status as you execute the program one step at a time.