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90
Program Editing
Single-Step Viewing Without Execution
You can use
in PRGM mode to single-step to the desired line of
program memory without executing the program. When you switch the
calculator to PRGM mode, you will see that the calculator is reset to line
000 of program memory as a result of executing the [h)
instruction
in the above example. When you press [h] (SST)once, the calculator now
moves to line 001 and displays the contents of that line of program
memory. No instructions are executed.
Slide the PRGM-RUN switch to prem [T -
Keystrokes
Display
000-
Line 000 of program
memory.
M (ssT)
001- 25,13, 11
You can see that the calculator is set at line 001 of program memory. If
you press a recordable operation now, it will be loaded in the next
line, line 002, of program memory, and all subsequent instructions
will be "'bumped'' down one line in program memory.
Thus, to load the [h)
instruction so that the calculator will pause
and display the contents of the X-register:
Keystrokes
Display
™) (FsE)
002-
25 74
Now let's see what happened in program memory when you loaded that
instruction. With the calculator set at line 001, when you pressed
(n)(PSE], program memory was altered ...
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