HP HP-65 - Page 63

Delete Program Step. With the switch set to
W/PRGM, [@] [DEL] (1) deletes the program step denoted
by the program pointer, (2) moves all the following steps
up one step, and (3) inserts a-code in the vacated
bottom position of memory. When switched to RUN,
= acts only ascLx!. [§] can be used to back
up the pointer (after which you reinsert the deleted
codes). If memory is full (i.e., a minus sign shows in
display), [8 [DEL] causes the bottom memory step to be
lost. If the program pointer is at the bottom (i.e., two
minus signs show in display), [@] deletes two loca-
tions.
Pointe r’
O 0
El
RTN [&]{op)
Lost il
Before After After
Pressing Pressing Pressing
[PrRGM Clear Program Memory. In program mode, [§
("PrGM or [ [(PrcM clears the entire program memory
to “no operation” codes (35 01), leaving the pointer at
the top of the memory. In run mode, [fl PrRGM is
equivalent to cLx.
Figure 4-4. Editing Operations (cont.)