HP-65 Top row functions

[Matt Agajanian]

Hi all.

I know turning the 65 off & on restores the top row functions. How do you restore top row functions after clearing program memory?

Thanks

[Gene]

If you have cleared program memory, then just turn it off and back on.

[teenix]

Every time you switch the HP-65 on, the firmware enters a small program for each of the function keys and matches the alternate functions written above them. You can see the steps in PRGM mode with the SST key.

Code:


LBL
A
g    1/x
4
RTN
LBL
B
f    sqrt
9
RTN
LBL
C
g   Yx
5
RTN
LBL
D
g ROLDN
RTN
LBL
E
g X<>Y
RTN

cheers

Tony

[Matt Agajanian]

Hi. I see. Thanks for the clarification.

[Dave Britten]

(08-17-2022 12:39 AM)Gene Wrote:  If you have cleared program memory, then just turn it off and back on.

The other option would be to write that default program to a card. Don't know why anybody would waste a card on that though!

[pauln]

Does the HP-65 copy the default program from the firmware into RAM (and therefore occupying precious steps)?

[AndiGer]

(08-17-2022 05:26 PM)pauln Wrote:  Does the HP-65 copy the default program from the firmware into RAM (and therefore occupying precious steps)?

Yes, it does. Therefore before you start programming you execute CL PRGM to get your full 100 program steps.

[AndiGer]

To save one step if you code carefully we discussed here:
https://www.hpmuseum.org/forum/thread-49...l#pid79096
Label not found - calculation/program starts at top of memory ;-)