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HP-41C keyboard less reactive in USER mode?
08-23-2022, 03:22 PM
Post: #1
HP-41C keyboard less reactive in USER mode?
Hi,
I'm still experiencing with my HP-41CX and I've noticed that in USER mode, it is less reactive.
I've assigned a few keys, -, +, x, /, 7, 8, 9, 4 and R/S.

When I press 1/x in normal mode, it is instant. But in USER mode, it takes more than 1 sec.

Is this normal? Because it surely seems strange.
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08-23-2022, 04:19 PM
Post: #2
RE: HP-41C keyboard less reactive in USER mode?
that is normal behavior when your calculator's program pointer points to somewhere in a large PGM. then, your HP-41CX is trying to find labels LBL A .. LBL E and labels LBL a .. LBL e, which are automatically associated with the top row keys. to get rid of the delayed response, do a [GTO] [.] [.] to go to the .END. of the program. that should fix it.
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08-23-2022, 05:23 PM
Post: #3
RE: HP-41C keyboard less reactive in USER mode?
Is this because the key assignment is now stored in program memory which has to searched first? In lieu of going to the main hard coded function.

-Bill
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08-23-2022, 05:42 PM
Post: #4
RE: HP-41C keyboard less reactive in USER mode?
(08-23-2022 04:19 PM)Hans Brueggemann Wrote:  that is normal behavior when your calculator's program pointer points to somewhere in a large PGM. then, your HP-41CX is trying to find labels LBL A .. LBL E and labels LBL a .. LBL e, which are automatically associated with the top row keys. to get rid of the delayed response, do a [GTO] [.] [.] to go to the .END. of the program. that should fix it.

Thanks. This is it.
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08-23-2022, 06:09 PM
Post: #5
RE: HP-41C keyboard less reactive in USER mode?
(08-23-2022 04:19 PM)Hans Brueggemann Wrote:  that is normal behavior when your calculator's program pointer points to somewhere in a large PGM. then, your HP-41CX is trying to find labels LBL A .. LBL E and labels LBL a .. LBL e, which are automatically associated with the top row keys. to get rid of the delayed response, do a [GTO] [.] [.] to go to the .END. of the program. that should fix it.
To get around local labels (A..J, a..e) scan latency, I normally put all these labels nears the top of my programs.
Code:
| 01 LBL "LLDEMO"     | 07 LBL A            | 60 LBL 20           |
| 02 "HELLO WORLD"    | 08 XEQ 20           |    ...              |
| 03 AVIEW            | 09 GTO 99           | 78 RTN              |
| 04 LBL 99           | 10 LBL B            | 79 LBL 21           |
| 05 STOP             | 11 GTO 21           |    ...              |
| 06 GTO 99           |    ...              | 92 GTO 99           |
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