How to disable auto power off on HP48G

[Alberto]

Hello,

my last program on HP48G takes more than 20m to complete.
Unfortunately, after 10m the calculator shuts off automatically, that's quite annoying.
Does anyone know how to disable (or postpone, as well)
such power off feature?

Thanks

[TW]

Store #FFFFFFFFh into a variable named TOFF. This controls the auto-
off timer. I'd recommend saving the original value and restoring it
after or else your calculator won't auto-power off like normal.

Take a look in the Adavanced Users reference of either the 48 or 50
for info.

TW

[TW]

> Store #FFFFFFFFh into a variable named TOFF. This controls the auto-
> off timer. I'd recommend saving the original value and restoring it
> after or else your calculator won't auto-power off like normal.

Dang, ignore that. I thought it was 48 feature. Turns out it isn't,
but rather a metakernel one.

TW

[Raymond Del Tondo]

"Alberto" <us...@compgroups.net/> schrieb im Newsbeitrag news:JOSdnRGS_ofpASjQ...@giganews.com...

Hello,

you could disable timeout, by setting the value for =TIMEOUT to zero.

This can be done using the SysRPL word CLRTIMEOUT ,
and the word SETTIMEOUT after your program has finished.

However I haven't checked whether CLRTIMEOUT
will be overridden by some other event,
there was no need to leave the machine on for an uncontrolled amount of time.

An other idea could be to check your user program for performance problems.
An HP-48 program runnung for more than 10 minutes may
have some areas for optimisation;-)

HTH

Ray

[MACH]

Hi!, Alberto:

Try with Metakernel 48, from ... http://www.hpcalc.org/details.php?id=4708

Best Regards.
MACH.

[Bruce Horrocks]

From Datafile V17N3p8, courtesy of Bill Butler:

"There is no automatic 10 minute turnoff on the HP48 after ON-D"

Get your copy here...
<http://www.pahhc.org/ppccdrom.htm>
<http://www.hpcc.org>
--
Bruce Horrocks
Surrey
England
(bruce at scorecrow dot com)

[Raymond Del Tondo]

"Bruce Horrocks" <07....@scorecrow.com> schrieb im Newsbeitrag news:91njaj...@mid.individual.net...

> From Datafile V17N3p8, courtesy of Bill Butler:
> "There is no automatic 10 minute turnoff on the HP48 after ON-D"
>

I assume that was meant as an easter joke;-)

ON-D starts diagnostic mode,
so that's not of much use when trying to run a program...

Ray

[Bruce Horrocks]

I have emailed Bill to ask what he meant. In the meantime, I thought the
10 minute timeout only occurs when the calculator is idle, i.e. not when
a program is running.

In which case the OP's problem is not clear.

[Han]

The HP48 does not turn itself off if it is running a program. The only
way it turns itself off is if there is something within your program
that pauses the program. Examples include using WAIT 0, HALT, INPUT,
INFORM, etc

[Rosario Esposito]

.

[John H Meyers]

On 4/26/2011 5:28 PM, Han wrote:

> The HP48 does not turn itself off if it is running a program. The only
> way it turns itself off is if there is something within your program
> that pauses the program. Examples include using WAIT 0, HALT, INPUT,
> INFORM, etc

What if a program links to some device via the serial port, awaiting data?

Also note that a "control alarm" can cause unexpected interruption of a running program;
it is thus not quite suitable for waking up the calculator every nine minutes,
just to make sure it never drops back off to sleep :)

Disabling timeout even when idle would anyway save the pressing of one button,
which nowadays is a big deal, considering how we can auto-sync our phones
(perhaps even with an HP48 emulator onboard)
merely by them being near near a suitably equipped computer with Bluetooth
(or can't we yet do that? -- I can no longer seem
to distinguish perceptions while being awake from while dreaming :)

"Reality is frequently inaccurate" [Douglas Adams]

[r->] [OFF]