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PICList Thread
'prescaler'
1998\02\10@212859 by Bill Rininger

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I am currently using a 16c84 and want to set the TMR0 prescaler to 1:1.
It only allows 2:1.  Does anybody know of a PIC that alllowsthe 1:1
for a timer? or a trick to emulate a 1:1 timer?
 
Thanks
Bill
 

1998\02\10@235132 by Andrew Warren

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Bill Rininger <spam_OUTPICLISTTakeThisOuTspamMITVMA.MIT.EDU> wrote:

> I am currently using a 16c84 and want to set the TMR0 prescaler to
> 1:1. It only allows 2:1.  Does anybody know of a PIC that alllowsthe
> 1:1 for a timer? or a trick to emulate a 1:1 timer?

   Bill:

   All the PICs can be set for a 1:1 TMR0 prescaler, and there's no
   real trick to it... You just have to read the data book closely.

   To set the TMR0 prescaler to 1:1, write a "1" to bit 3 of the
   OPTION register.

   -Andy

=== Andrew Warren - .....fastfwdKILLspamspam@spam@ix.netcom.com
=== Fast Forward Engineering - Vista, California
=== http://www.geocities.com/SiliconValley/2499

1998\02\10@235741 by STEENKAMP [M.ING E&E]

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Hi,

> I am currently using a 16c84 and want to set the TMR0 prescaler to 1:1.
> It only allows 2:1.  Does anybody know of a PIC that alllowsthe 1:1
> for a timer? or a trick to emulate a 1:1 timer?
>
> Thanks
> Bill


If you assign the prescaler to the watchdog, the TMR0 module will
effectively have a 1:1 'prescaler'.

Niki

1998\02\11@163838 by Mike Keitz

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On Tue, 10 Feb 1998 21:28:46 -0500 Bill Rininger <billrspamKILLspamHAYBURN.COM>
writes:

>I am currently using a 16c84 and want to set the TMR0 prescaler to
>1:1.
>It only allows 2:1.  Does anybody know of a PIC that alllowsthe 1:1
>for a timer? or a trick to emulate a 1:1 timer?

To make TMR0 run without prescaler, assign the prescaler to the WDT
instead.  All PICs use this same logic.

_____________________________________________________________________
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1998\02\11@170852 by wlliam cleveland

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Mike Keitz wrote:
>
> On Tue, 10 Feb 1998 21:28:46 -0500 Bill Rininger <.....billrKILLspamspam.....HAYBURN.COM>
> writes:
>
> >I am currently using a 16c84 and want to set the TMR0 prescaler to
> >1:1.
> >It only allows 2:1.  Does anybody know of a PIC that alllowsthe 1:1
> >for a timer? or a trick to emulate a 1:1 timer?
>
> To make TMR0 run without prescaler, assign the prescaler to the WDT
> instead.  All PICs use this same logic.
>
> _____________________________________________________________________
> You don't need to buy Internet access to use free Internet e-mail.
> Get completely free e-mail from Juno at http://www.juno.com
> Or call Juno at (800) 654-JUNO [654-5866]
go to hell

1998\02\12@085020 by wlc1

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wlliam cleveland wrote:
>
> Mike Keitz wrote:
> >
> > On Tue, 10 Feb 1998 21:28:46 -0500 Bill Rininger <EraseMEbillrspam_OUTspamTakeThisOuTHAYBURN.COM>
> > writes:
> >
> > >I am currently using a 16c84 and want to set the TMR0 prescaler to
> > >1:1.
> > >It only allows 2:1.  Does anybody know of a PIC that alllowsthe 1:1
> > >for a timer? or a trick to emulate a 1:1 timer?
> >
> > To make TMR0 run without prescaler, assign the prescaler to the WDT
> > instead.  All PICs use this same logic.
> >
> > _____________________________________________________________________
> > You don't need to buy Internet access to use free Internet e-mail.
> > Get completely free e-mail from Juno at http://www.juno.com
> > Or call Juno at (800) 654-JUNO [654-5866]
> go to hell

When I checked my email this morning, I was shocked to find the above
three-word message sent in my name. I have subsequently learned that
another individual used a machine at another location without
permission. In a moment of careless anger, the wrong message was
selected when the "Re" button was pressed. Please accept my apology for
this most inappropriate and unprofessional use of language.

Sincerely,

W. L. Cleveland

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