On 9/14/05, Jinx <joecolquitt@clear.net.nz> wrote:
>=20
> > 0x00 crossing went undetected ) as decision or better with T0IF flag.
> >
> > DELAY1S
> > movlw -const
> > movwf TMR0
> > bcf INTCON,T0IF
> >
> > btfss INTCON,T0IF
> > goto $-1
>=20
> That would be my preferred way too Dmitriy. I did mention to
> Sean that T0IF could be polled. It has the advantage of the
> rollover being recorded if the code is busy elsewhere at the
> time of the rollover. In Sean's case he has such a slow Fosc,
> very long TMR0 period and s/w that is doing nothing else that
> there is ample time and opportunity to poll T0IF. As you say,
> in this example it's simpler to load a "-ve" count-up-to-00 value
> into TMR0 and then examine T0IF
>=20

Wouldn't it take multiple overflows to count to a second if I switch my OSC=
=20
up to 8Mhz? Wouldn't that involve me using some memory location as a place=
=20
to count the number of overflows? Actually, the only reason my OSC is set s=
o=20
low, is because this is the easy'est way for me to count seconds. I welcome=
=20
any alternative that works at 8Mhz OSC setting with a 1x prescaler setting.

Sean.
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