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Re: A20 delay
Quality Quorum wrote:
>
> On Tue, 14 Dec 1999, VALETTE Eric wrote:
>
> > >>>>> "Joel" == Joel Sherrill <joel.sherrill@oarcorp.com> writes:
> >
> > Joel> The delay is used in two ways:
> > Joel> + A20 real to protected mode transition
> > Joel> + delay once kernel is up
> >
> > Joel> The delay once kernel is up should be able to use a calibrated delay of
> > Joel> any sort.
> >
> > I agree... I also agree for the GateA20 new method...
>
> It seems to me that we have to rename 'delay' defined in ldseg.s into
> something like startup_delay or huge_delay and add new 'delay_1us'
> routine doing calibrated delay for 1us.
>
> Who is going to provide a patch ? I can do it if necessary.
Since you have the only machine which can't use the outb method, :)
it would be greatly appreciated if you would do so.
> > Joel> The one during boot time is really not a delay for time, it is a delay
> > Joel> for the real to protected mode transition to stabilize.
> >
>
> Thanks,
>
> Aleksey
--
Joel Sherrill, Ph.D. Director of Research & Development
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