Re: [Etherboot-developers] Intel 82559ER question

[BHARATHWAJ M. <mb...@co...>]

On Fri, 21 Dec 2001, Ken Yap wrote:

> >Unfortunately, I am getting timing issues.  For instance, if I keep adding
> >printfs in the do loop in the function do_eeprom_cmd in eepro100.c, the
> >loop advances, if not it doesn't.  Here is my do_eeprom_cmd in eepro100.c:
>
> It could be that the timing requirements of recent chips require a
> larger delay now. You could try increasing the value in udelay (but only
> up to max of about 50, due to the way udelay works). Also have a look at
> what values they're using in Linux drivers these days.
>
> Also udelay relies on the hardware timer. Do you have this timer on your
> motherboard?

Looking at timer.h, I see u use the 8254.  My motherboard has a PIIX4
southbridge, and I see in its datasheet it is the 82C54, I will look into
this..

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