[coreboot] IDE cable select question

joe at smittys.pointclark.net joe at smittys.pointclark.net
Sat Mar 1 18:38:06 CET 2008

> Well,
> Much to my suprise it looks like pin 34 of the IDE connetor does not
> assert a signal if the cable is 40
**Correction** conductors
> and does assert a signal if the
> cable is 80
**Correction** conductors
> . This is a standard for all motherboards that support
> ATA66/ATA100. Now I just have to figure out where this signal is
> asserted too (maybe a GPIO -> in). Once I figure that out this will be
> easy. I can just tell coreboot to: read ide cable signal, set ide
> cable select register bit to 1.

Thanks - Joe

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