[coreboot] Hosed ms-7032, I foolishly flashed the bios with a .700

Carl-Daniel Hailfinger c-d.hailfinger.devel.2006 at gmx.net
Thu Jun 11 15:30:12 CEST 2009

On 11.06.2009 15:12, Morgan Reed wrote:
> On Thu, Jun 11, 2009 at 22:51, Carl-Daniel Hailfinger
> <c-d.hailfinger.devel.2006 at gmx.net> wrote:
>> Desolder the ID2 pin of the old chip from the board and connect it to
>> VDD (3.3V). Solder the new chip (with the correct BIOS image) on top of
>> the old chip, but connect ID2 of that chip to ground.
> I've just done some reading, that should do the trick. Except
> according to the datasheet you should use ID3 for this not ID2,
> essentially the ID pins control where in the 8M of space the contents
> of the chip gets mapped, by using ID3 you can flip your 4M ROM between
> the top and the bottom of the address range, as I say I've not looked
> too deeply into LPC but my reading of the datasheet suggests that if
> you use ID2 you will end up with half of your two ROMs overlapping.

Ah, the common trap of MByte vs. Mbit. The chips are 4 Mbit (512 kByte),
so there won't be any overlap.
Besides that, the Winbond datasheets explicitly mention that ID3 is not
used by the chips unless I'm totally misreading them.



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