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Bug#31618: Frozen boot floppies don't work on Tosh laptop.

On 09 Jan 1999, Adam Di Carlo <adam@onshore.com> wrote:

> [please retain CC to BTS]
> On Fri, 8 Jan 1999 17:57:38 +0000, Enrique Zanardi <ezanardi@ull.es> said:
> > On Fri, Jan 08, 1999 at 04:26:07PM +0000, Tim Morley wrote:
> >>  Package: boot-floppies Version: 2.1.4-1998-12-29 (AKA Current)
> >> Severity: grave
> >> 
> >> README-tecra says: > Tecras and other notebooks, and some PCs have
> >> a problem where they > fail to flush the cache when switching on
> >> the a20 gate (IIRC), which > is provoked by bzImage kernels, but
> >> not by zimage kernels.  > > As kernel-image-2.0.36 (the one used on
> >> this boot-floppies) is a zimage > kernel, there's no need for a
> >> separate rescue floppy, the normal one will > work.
> >> 
> >> However on my Toshiba 490XCDT the main image doesn't work. It just
> >> resets the system about where it should be starting the kernel. the
> >> resc1440tecra.bin from the previos set (2.1.3-1998-12-18) works
> >> fine. Looks like we have been a bit optimistic about new boot
> >> images working 8-(
> > Oh, well, I somehow was expecting that... (I hate laptops. A
> > lot. Please someone donate me one for development). ;-)
> I have a laptop and the non-tecra boot-disk works great.
> > It looks like we still need "tecra" kernel (Herbert?) and floppies.
> Are you sure this is the *tecra* issue and not the Gate20 issue?
> Was anything different on the tecra disks or tecra kernel aside from
> the the compression method of the kernel?
The tecra issue and the gate A20 issue are the same thing. The tecra
kernel used the same compression method of the "normal" kernel (they were
both bzImage, too big for zImage). It was patched to clear the cache and
check that the A20 gate was properly enabled.

Enrique Zanardi					ezanardi@ull.es

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