On Sun, 10 Oct 1999, Chris Bohme wrote:
> Hi,
>
> I have tried to boot linux with russell's bootloader via tftp using the
> DEC 21041 card.
> The boot process hangs in dec21041.c in nd_21041_open(), patiently
> spinning on 'while (transdesc[0] & 0x80000000);' and waiting for a
> response from the hardware. I tried two working cards and experienced
> the same problems.
This is a bootloader for what type of system - lets guess an EBSA285 ?
The data sheet for the 21041 (and its cousins) were on DECs web site - but
that was when DEC was DEC, I suspect they are still around there
somewhere.
Now as for why you've got the problem - that top bit is an ownership bit -
the computer sets the bit thus giving the tulip a job to do, when it has
finished it should clear it. The fact that it is getting stuck there
means the tulip is never doing the job.
Get hold of the docs, and then check for tulip error conditions etc before
the loop.
Dave
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/ Dr. David Alan Gilbert | Running Linux on | Happy \
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