Re: [Etherboot-developers] eepro/100 problems

[Marty C. <md...@th...>]

On 4/4/01 3:08 AM Alexei A.Romanenko A.A...@in... wrote:
>I compile ROM image using etherboot-4.6.12 for my network card
>and place it as binary data into  AM27c512-120JI chip (eprom, 512 
>Kbit, 64Kx8)

I would try a 27C256-100, which is a smaller, faster EPROM.  It could be 
that your card is not capable of seeing that size/speed of EPROM.

>when i turn pc on it says nothing refered to booting via LAN
>(first boot from LAN is set in BIOS), although after installing
>bootstrap for LILO, computer boots well.

Get the DOS debug program, and search for the contents of the ROM in 
memory.

(by the way, could someone please send an actual DOS debugging session 
showing how to find EPROM contents in memory?  I am writing documentation 
for Etherboot, and would like to give an example for novices.  I guess I 
could define LPT to COM1 with some DOS mode command and capture the 
output of the serial port in a buffer, but if anyone knows a better way, 
I'd sure appreciate it.)

Anyway, I generally find problems with having ROMs recognized these days 
seems often to have to do with speed.  If the card doesn't insert enough 
wait states, then the CPU may try to read the ROM too fast, and think it 
is not there.

Maybe someone who knows more intimate details can be of more assistance.

Marty

---
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   Name: Marty Connor
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