RE: 3c90x drivers

[Robert Thompson <robertt@stargate.cs.swau.edu>]

On Fri, 21 Jan 2000, Harasek Gottfried wrote:

|the PNP OS = Y/N just switches the initialisation of the PCI-cards off/on
|respectively. That's just for Windoze, so that the OS can decide if the card
|needs to be (re)initialised when it comes up (e.g. after a suspend or
|reboot). For some 3c cards, it only initialised them to the default
|resources, but didn't enable them.

Ah HAH! Would you happen to know how to enable the card? I suspect that if
the card were enabled, Etherboot would find it and continue on its merry
way. I'm interested in trying this if someone can tell me the magic to
enable the card.



|
|
|
|-----Original Message-----
|From: Robert Thompson [mailto:robertt@stargate.cs.swau.edu]
|Sent: Friday, January 21, 2000 6:28 AM
|To: netboot@baghira.han.de
|Subject: Re: 3c90x drivers
|
|
|
|In regards to PCI PnP:
|I may just be blowing smoke here, but I believe that the BIOS PnP setting
|controls how the PCI BIOS remembers resource assignments between boots. I
|believe it also may control whether the card is automatically assigned
|resources. Frankly, I don't know for sure.
| 
|The reason it came up was that when I boot the Etherboot 3c90x boot code,
|either from floppy, or from my lone 3c905B-TXM, success depends on the
|BIOS being told that I am _NOT_ running a PnP OS. Later I will post a more
|exact description when I am sitting at one of these machines.
|
|Basically, if 'PnP OS'=YES, the bootprom (sleep)s while probing for card.
|If 'PnP OS'=NO, the bootprom finds the card instantly, and continues on
|its way. Just from memory, it appeared that in PnP=YES it detects the
|card, then fails to find it... 
|
|It's late. I'll shut up before i REALLY confuse myself... =)
|
|
|
|On Thu, 20 Jan 2000, Markus Gutschke wrote:
|
||
||> 
||> On 1/20/2000 12:09 PM markus@gutschke.com Markus Gutschke wrote:
||> >For PnP cards, etherboot would have to run full PnP discovery and
||> >configuration. This is not incredibly difficult, but it is inherently
||> >less reliable than accessing non-PnP cards. 
||> 
||> I'm getting confused. For the 3C90x series we're talking about PCI cards,
|
||> which as I understand it are all "PnP".  Could this be some PCI 2.x 
||> compatibility switch setting or something?  If this were ISA cards I'd 
||
||Oh. I thought we were talking ISA/PnP here. For ISA/PnP you need to
||do all kinds of black magic to discover and allocate resources. This
||should not be neccessary for PCI cards, because its the BIOS's job
||to do this for you.
||
||
||Markus
||
||
|
|

-- 
=========================================================================
Robert Thompson <thompson@cs.swau.edu>  Southwestern Adventist University
"My opinions are my own. Want one?"      Department of Computer Science

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