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From: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com>
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Subject: Re: NCR assertion fails?
To: se@MI.Uni-Koeln.DE (Stefan Esser)
Date: Sun, 30 Apr 1995 23:06:45 -3100 (PDT)
Cc: fenner@parc.xerox.com, current@FreeBSD.org
In-Reply-To: <199504301649.AA20198@FileServ1.MI.Uni-Koeln.DE> from "Stefan Esser" at Apr 30, 95 06:49:30 pm
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> Anyway: I guess some comments on PCI setup rules 
> ought to go into the FAQ, I guess:
> 
> 1) Bus master slots required for most devices (which)
> 2) Only PCI IntA used by currently supported PCI cards

This is not true, I have run Bt946's set to IntB, it is *heavly*
PCI BIOS dependent on what you can and can not do here as far
as moving things around!  I am pretty darn sure I can also go
make an NCR810 card work on int B, C or D if I wished to.

> 3) Shared interrupts supported, but shouldn't be used
>    if there are plenty of free IRQs to assigne to PCI
> 4) PCI interrupts are assigned to slots on all currently
>    sold motherboards. Level interrupts are used by all 
>    PCI devices supported in FreeBSD.

Not true, I have run the BT946 is edge mode :-).

> I'll try to find time to write something about this 
> before 2.1 comes out ...
> But if anybody wants to beat me on that :)

Please write it, and send it to me for review.



-- 
Rod Grimes                                      rgrimes@gndrsh.aac.dev.com
Accurate Automation Company                   Custom computers for FreeBSD