*BSD News Article 83707


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From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: FreeBSD 2.1.5/EISA/AHA1740 not finding drives
Date: 27 Nov 1996 10:19:07 GMT
Organization: Private BSD site, Dresden
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References: <329B228D.167EB0E7@microware.com> <57fght$le8@raven.eva.net>
  <329B8DFC.41C67EA6@mindspring.com>
Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch)
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Ron Bolin <rlb@mindspring.com> wrote:

> > To my knowledge, FreeBSD doesn't support EISA level triggered IRQs.  The

(side node: it does)

> > only benefit you'll get from EISA is burst DMA at 33 Mb/sec and you won't
> > need bounce buffers for DMA transfers into the physical address space above
> > 16 Mb.

> I ran 2.0 on a Adaptec 1742 system, but when I tried to update to
> 2.1.5 it would never recognize the 1742 controller. This seems to be
> broken, and I am not sure anyone will or has fix it. I posted the

What machine?  There are known problems with HP netservers and their
motherboard AHA1740.

> problem a few months ago when 2.1.5 came out. I configured the ahb0
> driver (not active anymore in the boot floppy) but it would not

The ahb0 driver _is_ active in the boot floppy.  But you don't see it
when booting with -c, since the system now has an eisa0 controller, so
the EISA devices can be auto-configured.

(I used to run an EISA system until very recently, though one with a
Bt742A.)

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)