Subject: ncr5830 vs ncr53c96
To: Mac-Port NetBSD Mailing List <port-mac68K@NetBSD.ORG>
From: Sean Sweda <sweda@us.itd.umich.edu>
List: port-mac68k
Date: 08/19/1997 18:54:06
FYI: my machine is a IIvx with a Daystar 040 accelerator

I was under the assumption that only the Quadra/Centris machines had
the 53c96, is this correct?  I ask because HDT Primer says that my
IIvx has a 53c96.  I haven't looked at the code on any of the drivers
yet, but how exactly is the mac probed in order to determine what
SCSI chip is there?

Some interesting things I found out:

1) my IIvx will boot using Allen's test kernel, but I have no idea
if there is a speed difference yet

2) a kernel compiled with sbc and ncrscsi commented out, but with
esp uncommented will not boot the IIvx, it can't find the root
device (didn't find a 53c96 to use the esp driver I guess)

3) a kernel compiled using ncrscsi driver, but with esp commented out
panics when attempting to mount the root fs


So, it appears as though I have a 53c96 and that some of the esp code
is being used, although the driver that gets used is ncrscsi.  Can
anyone explain to me what is going on (I've never booted a Quadra,
does it say "esp0 at obio" when booting?).

Sean

__________________________________________________________________________
Sean Sweda                        :            Owner, Motor City Marauders
sweda@us.itd.umich.edu            :   1994 Internet Baseball League Champs
http://www.ibl.org/~sweda         :                     http://www.ibl.org
__________________________________________________________________________