Subject: IIci '040@80Mhz - Will loan for devlpmt
To: None <port-mac68k@NetBSD.ORG>
From: Glen Stewart <glen_stewart@associate.com>
List: port-mac68k
Date: 04/18/1997 02:38:30
I picked up a Carrera 68040 accelerator for my IIci.  It runs at

80Mhz and was purchased at www.micromac.com.  It could be a real

screamer - if it would boot and run NetBSD or OpenBSD.  )-:



I'd like to loan it out to someone who feels confident that they

can get it running under NetBSD or OpenBSD.  Whoever gets it

going must assure me that they will share their code changes with

both NetBSD and OpenBSD camps so we have an attractive high-speed

solution for the 68k ports.



The cost of the accelerator was $349 (w/FPU).  On the MacOS side,

the makers claim 410% speed increase. I noticed it was definitely

snappier, but didn't have much time to test it extensively there.



The accelerator fits in the slot that the IIci cache card 

normally goes in.  The Mac control panel has options for '040

Medium-speed (with write-through cache) and '040 Fast-speed.

You can also turn the '040 off altogether and just run the '030

processor that came with your system.



I tried both '040 modes and the boot failed just after checking

the video hardware.  The boot error was "Panic: Kernel jump to

zero".  Turning the '040 off from the control panel allows the

system to boot as usual, though with a little message about

unknown memory at a certain address.  I assume it sees the

accelerator there, but doesn't know how to handle it.



I'd love to pay whoever gets this working, but have limited

resources after this acclerator card purchase.  It was a gamble

and I'm hoping it can be made to work.  But contact me if you

think you can make this work, and I'll try to help out to 

compensate you for your efforts.



Thanks!



Glen