Subject: Re: cg4 problems revisited...
To: None <sellis@rohan.sdsu.edu>
From: Izumi Tsutsui <tsutsui@shimada.nuee.nagoya-u.ac.jp>
List: port-sun3
Date: 07/13/1996 12:43:13
In message <19960711.797AC98.136C4@Intrepid.esnet.com> on 07/11/96(21:51:16)
you Scott Ellis <sellis@rohan.sdsu.edu> wrote:
|> |So..I was happy using bw2. ;-) Sometime in the migration from 1.1
|> |to 1.2_Beta (actually happened when it was 1.1a), the autoconfig code
|> |broke. On bootup, when the system got to cg4, initialized it, and was
|> |ready to continue... I'd get an MMU fault, and get dumped to the debugger.
|>
|> I have a Sun 3/60 with cg4. When I built 1.2_Alpha kernel,
|> I also got an MMU fault after initializing cg4.
|> Then I built a kernel with "cc -O" (not "cc -O2"), it works fine.
|
|Wow, that seems to have actually worked. Guess it's a gcc bug?
I think that there are something wrong with m68k gcc optimizations.
There were some programs which didn't work with "gcc -O2" but
they worked fine with "gcc -O".
|The cg4 still doesn't work for me (I'm getting the odd vertical stripes,
|and "big" pixels still), but it doesn't dump core on finding the cg4
|anymore.
|
|I noticed that -O kernels have a tendency to hang when they are loading
|though...never seen it before with -O2 kernels, yet in tonights tests
|with -O kernels, it's hung about 4 times as it initializes (543211+
|12345/ hangs somewhere in that stage).
Umm.. I haven't seen such hangs at boot time. It seems a problem
with ufsboot or netboot.
|Does the color display work on your 3/60?
Yes, the cg4 on my 3/60 works fine. It's a good Xtermnal which has
two screens cg4 and bw2. ;-)
---
Izumi Tsutsui
tsutsui@shimada.nuee.nagoya-u.ac.jp Nagoya University, Japan