On Wed, 5 Nov 2008, Riccardo wrote:
On Tuesday, November 4, 2008, at 09:06 PM, Brad Boyer wrote:
On Tue, Nov 04, 2008 at 07:34:41PM +0100, Riccardo wrote:
I have a mac II, but I upgraded the SWIM chip, IIRC. I think I
upgraded only one of the two drives to high density, but that
shouldn't affect you I suppose, since the problem would be the chip.
I'll look in my spare parts bin.
I'm curious about how the chip update appears on the II. Does this
system now show up as a IIx? My understanding is that the upgrade kit
included a new set of ROM chips that include the same bits as the ones
from the IIx. Hopefully there's a logical way to detect this upgrade,
but it would be interesting to know if the update changes the gestalt
ID.
Under Mac 7.1 it gets definitively recognized as Mac II. I definitively
have a SWIM, since one of my two floppies reads HD disks, I checked
Penguin says my gestalt is 6, Mac II
A clue for the MacII is the 68020 CPU + FPU + MMU, AFAIK the only apple
machine with these specs.
One way around this (if we can't probe for SWIM vs. IWM), is install "I
Wish I Were" and set the Gestalt ID to 7 (Mac IIx). It works on my Daystar
'030 Mac II; it may work for you too.
I tried to boot a current 2.6.18 kernel just for fun, it goes past the
letter screen and dumps stack after recognizing the TOBY frame buffer
card and attempting to init it.
I've seen this with more recent kernels. Not sure about 2.6.18. It happens
because a proc file is registered twice by the nubus probe code. It is
only a cosmetic problem, but I have been working on a patch for it.
You may want to try Stephen's daily build,
http://people.debian.org/~smarenka/m68k/kernel/linux-image-2.6.26-1-mac_2.6.26-9_m68k.deb
Riccardo
PS: I didn't use this mac since many months, it first stasrted up, but
then refusedfurther boots with the sad mac sound and no video output.
REmoving components trying to isolate the problem didn't help. When I
put al back together with no luck, a last attempt made it boot. Any
ideas? I see no visible damage on the motherboard, the batteries still
have some juice left...
My machine does that sometimes too. I blame the aging
powersupply/capacitors (either too slow to reach a stable voltage or too
quick to come out of reset) but I'm guessing.
Finn
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