1 Nov
2008
1 Nov
'08
5:46 p.m.
Josh,
If you can't boot the OS, you'd be hard-pressed to run a memory test.
As you already suspect, that error strongly suggests a hardware error.
Assuming the memory is not soldered to the motherboard, the first thing
I would do is to re-seat the memory. If that doesn't work, I'd try
removing
some of it, and try different combinations of memory cards to see
if some subset works. Usually memory from that era needs to be
added and removed in pairs, and needs to positioned in the right slots.
--Tim
On Nov 1, 2008, at 5:09 AM, cctalk-request at classiccmp.org wrote:
Message: 26
Date: Fri, 31 Oct 2008 17:24:54 -0400
From: "Joshua Alexander Dersch" <derschjo at msu.edu>
Subject: Memory test util for classic macs?
To: cctalk at classiccmp.org
Message-ID: <E1Kw1UE-0002Q9-LD at sys27.mail.msu.edu>
Content-Type: text/plain; format=flowed; charset="utf-8"
Anyone know of a decent memory test utility that runs on classic
macs (68k
based)?
I have an old Mac Portable that I'm struggling to get an OS on -- I
consistently get "bad F-line instruction" traps when booting from
System 7
disks (floppies and CD-ROMs), which from what I can tell probably
means bad
memory. I'd like to find out if it IS memory, and if so, whether
it's the
onboard 1mb (I hope not) or on the 4mb expansion...
My internet searches have come up dry (I've found stuff for OS X,
and early
PowerMacs, but nothing for the 68k line).
Thanks,
Josh
1 Nov
1 Nov
6:44 p.m.
I can boot the system from System 6 disks (guess its smaller footprint
makes a difference) and my System 7.1 CD if I boot with Extensions
disabled. From there I can run some kind of diagnostic, if I can find
one to run.
I only have one (working) memory card (and there's only one slot in the
Portable). Without it installed I can only boot System 6 (which works
fine even with it installed).
Thanks,
Josh
Tim McNerney wrote:
Josh,
If you can't boot the OS, you'd be hard-pressed to run a memory test.
As you already suspect, that error strongly suggests a hardware error.
Assuming the memory is not soldered to the motherboard, the first thing
I would do is to re-seat the memory. If that doesn't work, I'd try
removing
some of it, and try different combinations of memory cards to see
if some subset works. Usually memory from that era needs to be
added and removed in pairs, and needs to positioned in the right slots.
--Tim
On Nov 1, 2008, at 5:09 AM, cctalk-request at classiccmp.org wrote:
Message: 26
Date: Fri, 31 Oct 2008 17:24:54 -0400
From: "Joshua Alexander Dersch" <derschjo at msu.edu>
Subject: Memory test util for classic macs?
To: cctalk at classiccmp.org
Message-ID: <E1Kw1UE-0002Q9-LD at sys27.mail.msu.edu>
Content-Type: text/plain; format=flowed; charset="utf-8"
Anyone know of a decent memory test utility that runs on classic macs
(68k
based)?
I have an old Mac Portable that I'm struggling to get an OS on -- I
consistently get "bad F-line instruction" traps when booting from
System 7
disks (floppies and CD-ROMs), which from what I can tell probably
means bad
memory. I'd like to find out if it IS memory, and if so, whether
it's the
onboard 1mb (I hope not) or on the 4mb expansion...
My internet searches have come up dry (I've found stuff for OS X, and
early
PowerMacs, but nothing for the 68k line).
Thanks,
Josh
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