On Mon, 11 Apr 2011, Mr Ian Primus wrote:
--- On Sun, 4/10/11, Steven Hirsch <snhirsch at
gmail.com> wrote:
If I try to repair the disk, it tells me to
contact a
service specialist and mentions error 200/662. There's
no error 200 listed in the Lisa repair manual, but 662 is
ProFile parity error. It's hard to believe that, since
the drive passes format and certify on an Apple /// and
MacWorksXL on the Lisa has no problem with it.
Are you running MacWorks on the same Lisa, or a different one?
Same machine.
And can
you write to the disk running MacWorks?
Yes, it intializes the ProFile and copies itself. I can then boot
MacWorks from the hard disk, so I know it was really written.
Does the Profile pass the test
when running LisaTest?
No, it fails under LisaTest with the same odd symptoms: No sign that it's
even trying to access the disk! Just goes away for a a bit and announces a
fail. I never see the ProFile light flicker.
I'm starting to wonder if Lisa OS has stricter timing or perhaps checks
parity while MacOS does not.
Is this the same Lisa that had battery corrosion
on the mouse connector?
Yes, but I've cleaned that up since. Are you thinking that something
adjacent was also damaged? If so, why does it work under MacWorks for
both read and write. I'll take another very close look at the connector.
What kind of cable are you using to connect the
Profile to the Lisa?
I've had issues in the past with the crimp style ribbon cables coming
apart at the edge and causing flakey behavior.
I've tried two different ribbon cables, plus a nice shielded ProFile
cable.
I would double check by popping the card cage out of
the Lisa and using
a meter to check between the solder points on the board and the other
end of the cable - make sure you don't have any corroded pins. Of
course, pin 7 won't have continuity, since that's the key pin.
Yes, I agree with that completely. Will start ringing it out this
evening.
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