MicroVAX I Diagnostic floppies
derschjo at gmail.com
Tue Dec 19 12:50:39 CST 2017
Hi all --
I'm attempting to resurrect a MicroVAX I (because it's there, that's why)
and the CPU appears to have developed a fault. Microverify passes at
powerup, but I can't get VMS to boot (it dies with a SYSBOOT-F-Unexpected
Machine Check almost immediately). Also tried Ultrix and it dies shortly
after enumerating disks. I know the memory and disk controllers are fine,
and there's nothing else in the system at the moment, so unless anyone has
any bright ideas, I think I'm going to need to debug the CPU.
I'm trying to track down the diagnostics for this machine, no luck so far.
Anyone have a copy sitting around somewhere? I believe there were two RX50
floppies for this purpose, DEC part numbers BL-T856A-DE and BL-T857A-DE.
Thanks as always,
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