Those sound suspiciously like errors that a 'non-destructive reformat'
procedure might cure? If you can at least boot from floppy, that drive
sounds like it might be salvageable...
> [nothing happened for a long time, so, I rebooted it
> and waited the usual l...o...n...g time for it to boot again from
> the floppy. Does anyone know if any FastBoot floppies for a PERQ-1,
> more specifically running POS G.2, exist?]
Does anyone actually know what the differences are between the normal
boot floppy and the "fast" boot floppy? Why on earth would anyone sit
through the slow boot once they devised the faster method? It's the
difference between about 45-60 seconds and 10+ minutes! Oy!
> Let's see, what's a 394 error mean...
> "LocateDskHeads entered, about to search for track zero"
Rats! That sounds like what I've been getting - a 153, the "Hard disk
restore failure", only your machine is at least attempting to start up
POS, whereas mine is still dying (it appears) in SYSB.
I've powered up both of my PERQ-1As this weekend, and sadly, neither
will boot. I'm thrilled that the hardware is alive - nothing exploding
or making bad smells, sparks, or nasty sounds - but neither machine
The first unit at least tries, then halts in the 153-158 range. This
is the IOB with v10.17 of the Z80 code, and a 2MB portrait with G.6/S6
on the disk. At least this machine appears to be able to seek either
drive and read in the bootstrap, but the IOB or Z80(?) is failing to
allow the OS to start up.
The second unit, with a similar config but IOB Z80 version 8.7, stops
at 010 and won't get past that with either drive.
Upon visual inspection, I'm concerned that the boards themselves may be
breaking down!!? This is highly disconcerting... I may gently lay one
on my flatbed scanner and post a high-res image to show what I mean...
Considering that all of the magnetic media here - floppy discs, the
Shugart discs, even the PAL and PROM chips - is approaching 25 years
old, is it possible that simply due to their age, these components may
just not be usable anymore, even if (in the case of the rotating
storage) the mechanical parts still work? I have, I think, at least
one replacement set of Shugart boards, but I really think the IOB or
the Z80 subsystem in particular - the only thing common in the errors
I'm getting - is at fault. Damn. I need _one_ of my PERQs to run so
that I can try to diagnose and fix the T2 memory parity problems and
get my streamer working... I have OIO boards available; I could
potentially try to use ODTPRQ to download memory tests directly into
the WCS of my T2 in order to diagnose that box. But if both PERQ 1's
are failing, then I'm completely screwed. :-( Well, unless I can go
find a PDP-11 that works, and... :-)
Anyone got a spare PERQ-1 IOB with v10.17 Z80 PROMs laying around? Or,
does anyone have a burner who could attempt to read in and duplicate a
new set for me, on the very off chance that this is part of the
I'm going to be very, very sad if all three of my PERQs are no longer