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On Wednesday, September 27, 2023 at 1:01:40 PM UTC-7, Dave McGuire wrote:
(snip regarding the Living Computer Museum)
> > I believe the VAX runs on emulated disk, though.
> Most everything there was emulated, it seems.
Last I remember, the Xerox Sigma 9 was running on real disks.
When it was open, the museum computers were running 24/7.
Even when they were new, those drives were never expected
to do that. Systems I remember, had a maintenance time every
morning. And disks were often backed up every day.
As well as I know it, whatever is running now, is running unattended.
At some point, though, it isn`t obvious what emulated means.
I a MicroVAX an emulation of the 11/780?
In any case, yes, more is now emulated than when the museum
was open. The Toad2 was designed as competition for DEC,
not as a later day emulator.
Does it matter if it is hardware emulation or software emulation?
I remember knowing about RP07, and not RM05.
> > Keeping old disk drives running is much harder than old CPUs.
> It is, but we do it at LSSM. It`s not like it`s impossible.
Running continuously for 20 years might be, though.
Oh, one more thing.
One way that LCM does floppy disks, is to make a bit image
backup. That is, not decode the bits, just record where they are.
That works even if it is an unusual low-level format.
That might be the best way to read old RM05 packs, too.
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