Setting up a VAXstation
ard at p850ug1.demon.co.uk
Fri Oct 5 16:43:18 CDT 2007
> (particularly printers) when emulation is used. Some may feel joy
> when seeing an original IBM 1620 console typewriter work, but it
> always struck me as something ready to fly apart at any moment
> (particularly when returning the carriage).
That is part of the fun. Picking up all the little bits and figuring out
how to get them back together ;-)
> On the other hand, an emulator can allow you to emulate an exotic
> peripheral that you might not even be able to find. It's a knife
> that cuts both ways.
That depends on whether the priperhal has a sensible mapping to a normal
PC peripheral. For something like a printer, or a graphics display (even
a vecotr display), it does. But an interface to a real-world measuring
instrument probably doesn't. For example I have an interface on one of
my calculators that reads in 9 decades of BCD digits + exponet, sign, etc
infromation. Suppose I link that to a frequency counter. I doubt there's
any common PC peripheral that can measure the frequenct of a 10MHz signal
and gie 8 or 9 digits.
The other thing I make a lot of use of are TTL-level parallel interfaces.
Not printer prots, but things more akin to 'user ports'. Again there's
no common, unviersal, PC equivalent.
> Again, pick your "PeeCee" carefully and you can easily wind up with
> something that not only is more reliable, but much quieter and less
'As reliable', maybe, but I doubt it could be 'more relaile' than many of
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