Hi there - recently I posted a small video on a rugged
paper tape casette...
https://www.youtube.com/watch?v=O2jnThYsPKc
I wonder whether anyone kows if someone else had the idea
of putting paper/mylar tape into a casette for repeated use
e.g. to load an OS or similar.
Best wishes,
Hi There!
An Indy for instance, is it much faster then a similarly clocked
PowerMac? What about an Indigo 2 IMPACT 1. Does that blow most PMs
away?
Hmm, never used MACs of that generation. Graphics performance of
the SGIs was awesome for its day. Still using an Octane (2*R12k)
from time
Applying a square wave of 15kHz has harmonics up to 100kHz and more.
That means, that the current in these is more than 100 times bigger - BAM!
Additionally, output devices with really fast switching times can trigger
reflections back from the load, and these can potentially expose these
devi
k
Note that VFDs are designed to run motors exclusively. They
approximate a sine wave with pulse width modulated 400 V pulses. DON'T
EVER try to run electronic gear with a VFD, at least without a massive
Yes, that is what I suggested; these filters are called "Sinus Filters"
in the field o
Hi Marc,
Quite impressive indeed! I did not know of these machines.
Thanks for your feedback - yes, although more than 700 made, they
are quite rare. Took almost 10 years to get hands on one of the 920Ms
which where also ahead of time in 1966...
Erik.
''~`
Some additional remarks: The 920M is par of the 900 Series from
Elliott (later Elliott Automation, GEC Marconi Avionics, BAe Systems)
...maybe interesting to note, that apart from the 18bit 920M and
related machines, there is a series of 12 bit ones which have a
simmilar (but not identical) ins
Dear colleagues in vintage computing ;-)
In the last years there has been substantial interest in the Apollo
Guidance Computer (AGC). So maybe someone might be interested what
happened outside of the United States in the 1960ties: Over the last few
years I restored a 920M computer which was
