Hi Paul,
thanks for your answer and the interesting links...
> > Aha, interesting! Did a short search, but have not been able to
> > find a picture of a casette. Just a pile of paper tape instead ;-)
> >
> > https://images.app.goo.gl/HYqkpYHJUxZeGfiA8
>
> Bitsavers has a collection of G-15
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,
> Izzat a "SPARCBook II"? If so, I have one with 2 drives, and
> the /usr drive is failing. I can replace that but I have no
> idea how to reinstall SunOS/Solaris/Whatever.
I did that in the past using a network install. One will need
ftfp (for kernel) and bootp (for parameters and paths)
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
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
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
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)
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
Hi Peter, sorry I have no items to pary with. Just trying to preserve the
legacy of the early Rolms by keeping one unit up and running and having some
spares. Anything special you are looking for (a 1666B is for auction on eBay
right now)? Best wishes, Erik.
Am 22. Oktober 2018 12:28:34
ocs
>library a Rolm 1601 Sales brochure with some tech info/parts/prices.
>Heavy
>duty machines for sure.
>Bill
>
>
>On Sun, Oct 21, 2018 at 2:25 PM Erik Baigar via cctalk <
>cctalk@classiccmp.org> wrote:
>
>>
>> Hi Paul, thanks for your reply - good to
Hi Tom, thanks for getting in touch. I got some hardware and documentation from
PWA as they wanted to get rid of all the small portion which remained. I
focused on the 16 bit machines so I have 1602 (forwarded 1602b to a colleague)
and a mse14. All restored to working condition.
With two
Hi Paul, thanks for your reply - good to see that there are still guys out
there who worked with this heavy iron. So you have been in the UK while working
with the Rolm? I guess it was a 1602B or later and pesumably some airborne
early warning stuff? Best wishes, Erik.
Am 21. Oktober 2018
Hi there,
is probably Ken Adam on this list? He was in various roles working
at Ferranti/Edinburgh probably during the 1970ties and 1980ties and
I'd like to get in touch because of his 2013 posting in a yahoo
group...
Hi Andrew,
thanks for your email and great to hear, that you
managed to get hands on a BBK-S4!
On Sun, 1 Oct 2017, Andrew Back wrote:
Have you got PARIX up and running with the Power Xplorer?
Yes, 1.3.something. I even ported the povray to this hardware
using an older pvmpov version. Most
On Fri, 4 Aug 2017, John P. Willis via cctalk wrote:
Does anyone know if there is some physical jumper or OpenBoot parameter
required in order to enable multiprocessor support on a SPARCstation 20?
I do not know of such a switch/jumper. Both my SS2 I upgraded
to 2-CPU and 2*2 CPU did not
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