> From: Tony Duell
> It's one of Don Vonada's laws.
Ah, thank you, thank you, that's the one I was looking for!
I knew _you_'d know it! :-)
> A related one ... came from Professor M. V. Wilkes
That one I _did_ remember (although I couldn't remember if it was Wilkes or
Wheeler - I knew it was one of those Cambridge guys :-), but it's not quite
as pithy as the Vonada one.
Noel
Lately, some list posts have begun appearing in Base 64 format. I read
the list in daily digest mode, and these posts are not converted to
anything sensible, all I get is a long string of hex codes. This is
slightly frustrating, since I have to look up the post in the list
archive if I want to read it, and then it may turn out to be something
that doesn't interest me at the moment. Is there a way of dealing with
this, apart from humbly requesting posters to not post in Base 64?
Jonas
> From: Eric Smith
> The full set from the book (any typos are mine)
Since you'd done all the hard work (typing them in), I uploaded them (less
typos :-), to:
http://gunkies.org/wiki/Vonada's_Engineering_Maxims
Interestingly, there's a typo in the originall: "worse-case". :-)
Noel
Hi folks,
What are people doing for keys for the 8e? Is there a standard key used for all of them? Or do I need to have one made with some specific serial number of my key lock? I did some googling of this issue but wasn't able to get info.
Thanks
Eugene W2HX
Can you take a picture of the side you have ? I have a few
On Dec 1, 2016 11:27 AM, "Josh Dersch" <derschjo at gmail.com> wrote:
Hey all --
Due to a small miracle I now have 8KW of perfectly functioning core in my
long-ill Imlac PDS-1D. The last hurdle is devising a replacement for the
missing display (an X/Y vector display). For the time being I'm going to
attempt to use an oscilloscope, but first I need to build a cable.
The Imlac uses a Winchester connector (14 position) for the display and
while they're not as common these days the parts can still be found so I
thought I was in the clear, but what I failed to notice is that three of
the "pins" (for the X, Y and Blank signals) are actually tiny coaxial
connectors that fit within the Winchester housing (i.e. they're the same
diameter as a Winchester pin).
I haven't been able to track these connectors down anywhere. Anyone have
any ideas?
Failing that, I can always just tap into the backplane to pick up these
signals and ignore the connector on the bulkhead, but it would be nice to
be able to use the original connector...
- Josh
I just started cataloging and dumping firmware my SASI/SCSI disk and tape boards
starting with Xebec. It would be nice to find images for the two alternate fw
proms for the S1410A, particularly the 8k 104793 version so I can compare it to
the one used on the S1420
Hi,
I just acquired a Philips P2000C and I'm looking for a copy of the p-systems
disc(s) to run UCSD Pascal on it.
If someone has a copy of those I would be very happy ;)
-Rik
I acquired a working HP Draftmaster RX (HP part # 7596B).
An awesome machine, 36" roll feed and 8 pens, complete with several pen
carousels, user manual, and hundreds of working pens.
I was very excited to make a splash in the art world with this thing. I did
get it to perfectly draw a 3 color demo page from the front panel.
Thereafter it started displaying errors on the display such as "200" which
means it needs "mechanical calibration".
Thanks to hpmuseum.net I acquired the service manual
<http://www.hpmuseum.net/document.php?hwfile=1292>, which catalogs many
calibrations and self-tests to run from the front panel, including the
aforementioned "mechanical calibration".
So I power up with the appropriate front panel keys depressed to run this
calibration. The paper drive motor starts making noise, but the paper
rollers aren't turning, and the LCD display is blank.
Since that moment, the LCD display is always blank so it is currently a
boat anchor.
It's a terribly sad state of affairs. I have basic electronics and
mechanical skills and an oscilloscope so following the troubleshooting
procedures in the manual I might be able to identify a part to replace. But
of course, parts for sale online are are rare, expensive, used and probably
untested.
Probably better would be lower-level repair of whatever parts are faulty
but that's probably more than I can manage at my skill level.
I'm in Seattle, WA. Is there anyone alive in the pacific NW who will pay a
visit and help me fix this thing? (The only company I found that admits to
working on pen plotters is 360tech in Austin, TX.)
Or someone elsewhere I could ship electronics parts to for test and repair?
Or provide guidance, or help in any form at all?
thanks
M.
Does anyone have a manual for the Microtec META29M meta-assembler? This
was generally used to assemble microcode for microprogrammed systems,
including bit-slice systems. It was apparently compatible with AMD's
AMDASM, but added additional features.
