Nobody's mentioned thyratrons (gas-filled triodes/tetrodes) either. I
suspect the thyratrons used in ring counters, etc, were always inert gas
(and not mercury vapour) ones, does anyone know for sure?
-tony
I know we used mercury vapor thyratrons in the Army (Signal Corps) on some
of the triggering circuits on early radars. One of the NCOs made a
beautiful chrome chassis and mounted 8 of them on it. Then used them to
drive the spark plugs on an old straight 8 Buick. Was gorgeous to watch
running at night. I still regret not getting some photographs of it. (This
was in 1960 at Fort Monmouth, New Jersey.)
Billy
Hi all,
I have a Kennedy 9100 tape drive, and would like to connect it to my (UNIBUS)
PDP-11/84. The Kennedy has 3 ribbon cables, 2 smaller ones and a bigger one,
that end with IDC connectors.
What interface should I be looking for to hook it to the UNIBUS ?
The Kennedy 9100 manual (from bitsavers) does not tell about that ...
thanks,
- Henk, PA8PDP.
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Thank you for your cooperation.
Your mystery chip is clearly Motorola, a very good guess is that it's a 6845
CRT controller chip, or at least a derivative thereof.
Message: 7
Date: Sun, 19 Mar 2006 20:28:15 -0800 (PST)
From: Chris M <chrism3667 at yahoo.com>
Subject: another mysterious chip
To: tech <cctech at classiccmp.org>
Message-ID: <20060320042815.79263.qmail at web61019.mail.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
First line: circle possibly with M in it, INMOS B.
Second line: IMSG170S35 (pretty sure). Third line:
8611 - obviously date of manufacture. Chip has a gold
cover, and is present on a dual 8-bit graphics card
made by Vermont Microsystems, 80188 on board (similar
to an IBM PGA card). Works in a P166MMX DTK mobo...but
not in my IBM PC/AT. And yer know what else...it
emulates CGA (pretty well seemingly, but only tested
it with QBasic thus far). O for the drivers to access
its wild advanced modes *snifful*.
I'm sure many of you realize this, but maybe it will be news to some
like it was to me :-)
You can search the Computer History Museum's collection at
<http://archive.computerhistory.org/search/>. They sometimes have
promotional pamphlets available as PDFs, promotional photographs as
JPEGs and photographs of items in their collection (hardware) as JPEGs.
Searching for 'terminal' taught me about a whole bunch of
manufacturers and models of terminals that I'd never heard of before,
some with pictures!
--
"The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ:
<http://www.xmission.com/~legalize/book/>
Pilgrimage: Utah's annual demoparty
<http://pilgrimage.scene.org>
>From: "Chris M" <chrism3667 at yahoo.com>
>
>I just obtained a rather beautiful specimen (specimen
>- an Italian astronaut LOL LOL). So I hearby announce
>my desire to network with other owners of the same.
>And does anyone know if an 8088 add-on was ever
>offered?? It seems like the most natural thing to me.
>
Hi Chris
I have one of these. I've been exploring my machine.
As far as I know, they never did a 8088 version. The
68K is really a nice machine though.
Jeff Rasken's site has pdf's on the user manual's.
There are also several pages describing how to get to the
Forth underneath. There are all kinds of things you can
do with the Forth, including writing your own special
functions. You can even evaluate Forth expressions
in your text. A handy place to put your source.
One of the sites describes using " see " to decompile
Forth words. So far, I've not found such a word in
my machine. If you find it in yours, I'd really like
to know. You could do a " see see " for me.
The Forth is a tokenized Forth. The most common words
are 1 byte tokens. There are a number of words called
trier1, trier2 ... that are used to extend to 16 bit
tokens.
There is a way to find the token of any particular
forth word. As an example, " ' find . " will display
the token for the word find. If you do " ' find +table @ . "
you'll get the pfa/cfa of the word find.
I'm almost ready to write my own word see but I'm stuck
at one point. I've found the dictionary and there is
a 16 bit value attached to each entry. I suspect that
this somehow is used to locate the token. I've not
yet found out how this works.
I've started a little by hand decompiling the word find.
The word find must know how to use this value to get
to the token. Words like ' use the word find inside.
It is slow but not to bad. I used the word words in
my text to dump the dictionary names and then wrote
a keyboard macro to take each word and do a " ' SomeWord . ".
It also cleans up the extra ' and .
I use the word dump to look at the cfa/pfa and get the
token there. I then search for that token in my text.
I can only work on this during the weekend so I'd just
started before I needed to go to sleep.
My main reason for doing this is that I'd like to write
a different printer driver to use my HP 3si. I don't
have any Canon printers that it normally uses.
I'd also like to here from other Canon Cat owners.
Dwight
Wai-Sun Chia wrote:
Anybody in this list has either an IMP or a TIP? Or even an unmodified H516?
----------------------------
Assume we are talking about the National Semi IMP from early 70's? If so, I
recently gave Al K. a contact in the Bay area who has an IMP running in his
den and has done so since the early days of the Homebrew Computer club. He
also has a lot of software, custom interfaces and spares.
He was at the last VCF in Mountain View but was more fascinated with the
museum.
I promised to not print his name - he is a private person. But perhaps Al
has been over to see him?
Billy
>Looking at the PCB, it has a 50-pin and a 20-pin connector.
>Is that SA4000?
SA1000
SA4000 was the 14" drive.
AED sold these drives in their WINC08 RL02 emulating drive product.
Compupro sold them as well.
There was an ANSI standard number for the interface, but I don't
remember
the number off hand.
I'm very willing to do the scanning and create indexed PDF files of the
available MicroCornucopia editions.
I already have 1-4, but would love to borrow 5-26 & 37-53. If Roy can locate
the missing 27-36 it would be great.
I'd be glad to pay round trip postage costs, and return a full set on CDR of
the files to anyone willing to help out by loaning issues.
I'd also eventually like to collect up the user group disks that were
distributed. I found #13 on the web (which ironically starts out with 4
files I submitted back in the 1980's when I was living in Philadelphia!).
I also have the PFM3.3 source code here and believe I have a bootable CPM
disk that I can add to a CDR.
Dave Dunfield's site also has .IMG files of disks for the Big Board I.
I have the original documentation and schematics I can include.
And I have a neat "CRTMON" that was a debugging monitor that doesn't use any
dram to boot. It used the CRT static memory for the monitor, letting you
debug problems with the DRAM section.
Many thanks to anyone who can help. I'd hope to eventually get them up on
the web to share.
- Gary
"Chuck Guzis" <cclist at sydex.com>
Okay, Nos. 21 and 37 through 53 (the last issue).
"Dave Dunfield" <dave06a at dunfield.com>
Were getting close to a complete set - I've got numbers 1 through 26
"Tom Uban" <uban at ubanproductions.com>
Has someone already scanned or is someone willing to scan the
various BB related articles and post them?
"Roy J. Tellason" <rtellason at blazenet.net>
I have pretty much of a full set of Micro-Cornucopia, but they're in
storage
and not accessible to me until I get those folks paid off...
Does anyone have a manual for this?
Its a video hardcopy unit. Video feeds into the device on a BNC style
connector, it takes a large drum of paper part #016-1603, and has a
copy intensity dial and a copy button as top panel controls.
--
"The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ:
<http://www.xmission.com/~legalize/book/>
Pilgrimage: Utah's annual demoparty
<http://pilgrimage.scene.org>
