At 12:38 AM 8/20/98 -0500, Doug wrote:
>On Wed, 19 Aug 1998, dave dameron wrote:
>
>> I found a book I would recommend if anyone finds a copy, although I am still
>> getting used to it. It is "Computer Structures: Readings and Examples" by
>> Bell and Newell. It uses strange notation (for me) and even the table of
>> contents is "virtual".
>
>That wouldn't be Gordon Bell, would it? The book sounds familiar, but
>it's not on my shelf.
>
Yes, that's it. My copy was published in 1971, so the HP9100A is one of the
later computers in it. Yes it is neat with the custom CRT and all the boards
stuffed into its case. I guess it sold for about $6000.
-Dave
< I buy the weirdest stuff sometimes. It's a hex keypad that obviously
< belongs to a single-board computer, but not for a CPU I'm familiar with
< CPU-specific labels are AC0, AC1, AC2, AC3, PC, NI, FLAG, and STK0. Wha
< does this keypad belong to? (And does anybody need one?)
My guess would be a DG NOVA/Microflame series. It's the only one I know
of with four accumulators.
Allison
< >Dig up a PDP-11 Qbus book, most had a good description of the bus and
< >bus protocals.
<
< Any suggestions as I'll have to go beg/borrow/steal/buy one. All the boo
< I have either predate Q-Bus or talk about "real" VAX systems (like Massb
< Unibus etc).
Look around they are fairly common. DEC Published them every year from
late '70s through the 80s. Also check with your local DEC down under
as they may have a copy in the office.
On the other hand the ones you have are scarce!
Allison
On Aug 19, 21:26, Sam Ismail wrote:
> Subject: Re: My Web Site
> On Wed, 19 Aug 1998, Richard A. Cini, Jr. wrote:
>
> > Well, this is my first attempt at a Web site. Actually, there's two, at
> > these URLs:
> >
> > http://highgate.comm.sfu.ca/~rcini/pdp11/index.html
> >
> > and
> >
> > http://highgate.comm.sfu.ca/~rcini/classiccmp/index.html
>
> PS. These links did not work for some reason. I believe your index.html
> is missing. I think your pdp11 directory is also MIA.
The directory's there, but the pages are called "index.htm" not
"index.html"... looks like they were created with that nasty FrontPage
stuff.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
At 05:41 PM 8/19/98 -0500, Doug wrote:
>On Wed, 19 Aug 1998, Alex Knight wrote:
>
>> One of the more interesting machines that I have written
>> an article about for my Web site is called a Mathatron, which
>> was advertised as a desktop calculator/computer and sold as
>> early as 1964.
>
>Hi, Alex. I really think this is the coolest find yet. I have a desktop
>programmable computer from 1959, but mine is analog. I haven't heard of
>any desktop programmable solid-state digital machine that predates your
>Mathatron.
>
>> Another "crossover" machine that I have a little info
>> (mainly pictures) of is the HP 9830, called a calculator
>> but in fact a computer with BASIC.
>
I found a book I would recommend if anyone finds a copy, although I am still
getting used to it. It is "Computer Structures: Readings and Examples" by
Bell and Newell. It uses strange notation (for me) and even the table of
contents is "virtual".
Anyway, it includes descriptions of 2 desktop calculators, both about 1968:
an Olivetti 101 (USD$3500) and a HP 9100A. The HP uses core memory, its
program ROM uses 16 layer PC board technology. The HP article is a reprint
>from the HP Journal. Does anyone have either of these?
There are many other computers described, both common and uncommon. Some are
valved, such as the UK Pegasus, which was only 3 "bays" large.
-Dave
At 03:29 AM 8/19/98 -0500, Doug wrote:
>ObCC: Supposedly, MITS came out with a hobbyist machine a couple of years
>before the Altair called the MITS 816. I haven't found much info about
>it. Is it real?
>
>-- Doug
>
Have you found any more? I looked for MITS ads in Popular Electronics
>from about 1971 to 1974. They had many calculators, sometimes the last 2 digits
in the model number = calsulator digits. I think the nmost digits I saw was
14, though. Also clocks, etc.
In late 1974 their ads were for a 416 which was a 4 channel x 16 led "logic
scope" Built in one of those black bakelite boxes. It sounds like one of
those oscilloscope "multi-channel" adapters that were popular when CMOS
multiplexers came out, like the 4051, but this one used led's instead of am
external scope.
-Dave
Hello, all:
Well, this is my first attempt at a Web site. Actually, there's two, at
these URLs:
http://highgate.comm.sfu.ca/~rcini/pdp11/index.html
and
http://highgate.comm.sfu.ca/~rcini/classiccmp/index.html
I found out today looking at the site "live" that certain FrontPage
elements did not translate (such as the hit counter). I'm opening up these
URLs for criticism. Let me know what y'all think.
I also need good links recommendations. I have a few, but I need more.
Rich Cini/WUGNET <nospam_rcini(a)msn.com>
- ClubWin/CW7
- MCP Windows 95/Windows Networking
- Preserver of "classic" computers
<<<< ========== reply separator ========== >>>>>
Actually they do both, unfortunately sometimes simultaneaously:)
>At 12:40 AM 8/16/98 +0100, you wrote:
>>engine, transmission, hydraulics (it's a Citroen with hydraulic
>
>Omigawd... You poor soul you... Here, let me send you an Altair to make
>up for your suffering! 8^) (The french should make love, not cars.)
>
Francois
-------------------------------------------------------------
Visit the desperately in need of update
Sanctuary at: http://www.pclink.com/fauradon
< As far as I know, all DEC versions of the VT103 came
< with an 18 bit backplane for the QBus. If an LSI-11/03
Correct.
< is used, I understand it may be ill advised to make any
< changes in the backplane, as well as fruitless, since this
< CPU can use only a maximum of 56 KBytes of memory
< in any case.
Also correct.
< for the PDP-11. However, I have also heard that the
< use of a quad CPU with a 22 bit backplane may also
< risk damage to the CPU in the VT103 environment.
I've done it. The bigest things is the power supply
is somewhat limited.
< BUT, I have seen both the dual 11/23 (M8186) and
< the dual 11/73 (M8192) used with an upgraded 22
< bit backplane within the VT103 along with a full
< 4 MBytes of memory. In addition, there was a
Very doable. The biggest thing is for most DEC OSs
256k (18bit) is plenty.
A good package is a 11/23, 256kram, DLV11j, RQDX3, BDV11.
That gives you 4 serial ports, full memory without backplane mods,
RX50/RX33 floppy and MSCP hard disk (RDxx) and the BDV terminates
the bus plus supplies some of the desireable boots (no mscp).
using a 11/23b or 11/73 you can remove the BDV11 and they have
mscp boots. however the PS is right on the edge.
< tube. The disk drive happened to be a Micropolis
< 1325 of 70 MBytes. And while I would strongly
< recommend against running with a DHV11 for any
< extended period of time due to the lack of a proper
That would overstress the PS and seriously need a bigger fan.
< with the 11/23, and shortly thereafter with the 11/73,
< a far better PC than the MS-DOS/Intel combination
< could produce until the 486 was released in 1989.
you bet!
< If anyone has a VT103 and needs some help with
< how to set it up as well to convert to a 22 bit backplane,
< likely both Megan Gentry and I are able to supply the
< necessary technical information.
I've built a few and have data as well.
Allison
Question of the day, how do you go about cleaning an RL02 pack. I'm not
talking about the "Customer" cleaning that the user manual talks about.
I'm talking about the "Dec Certified Tech" six month cleaning or however it
was they put it (read it last night). The six month cleaning sounds like
it includes cleaning inside the pack, which is what I"m interested in. I
know someone, Tony I think, mentioned taking apart and cleaning RK05 packs.
Well that's what I'm wanting to do with this RL02.
It's called the pack is visably dirty inside, with a thin film of grim.
Any suggestions, recommendations, crys of "are you out of your freaking mind"?
Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh(a)ix.netcom.com (primary) | Linux Enthusiast |
| healyzh(a)holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| and Zane's Computer Museum. |
| http://www.dragonfire.net/~healyzh/ |
