>> which defines where you can display pixels. If you attempt to
display more
>> pixels on a line than there are holes in the mask, then you will
get
>> banding artifacts.
>
> I've seen no evidence of this. If this were the case, then the
fact that many
> display systems use inexpensive 1000 ppm oscillators would cause
enough
> variation that it would be obvious on those monitors having this
feature.
I have, many times. It's not so visible on modern monitors but is clearly
visible
on domestic receivers when a frequency graticule is displayed.
It's sometimes refered to as Moire effect.
Lee.
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Its cousin is *not* the AS/400... the AS/400 and System/38 are cousins, not
the S/36... The S/36 is, to quote IBM, "an enhanced S/34 instruction
processor with up to 7MB of main storage." It is a damn nifty, bulletproof
box though, I own 3 of them and parts of at least 3 others..
Will J
_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com
Hello all,
After the success of my first batch of goodies, I have unearthed the
following, and offer it up, free, but you pay shipping. I realize on some
of these items it may only be a couple of bucks, but multiply that times the
number of items, and it comes out to a number I don't want to pay :-). The
drill is, they go to the first taker, then I will calculate shipping, and
you can pay by Money Order (International Money Order in US $ for overseas),
or PayPal. I will ship to any address that the US Postal Service will ship
to...
Some of this stuff is not quite 10+ years old, but it is at least
computer-related...
Also, reply to me OFF-LIST, so as not to clog the list, and since I get the
digest, I wouldn't see your replies until sometime tomorrow...
Without further ado:
Books
- Zilog Z8 Microcontrollers User's Manual
- Zilog Discrete Z8 Microcontrollers Product Specifications Databook
- The C Programming Language (yes, it's K&R!)
- A Postscript Cookbook (author: Barry Thomas)
- Radio Shack: Understanding Solid-State Electronics
- Microprocessor Programming for Computer Hobbyists (All examples written
in a language based on PL/M)
- Motorola MC68307 User's Manual
- Motorola MC68HC705K1 Technical Data
- Motorola MC68HC705J1A Technical Data
- Motorola MC68HC705P9 Technical Data (2 copies)
- Motorola MC68HC705C8 Technical Data
- Making CP/M-80 Work for You (mostly a user's guide, no programming info)
- Seagate Wren 7 ST41200N (94601-12G) Product Manual
- Digital Microcomputer Processors 1978-1979 (covers LSI-11 and PDP-11)
- Digital Microcomputer Interfaces handbook 1980
- Introduction to the PDP-11 and it's Assembly Language (Author: Thomas S.
Frank)
- Marshall McLuhan "War and Peace in the Global Village" (Wired reprint)
- Marshall McLuhan "The Medium is the Massage" (Wired reprint)
- Radio Shack: Building Power Supplies
- Michael Abrash "Zen of Code Optimization"
- Java Threads (O'Reilly -- older, covers Java 1.0.2, but applicable to 1.1)
- Java Beans (O'Reilly -- older, covers 1.1)
- Java Network Programming (O'Reilly -- older, covers 1.1)
Hardware
- Tandy Portable Computer Acoustic Coupler 2 (Cat. No. 26-3818)
- Tandy (I think) cable -- 8 pin DIN to two modular phone plugs
- Compaq memory board, "32-bit 6-socket memory expansion board".
Proprietary slot, 4 of the 6 sockets filled. Silkscreen says "spare No.
116803-001", and "diagram no. 001377", and "assembly no 001376". Back is
silk-screened "Board no. 001378-001 A/W Rev E Fab Rev E"
I've been reading the various threads with some interest for the past few
weeks. I've been working in the field since the mid-80's, but no programming
experience, sadly. I have always been an equipment junkie, and something of
a packrat.
Which leads to this: can someone make use of an early NEC Multisynch Color
Graphics Board (GB-1)? It is complete with a daughter board containing a
Z80, and the memory appears to be fully populated. Also have the manual and
a copy of Dr Halo with manual. Three disks (51/4 naturally) appear to have
all the files. It's a full size board, with Tseng processor chips. I'd like
to get a few bucks for the lot, to pay for storage, or whatever. Mailing
would be from MA.
The board has the nine pin connector people here have mentioned, in addition
to two "reserved" jacks. Manual is quite complete, with pinouts, etc. The
daughterboard is the CMII, which gave the board full Hercules compatibility.
Unfortunately, the unit is untested, as I have no equipment available to try
it out. Any sale would be as-is. Interesting item, and I bet it was
expensive.
Also have an Imagraph SCGA6 board with matching cable and manual. Anyone
know what this was used with? If I ever knew, have forgotten...
Harry
It's finally official!
VCF East 1.0
July 28-29, 2001
10am to 5pm daily
Best Western Royal Plaza Hotel and Trade Center
Marlborough, Massachusetts
Admission
$10 daily at the door
Speakers
Want to give a talk at VCF East 1.0? E-mail me at <sellam(a)vintage.org>.
Exhibitors
Sign-up your exhibit at http://www.vintage.org/2001/east/exhibit.php3
Vendors
Want to sell vintage computer stuff at VCF East 1.0? Contact me at
<vendor(a)vintage.org>.
More info to come soon, including updated VCF East 1.0 web pages with
speaker schedule, exhibits and more!
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
Hi Chuck.
Some weeks ago David has set up a website with some scan
of PDP Field Maintenance Print Sets. On of them is the
DRV-11 FMPS MP00054. It is one of the smaller files with
its 3.6 Mb ;-) [600 dpi fine quality scans]
The link is: http://www.mainecoon.com/classiccmp
suc6,
Henk Gooijen,
PDP-11 collector
Sneak-peek of retro-computing: http://home.12move.nl/~sh416008
-----Original Message-----
> From: Chuck McManis [mailto:cmcmanis@mcmanis.com]
> Sent: vrijdag 11 mei 2001 1:41
> To: classiccmp(a)classiccmp.org
> Subject: Docs for DRV-11?
>
> Does anyone have docs on a DRV-11? (16 bit Parallel I/O). I
> bought one on
> Ebay (perhaps it will help in my quest to kludge a cheap SCSI
> controller
> for Q-bus vaxen :-) and now I need some docs for it... I'll check the
> handbook when I get home too.
> --Chuck
On May 10, ajp166 wrote:
> If memory serves the infamous Cray YMP was
> majorly ECL for speed.
Lots of Cray processors were/are ECL. The Cray-1 family were all
ECL...as were all the X/MP and YMP (YMP proper, not just YMP
architecture, some of which are CMOS) machines. More modern smaller
Cray PVP machines (J90, etc) are CMOS, while the bigger ones are ECL.
-Dave McGuire
Hi all,
In my continuing effort to keep the discussion from
becoming too digital, I want to point out a wonderful
article I just found. This article cover the history
of mechanical analog computers in general and
specifically the mechanical analog fire control
computers developed by the Ford Instruments Company
>from it's founding in 1915 up to the dawn of electronic
analog computing in the 1940s.
Beware the PDF is 2.6 MB.
"The Mechanical Analog Computers of Hannibal Ford and William Newell"
by A.Ben Clymer, IEEE Annals of the History of Computing, Vol 15,
No. 2, 1993
http://web.mit.edu/STS.035/www/PDFs/Newell.pdf
And my Ford Instruments page is at:
http://www.best.com/~dcoward/analog/fordsperry.htm
Regards,
--Doug
=========================================
Doug Coward
@ home in Poulsbo, WA
Analog Computer Online Museum and History Center
http://www.best.com/~dcoward/analog
=========================================
I have what purports to be a MicroVMS 4.5 distribution tape. (on a TK50
natch) If you want it, it will cost you $4.00 in postage to get it to you.
Send me an email off list. This could be useful for a MicroVAX I I suspect.
On an unrelated note I found the install notes for the Ultrix distribution
I found and it's targed to a MicroVAX 3500/3600. The release is 2.2-1 with
an upgrade to 2.3
--Chuck
On Wed, 9 May 2001, John wrote:
> Doug...?
Sorry, I'm on digest.
On Wed, 9 May 2001, Bruce Ray wrote:
> ...and who has information on that wonderfully-nostalgic ol'
> Heathkit analog computer that existed in the '60s??
I could probably answer most questions. I have two EC-1s.
> It was the EC-1 that I was thinking of, and was hundreds of dollars in the
> '60s as I recall. Any cover-page art scanned for that to take me back a few
> decades..?
I have both manuals for EC-1 on CD. I could send you a scan
of the cover from both manuals, but there is not a picture of
the computer on the covers. The EC-1 first appeared in the 1960
catalog. Unfortunity, I can seem to find any of Heath catalogs
after 1959.
On Wed, 9 May 2001, ip500 wrote:
> The Heath ANALOG COMPUTER model ES-400 circa 1957]
The Heath Electronic Analog Computer (ES-400 is the model
number of just the cabinet kit) was advertised in their catalogs
>from 1956 to 1959. I have about half of the kit manuals for
this computer, and no computer.
On Wed, 9 May 2001, Bruce Ray wrote:
> I'll ask, John; what -is- the *exact* Heathkit part number for the EC-1
> computer assembly and user manuals?
When contacting Heath manual replacement service, you just need
the kit model number.
Regards,
--Doug
=========================================
Doug Coward
@ home in Poulsbo, WA
Analog Computer Online Museum and History Center
http://www.best.com/~dcoward/analog
=========================================
