If I remember right (it's been many years),
turbo switching was actually performed from the keyboard.
Try hitting CONTROL ALT +? to enter turbo mode.
(Use the + sign on the 10-key)
If that doesn't work, try various control combinations,
including sequences ending with Page Up / Page Down.
Tim
________________________________________________________________________
More new features than ever. Check out the new AIM(R) Mail ! - http://webmail.aim.com
> The clock video on the VC8 page is much more dynamic. I used some unix
> font tools and a little bit of python to make bitmap images of the
> numerical characters.
I don't know right offhand where to find them, but you should dig around
and find the glyphs for the "Dali Clock". These morph from one digit to
the next.
Over a year ago I asked for some help on getting a PDP-8/e EAE
functional. There was an immediate response and I got a later version
M8330 that was EAE compatible. Thanks to those who helped.
In the spring I got a version of SPACEWAR to work. I also played with a
clock for the point plot display. I made some videos, but didn't do
anything with them at the time. I was not satisfied with the quality.
Nonetheless, today I added them to my web pages.
http://www.chd.dyndns.org/pdp8/VC8/http://www.chd.dyndns.org/pdp8/spacewar/
The clock video on the VC8 page is much more dynamic. I used some unix
font tools and a little bit of python to make bitmap images of the
numerical characters. These were then converted to PAL8 source. The
hands are drawn using the Bresenham algorithm.
Since it is the close to the new year, I want to thank everyone for the
knowledge that I have gained from listening here. When we don't stumble
over our own narrow mindedness and biases we are a pretty knowledgeable
bunch. Thanks again to all...
-chuck
PS: I tried the videos using firefox and internet explorer in windows
and firefox in linux. I am curious if there are problem, but please
don't turn this into some kind of off topic discussion.
A friend has a Data I/O 2900 and has lost the disks to it. He says
he found Disk 1 of v5.7 and Disk 2 of v5.8, and Disk 3 of both sets is
missing.
Anybody able to help out with disk images?
Doc
From: Richard <legalize at xmission.com>
> I just got the Hardware Reference Manual on ebay for the CDC Grid
> Display Subsystem (Publication No. PD82134500 September, 1969, PD-1-0).
> This doesn't appear to be on bitsavers; I'm not sure but I haven't
> stumbled across it in the pdf/cdc folder. The manual is a photocopy of an
> original and will be scanned for bitsavers.
>
> GRID stands for Graphical Interactive Display, making "Grid Display
> Subsystem" contain a redundant "Display" when expanded. This looks like
> an interesting system with a builtin console and enclosure containing all
> the graphics processing hardware.
Sounds like a one-off by or for the NCAR crew; given the date, the
standard CDC product would have been something like the IGS 274--a
large display console with light pen, but with the controller in a
separate large 3000-series type (i.e. green glass and "barred"
front) cabinet.
Certainly hooked up to the 6600's that NCAR owned at the time. Did
you check the pubs catalog in the CDC section on bitsavers? It's
pretty complete, even listing QSEs.
Cheers,
Chuck
Hello listmembers!
Apart from the usual Season's Greetings to all of you, I've got some questions again. Sometime this year, I scored some kind of video digitizer/framegrabber card out of an old PC. These days I managed to analyze the harddisk that came with it for drivers, but didn't find any.
The board has a PCI edge connector, a BT848 video decoder (datecode from '96, so marginally on-topic), two crystals, a bunch of passives, and an s-video socket plus two RCA sockets accessible from the outside. Manufacturer is "MultiMedia Access Corporation" according to the etch, a sticker holds the part number "91-00109-01 Rev. C" and a serial number. www.MMAC.com now redirects to the site of ViewCast and the oldest stuff I was able to find there and in the waybackmachine are drivers for a series of cards called "Osprey". Anybody got some hints for what I've got there and where to find drivers/software for it?
Additionally, can somebody please enlighten me as to the pinout of that weird 7-pin Mini-DIN video input connector on the WinTV PCI series cards? I know that the outer four pins will accept a standard s-video cable, but I don't have the adaptor plug needed for composite input and would like to cobble up a replacement.
Thanks in Advance, and my best wishes for a successful year 2008.
Yours sincerely,
Arno Kletzander.
--
Arno Kletzander
Stud. Hilfskraft Informatik Sammlung Erlangen
www.iser.uni-erlangen.de
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Browser-Versionen downloaden: http://www.gmx.net/de/go/browser
On Dec 28, 2007, at 8:11 AM, Jules wrote:
> I could see that happening for a 'hobby' machine snagged from a
> dumpster if
> all the person had was the CPU unit. It'd be reasonably easy to hook
> some form
> of graphical display to the machine, but more tricky to emulate a
> missing Sun
> keyboard.
Yep. Would have shipped with a Type-3, but you can do a cable adaptor
>from a Type-4 or Type-5. Remember that these need ECL displays and not
analog.
I believe that after a while the serial console will pop out with a
">", but there are no intermediate messages such as you get with a
SPARC. Haven't had one of these for a couple years, but I remember
getting the console prompt on serial when I had one
I have a DD-50 single drive enclosure and a surfeit of DD-50 -> HD-50
(SCSI-II type) cables, as well as some Type-4 keyboards in my garage. I
haven't gotten the original message yet, so I'm not sure where you are
- I'm in the Western Washington (state) area.
The 3/60 is eminently hackable - look at the Sun-3 Zoo for ideas.
People have wired in internal 1/3 ht drives (there are solder pads for
a 50-pin header on the SCSI bus) and done many other things. I run my
3/110 diskless from the network (served from an IPX, but Suns are so
standard that you should be able to use Linux or xBSD). 4.1.1_U1 is the
release of SunOS to get, and it's floating around out there.
Hi there,
I work with Andrew Back, and he's recently forwarded us a copy of your email
about the old computers you're about to throw away. We'd very much like to
give them a loving home - specifically the CMB Pet and BBC Micro computers.
Are they still up for grabs? If you could please let me know availability
and location, I'll sort out a courier or something similar.
Many thanks for this opportunity!
Cheers,
Phil
If you feel this subject is too far off-topic, please respond
privately. OTOH, it just might help some who are trying to repair
some of the old gear that uses SMT.
At any rate, I've got some 68-pin TQFP packages that I need to mount
on a PCB. I've searched the web and become throughly confused over
recommendations.
I'd like to stay away from using a hot-air rework iron as I don't
think I have enough skill to use it without causing some damage to
the PCB or component. I'd like to use my temperature-controlled
Weller soldering station as the heat source. I'll also be using Sn-
Pb solder rather than lead-free.
Two approaches that I've seen for conventional soldering iron
mounting involve what I'll call "flood and suck" that involves
covering all of the leads on one side of the QFP on the PCB with
solder and then using a solder "sucker" (such as a Soldapullt) to
remove the excess.
The other approach uses solder wick (solder removal braid), laying
the braid over the QFP leads and PCB and heating and applying solder
*through* the braid to the leads.
I'm fairly confident that I could do either, but who's had real
success with either method?
Thanks,
Chuck
I just got the Hardware Reference Manual on ebay for the CDC Grid
Display Subsystem (Publication No. PD82134500 September, 1969, PD-1-0).
This doesn't appear to be on bitsavers; I'm not sure but I haven't
stumbled across it in the pdf/cdc folder. The manual is a photocopy
of an original and will be scanned for bitsavers.
GRID stands for Graphical Interactive Display, making "Grid Display
Subsystem" contain a redundant "Display" when expanded. This looks like
an interesting system with a builtin console and enclosure containing
all the graphics processing hardware.
Has anyone used one? Anyone got any photos? The manual just has
diagrams.
Included with the manual was:
- a short whitepaper on the "GRID Operating System (GOS)",
marked "Robert Gammill 9/11/70", 13 pgs.
- "GRID* USER MANUAL", John Walker, David Robertson, Robert Gammill,
National Center for Atmospheric Research, Boulder, Colorado 80302,
December 1971, 36 pgs.
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
<http://www.xmission.com/~legalize/book/download/index.html>
Legalize Adulthood! <http://blogs.xmission.com/legalize/>
Fred Cisin wrote:
> On Fri, 14 Dec 2007, Roy J. Tellason wrote:
>> This whole idea strikes me as just plain crazy...
>> But! For some reason the above reminded me of something that I was
>> considering early on, probably early 1970s or so. Instead of a drum just
>> use a loop of tape. You can start with an old reel-to-reel deck, ignoring
>
> Howzbout an 8-track?
>
> Unfortunately, the kids today don't even remember them, so wouldn't fully
> appreciate the absurdity.
>Ben alias woodelf wrote:
>Was not the stringy floppy a medium like that?
First off, I would like to add that I am only 17 but to answer the question, yes, the stringy floppy was to a degree
just like the 8-track drive people made. Actually, I have here instructions on how to modify a regular 8-track deck
to work with a regular TRS-80 model I.
_________________________________________________________________
Introducing the City @ Live! Take a tour!
http://getyourliveid.ca/?icid=LIVEIDENCA006
I've never done it with either method.
http://www.youtube.com/watch?v=wQXhny3R7lk
---
That is EXACTLY the technique I used! Note the flux
application beforehand and putting the flat of the
soldering iron towards the body of the chip, with
solder going in towards the board over surface of
the iron.
Hello people,
I am looking for Chad Martin to talk about his computer in my hand. If you
know his current email address please let me know off-line. His previous one
(name @ fli...) stopped working.
Best,
vax9000
>Whereabouts are you? I'm in Regina, Saskatchewan and in my basement I have
>a VAXstation 4000/100, Sun Sparcstation 20 and Sun UltraSparc 1/170E, all
>running, plus a VAXstation 3100 and a VAX 4000/100 (neither running but both
>should be in working order).
>
>Jim
I live in Kamloops BC so I am two provinces over. :( The closest thing I found DEC related in this town was a
random EIA distribution panel for a rack and that was in the trash.
>I posted just a few days ago about two dec racks (corp cabs) going out to
>the trash that day. They are still out there, but the dumpster arrived today
>so they will be gone tomorrow.
>
>Also going out the door and into the dumpster tomorrow, a "wide" corp cab.
>This is the more modern beige rack, but this one is wider than usual (I
>think vax's were commonly in this type of cabinet). There is the normal 19"
>wide rackspace, but on this one there an extension on the side about 1/3 of
>a cabinet wide used for cable management. It formerly housed an 11/44, TS05,
>RX02, and RA81. If someone wants them speak up now....
>
>Jay
Ack! even if you were close to me it's too late now. :(
_________________________________________________________________
Read what Santa`s been up to! For all the latest, visit asksantaclaus.spaces.live.com!
http://asksantaclaus.spaces.live.com/
> As an expert in this area, my opinion is that silicon sensors have a
long
> ways to catch up to film. Both CCD and CMOS sensors lack in
resolution
> and the spatial sampling artifacts Der Mouse mentioned are only part
of
> the problem.
Another part of the problem is archiving the images. Decay of film/paper
photography is well known and incredibly slow(esp. B&W). Digital bitrot
is much faster and not well known. Just ask anyone who's lost a hard
disk drive full of digital baby pictures. I've also seen a lot of
discussion about CD-ROM and DVD-ROM lifespan and it's not good either.
>
>Subject: How uncommon are DEC racks these days
> From: john ball <ballsandy at msn.com>
> Date: Tue, 25 Dec 2007 23:44:43 -0200
> To: <cctalk at classiccmp.org>
>
>
>I have had my fun with Unix boxes but I think it's time to try something a
little older and more complex.
>I first thought about looking for an older IBM mainframe like the system/36
but my chances of finding one were pretty much slim to none so I then
thought about the computers that DIGITAL made. Yes it would be fantastic
to own something like a PDP-12 rack (how often do you see a bright green
computer these days?) but knowing how my luck is almost never with me I
would have to settle with something smaller. That returns me to my chances
of finding a PDP. I live in Western Canada and so far it has been hard
enough just finding a SPARCstation 1+ so I assume that something like a
PDP will be even harder. How common are DEC's these days and where are
they usually found and how much do they usually go for if any price at
all?
PDP-12s are rare. there were very few made and fewer available. Estimates are
around a dozen around.
More likely candidates and PDP-10 (later models), PDP-11s.
>It would be a rather nice (but late) christmas present to myself.
You can find PDP-11s easily enough, PDP-8 of the omnibus era are easy
to find earlier 8s are much fewer. In the PDP10 realm the later '10s
(system 20s) are still findable though there were not all that many
made in that family.
So the likely candidates in order of most frequently found/bought to least.
You can buy or find these fairly cheap
=======================================
microVAX (all sorts and easily found)
PDP-11 (qbus) very common
PDP-11 Unibus
PDP-8[E,F,M,a] omnibus
VAX 750 and 730s
Good luck!
============
VAX (78x series, )
PDP-8 earlier [L, I, and straight]
PDP10 (system 20 later models)
Everything else is scarce to rare or only a few left on earth.
What differentiates them is production volumes. Some the volumes were
very small like a PDP-6 where there were something less than 10 made.
Allison
>_________________________________________________________________
>Read what Santa`s been up to! For all the latest, visit asksantaclaus.spaces.live.com!
>http://asksantaclaus.spaces.live.com/=
Are you interested in purchasing working Kaypro "8"'s [not II, 2, IV, 4] and
parts / items for them? They are much more powerful than the early standard
Kaypros and I have found none on my many web searches, although they were
very popular upgrades / modifications in the 1980's.
I am posting a lot of information on _www.vintage-computer.com_
(http://www.vintage-computer.com/) , now that I can finally access it. There were about 5
previous posts by me "GADFRAN" but I was not able to do anything else on the
site except post.
I will also check back on this website also periodically.
We are downsizing in retirement and sometime in the Spring of 2008, April or
May, we will get our next dumpster. They are on the list to be disposed of
,unless it is worthwhile disposing of them in another acceptable way.
Naturally,I will try eBay with a local go between.
They served my wife and I very well in the 1980's and early 1990's in our
many professional, volunteer and hobbies.
I can send you a detailed list with even s/n, model numbers, digital
pictures, etc.
Briefly:
all 6 working Kaypro "8"'s were modified by me from Kaypro 4's using
Microcornucopia directions and parts. I kept them running with whatever that was
needed including:
2 CRT's + boards
4 main boards
4 power supplies
2 keyboards
numerous chips including Z80's - A and B, etc.
numerous Teac and Tandon drives
Technical manuals
original software
etc.
Thanks!
Frank
**************************************See AOL's top rated recipes
(http://food.aol.com/top-rated-recipes?NCID=aoltop00030000000004)
-------------- Original message from "Jay West" <jwest at classiccmp.org>: --------------
> I posted just a few days ago about two dec racks (corp cabs) going out to
> the trash that day. They are still out there, but the dumpster arrived today
> so they will be gone tomorrow.
>
> Also going out the door and into the dumpster tomorrow, a "wide" corp cab.
> This is the more modern beige rack, but this one is wider than usual (I
> think vax's were commonly in this type of cabinet). There is the normal 19"
> wide rackspace, but on this one there an extension on the side about 1/3 of
> a cabinet wide used for cable management. It formerly housed an 11/44, TS05,
> RX02, and RA81. If someone wants them speak up now....
>
> Jay
>
>
If no one wants the whole thing ???
I'm still looking for the top and 1 side panel for my 11-44 system
Has the flip up rails for the 11-44. So the main top panel is removeable.
- Jerry
Jerry Wright
JLC inc
g-wright at att.net
I've got a pile of Z80 ICs here that I don't need; anybody want some?
Z80 CPU
Z80 DART
Z80 SIO
Z80 CTC
Some A & B versions, Mostek, SGS & Zilog, various date codes.
Also some SMC CRT9007s; plastic & ceramic, some with heat sinks.
mike
Insurance company is paying to clean some of my "affected" gear. However,
they want me to get a price on just replacing the vt220 & televideo 950
instead of getting those two cleaned & ozoned.
I found one dealer selling refurb vt220 w/LK201 for $248USD. Anyone else
have a preferred source where I can buy either of the above?
Jay West
I have had my fun with Unix boxes but I think it's time to try something a little older and more complex.
I first thought about looking for an older IBM mainframe like the system/36 but my chances of finding one were pretty much slim to none so I then thought about the computers that DIGITAL made. Yes it would be fantastic to own something like a PDP-12 rack (how often do you see a bright green computer these days?) but knowing how my luck is almost never with me I would have to settle with something smaller. That returns me to my chances of finding a PDP. I live in Western Canada and so far it has been hard enough just finding a SPARCstation 1+ so I assume that something like a PDP will be even harder. How common are DEC's these days and where are they usually found and how much do they usually go for if any price at all?
It would be a rather nice (but late) christmas present to myself.
_________________________________________________________________
Read what Santa`s been up to! For all the latest, visit asksantaclaus.spaces.live.com!
http://asksantaclaus.spaces.live.com/
I have been looking for a readable copy of the schematic for this card.
It seems that the Harte Technology copy is all that's out there. The
schematic is real poor quality
Anyone have one they have scanned ????
Thanks, Jerry
Jerry Wright
g-wright at att.net
While the subject of delay lines has been hashed out here for a while, most of
the delay lines used in TV sets are probably not too reasonable for data
storage.
In particular those used in NTSC sets are to balance the delays in the chroma
circuits (those that are on the 3.579 sub carrier) with the luma signal (which
isn't processed). Since the chroma goes thru additional circuits, the other
signal needs to be delayed (not very long) to maintain the registration. In
PAL sets, I believe that the same idea is used. The difference is that in PAL
sets a different subcarrier frequency is used, and the demodulation products
are different for every other line (they swap In-phase, and Quadrature). SECAM
is a bit different, as they do NOT use in-phase and quadrature (simultaneous)
demodulation of the color difference signals, but alternate them line by line
(The 'S' in SECAM). This necessitates a one line delay to keep around the
other color difference signal to display on the line. More complexity in the
receiver with all that switching and "storing", and while it has lower color
resolution is more immune to phase differences which plague signal chains in I
& Q (NTSC/PAL) systems. PAL systems on the other hand with the swapping of I &
Q every other line (the 'A' in PAL) usually nulls out the differences.
If you decide to make up a delay line to hold CPU data, try a prototype using
shift registers. They are a bit easier to make up, and often the chips are
available. The problem is that they come in weird (at times) sizes (132, 80,
and the like). I'll leave it to the reader to determine the usability of odd
sizes and their original use.
--
Sorry,
No signature at the moment.
____________________________________________________________________________________
Never miss a thing. Make Yahoo your home page.
http://www.yahoo.com/r/hs
...don't you also need to *write* at the same speed? I'll bet
there's something in the design of the audio cassette heads that
makes it hard to do that.
I'm pretty firmly in the camp of (at least initially) abusing
technology by changing as few parameters as possible. That'd mean try
the experiment with a (or 8, but since it's a serial computer .... )
head mounted over a drum (or disc) that pulls tape past it at the
design speed for that head, 1 7/8 ips (?) for a cassette tape head.
That also implies the max. data rate will be something like the max.
bandwidth of the tape recorder, maybe 10 kHz. (Hey! Stereo recorders
will give you 2 bits parallel, at close to 18 kHz....)
Once you get it running at that clock rate and get the
distributed.net client compiled and running ( :-) ), then work on
speeding it up. I'd say the kewl factor on that machine will so blow
away anything I've ever done that you need not also have a MHz
advantage... Good luck!
At 9:43 -0600 12/14/07, cctalk-request at classiccmp.org wrote:
> > Very interesting project. Won't standard tape heads only work reliably if
>> the magnetic material's passing by at quite a narrow range of speeds,
>> though? Google suggests that's 1 7/8" per second, which isn't very fast at
>> all - a drum that can do a few tens of RPM seems possible, but 6000??
>
>I don't think it makes a difference. The higher the speed, the larger the
>voltage from the flux transition, but that shouldn't be a problem (within
>reason). The head gap and medium speed dictates the "resolution" of the
>system. You can think of it as being like trying to write with different
>sizes of pen nib.
>
>Look at reel-to-reel audio recorders - they may run at a variety of speeds,
>giving a tradeoff between audio quality and recording time. You can use a
>higher flux density with a larger head gap (and a correspondingly larger
>drive signal), but you need to haul the tape through faster to maintain the
>bandwidth.
>
>On playback, you get the problem that higher frequencies produce a higher
>voltage, hence the need for equalisation (not unlike the RIAA curve for
>magnetic record pickups).
>
>In this case you probably just want to detect the presence or absence (or
>possibly polarity) of a pulse. Equalisation won't be a worry.
--
- Mark, 210-379-4635
-----------------------------------------------------------------------
Large Asteroids headed toward planets
inhabited by beings that don't have
technology adequate to stop them:
Think of it as Evolution in Fast-Forward.
I am probably the original source of that manual, and actually the manual is
quite good .... except for the schematic. That probably reflects how the
schematic in the manual actually was. I have two other files that contain
the schematics for the 64FDC in a better quality format. One is a 24MB
multi-page TIFF file (not too many readers can read multi-page TIFF files),
the other is an adobe acrobat pdf file produced from the TIFF file which is
a 6-page pdf file and it's only 720k in size. The 24MB TIFF file was
scanned from an original at 600 dpi, and the pdf file, not withstanding that
it's only 5% as large, seems to have retained the quality of the tif file.
Barry Watzman
Message: 3
Date: Wed, 26 Dec 2007 04:31:27 +0000
From: g-wright at att.net
Subject: Cromemco 64FDC manual, needed
To: cctalk at classiccmp.org (cc_talk)
Message-ID:
<122620070431.15702.4771D91E000F3A4900003D5622193100029B0A02D29B9B0EBF9B0809
079D99D309 at att.net>
Content-Type: text/plain
I have been looking for a readable copy of the schematic for this card.
It seems that the Harte Technology copy is all that's out there. The
schematic is real poor quality
Anyone have one they have scanned ????
Thanks, Jerry
Jerry Wright
g-wright at att.net
