On April 8, Sridhar the POWERful wrote:
> > > > > Ok, well, "video subsystem", if you like. And isn't a 3AT actually a
> > > > > 7030-3AT? Would you consider kicking that GXT1000 my way? What would you
> > > > > want for it?
> > > >
> > > > And if any of those 3ATs need a new home... 8-)
> > >
> > > Wait just a dad-blamed minute! You already GOT your RS/6k fix for
> > > the month! :^P
> >
> > Yeah but I'm quickly learning that these machines are *cool*. My
> > new 3CT with its 66MHz clock is *screaming* fast! These processors
> > are *incredibly* clock-efficient. Now I want MORE! 8-)
>
> MUHAHAHAHA. My evil plan is working.
FREAK!
-Dave
--
Dave McGuire "I thought it would go quickly,
St. Petersburg, FL that rubberized bottom..." -Sridhar
On April 8, Doc wrote:
> > > Ok, well, "video subsystem", if you like. And isn't a 3AT actually a
> > > 7030-3AT? Would you consider kicking that GXT1000 my way? What would you
> > > want for it?
> >
> > And if any of those 3ATs need a new home... 8-)
>
> Wait just a dad-blamed minute! You already GOT your RS/6k fix for
> the month! :^P
>
> Doc, who never gets _anything_ cool...
Yeah but I'm quickly learning that these machines are *cool*. My
new 3CT with its 66MHz clock is *screaming* fast! These processors
are *incredibly* clock-efficient. Now I want MORE! 8-)
-Dave
--
Dave McGuire "I thought it would go quickly,
St. Petersburg, FL that rubberized bottom..." -Sridhar
Jerome H. Fine wrote:
>Note that under VMS Exchange, you may be limited to just ONE
>RT-11 partition, i.e. partition zero. It was over 10 years ago when
>I used Exchange under VMS and the RT-11 partition default was
>zero.
If all you want is a straight copy of an RT-11
disk and you are using OpenVMS, why not use
BACKUP/PHYSICAL?
I would suggest:
$ BACKUP/PHYSICAL device: filename.BCK/SAVE
This would save your floppy contents in filename.BCK.
Then restore with:
$ BACKUP/PHYSICAL filename.BCK/SAVE device:
I don't have the necessary h/w anymore to
try this, but it should work. I've certainly done
something similar with RX50 WPS floppies and I've
seen others do the same with DECmate III floppies.
The added advantage is that you end up with
a block-by-block copy of your floppy that
you can save on CD or whatever.
Antonio
Well, thanks everybody for enlighten me.
Edward (too!) and I will take together at least 3 RM03's.
I checked the PDP11 Peripherals handbook 1978-79
to see what is written about the differences between
the RM02 and the RM03.
Edward wrote already that the RM02 was for all PDP-11's
except the 11/70, and that the RM03 was specifically for
the 11/70.
Furthermore average seek time and latency are identical,
however, the peak data transfer rate for the RM02 is only
806,000 bytes/second, where the RM03 has a peak rate of
1,200,00 bytes per second.
That is why DEC saw the RM03 (according to the book) as
the high performance storage for database applications.
More (difference) info on both drives for completeness:
RM02 RM03
rotational speed : 2400 rpm, 3600 rpm
max latency : 25.9 msec, 17.3 msec
avg latency : 12.5 msec, 8.33 msec
max start time : 25 sec, 35 sec <--- not a typo!
typical start time : 15 sec, 25 sec <--- not a typo!
Thanks again for the good advice. I will grab 'm !!
And Tony, "you speak from my heart" as we in Holland say.
Nothing can beat the sound, smell and certainly the looks
of any blinkenlight PDP, IMHO...
- Henk.
On April 7, Zane H. Healy wrote:
> >That's the first thing I looked for, too.
>
> Yeah, since I've already got a Pro380 (that I don't even use) and a RT-11
> V5.x doc set, an Ethernet controller would have been the only real reason
> to go for it (though the colour graphics is kind of nice).
What's the resolution of the Pro mono & color framebuffers, does
anyone remember? I recall really liking the video...the VR241 wasn't
a *great* monitor, but it looked pretty good...and those VR201s were
razor sharp!
(I could look it up, but laziness is the chain the binds my butt so
tightly to the chair...)
-Dave
--
Dave McGuire "I thought it would go quickly,
St. Petersburg, FL that rubberized bottom..." -Sridhar
All right, now that I have your attention, I would like to give a report of
my amazing weekend trip to Fort Worth.
The most important development of this weekend was my PDP-11
devirginization. Yes, for the year or so that I have been into this hobby, I
have rescued or acquired several PDP-11s. Until this weekend, however, I had
never applied power to one. Many of these vintage machines are sufficiently
different from the PCs I grew up with that learning about them is like
rediscovering the computer itself, starting from scratch. There has always
been a fear within me of not knowing how to operate one of these machines
after applying power to it. Other machines have received no power because I
am waiting for my electronics knowledge to develop; these machines will be
disassembled, tested part-by-part, and reassembled when that knowledge is
sufficient. Despite my inactivity, I have somehow known that I would love
exploring these machines once powered.
That last prophecy has fulfilled itself! I visited Owen Robertson while in
FW, and we powered up his 11/34. He showed me a few things -- how to load
RL01 packs, where the power switch was, etc. -- and we proceeded to play
with the machine. There are problems with the RSX-11M pack he has, so I
loaded up an XXDP+ pack. After printing and reading the help file, I
experimented and was able (after some trial and error) to -- drum roll,
please -- load UPD2 and create another bootable pack with XXDP+ on it!
It would be a minor task for many of you, but it is a major milestone for
me. I am now PDP-11 devirginized.
Owen and I also scoured a few scrapyards in the DFW area. Highlights of our
combined finds:
- DEC TS05
- DEC rack spacer panels, rail slides, etc.
- DG MPT/100 (looks like a TRS-80 Model III)
- DG Nova 3 chassis
- Two Sun 4/110 towers.
- TRS-80 Model III, diskless, with 16KB RAM
(Identical to my first computer except for the extra 12KB :-))
- A Lanier word processor (I believe of the kind Pres. Carter used)
- CBM PET 8032
- Three IBM 5150 PCs
Eric Dittman was going to accompany us but was called away on business.
It's too bad we didn't do this a week sooner. The scrappers had just
finished destroying what was a very nice PDP-11/60. I at least found and
took the unit numbers from the RK07 and RP0x drive.
By the time we were finishing up at the second scrapyard, it was raining
heavily and *muddy*. It will be interesting to see what lives through being
rained upon. Also, as it turns out, a pallet full of desktop 386 PCs isn't
useless after all: you can lay them in puddles and form a walkway to keep
yourself dry(er). We referred to the process as 'uninstalling Windows'.
--
Jeffrey Sharp
The email address lists(a)subatomix.com is for mailing list traffic. Please
send off-list mail to roach jay ess ess at wasp subatomix beetle dot com.
You may need to remove some bugs first.
> "Douglas H. Quebbeman" wrote:
> >
> > Sheet-fed scanner for most stuff, he does use a hand-scanner
> > for bound stuff. Like Eric, I'm pretty sure he does most pages
> > as 600dpi line art. I just got doing the same for a section of
> > a CDC manual that's in hot demand; then used Kodak Imaging
> > to create a multi-page TIF from the individual TIF pages. Then
> > print to PDF using Adobe Acrobat 4.05's PDF Writer. Yields a
> > 367kb PDF, whereas multipage TIF was 2.1MB.
>
> Then your TIFFs weren't compressed with the Group 4 2D algorithm, which
> is the best around, until we've all got JBIG tools. Either that, or PDF
> Writer reduced the resolution during conversion.
Well, I scanned the originals as 600dpi line art,
instead of gray scale. Lineart generates bitmap
files, just two bitplanes. I'd assume that it
compresses much more easily since adjacent pixel
runs of white are next to each other and chomp
down nicely...
However... have you checked out the DjVu imaging compression
technology? DjVu is a non-propreitary superset of the iterated
fractal system imaging compression technology I read about in
Byte magazine back in the 1980s. Now that the secret's out of
the bag, everyone can have utilize extremely high-compression
if you can suffer the slight loss of fidelity to the original
(for example, the analysis will find a single ideal letter form
for an 'A', and uses that ideal letterform image when reconstructing
the document, instead of recording every pixel at every location.
For more info on DjVu, just point Google and cut the leash...
-dq
-Douglas Hurst Quebbeman (DougQ at ixnayamspayIgLou.com) [Call me "Doug"]
Surgically excise the pig-latin from my e-mail address in order to reply
"The large print giveth, and the small print taketh away." -Tom Waits
> > However... have you checked out the DjVu imaging compression
> > technology? DjVu is a non-propreitary superset of the iterated fractal
> > system imaging compression technology I read about in Byte magazine
> > back in the 1980s. Now that the secret's out of the bag, everyone can
> > have utilize extremely high-compression if you can suffer the slight
> > loss of fidelity to the original (for example, the analysis will find
> > a single ideal letter form for an 'A', and uses that ideal letterform
> > image when reconstructing the document, instead of recording every
> > pixel at every location.
>
> Sounds like OCR software to me. There any major differences?
OCR maps letter forms to text; this is pure compression.
Looking at it another way, DjVu condenses any image fed into it
into a mathemetical expression that, when evaluated, yields
as its result, the image of the original document.
So, it's nothing like OCR. If the original image were a page full
of little apples, the program will decide which apple is the best
one, and when it reconstitutes the original image, will put as
many copies of the one apple on the page as the original had. If
there are subtle differences between the apples that the eye
won't readily see, then the reconstituted image won't have those
subtle differences.
It goes beyond this too; it separates the text and calls that
foreground, and everything that's not text is background. The
background is compressed with a different family of wavelets
than is used for the foreground.
It's worth spending an hour googling for better answers than
I could ever hope to provide...
-dq
-Douglas Hurst Quebbeman (DougQ at ixnayamspayIgLou.com) [Call me "Doug"]
Surgically excise the pig-latin from my e-mail address in order to reply
"The large print giveth, and the small print taketh away." -Tom Waits
> -----Original Message-----
> From: Robert Schaefer [mailto:rschaefe@gcfn.org]
> It's a neat little toy. I came across the PCMCIA controller
> card for one a
> few weeks ago and ended up finding more about the -e than the
> card itself.
> IIRC the model number is 9533-- put that in the search and
> you should end up
> with some good hits. I just found
> http://www.tavi.co.uk/ps2pages/ohland/9533.html in an old msg
> to myself. If
> it's the one I'm thinking of, it's a good read.
Thanks. That was informative. It seems the 387 math-co is
"optional," so it's good that I have it. I also think there's some
extra RAM in there. (Above the 4M they claim are on the board)
Reminds me very much of the intel-based "multia" systems, which
are about the same size, and about as well integrated.
A related question would be, does anyone know a cheap source of
PCMCIA boards? Specifically, to actually use this thing, I'll want
an ethernet adaptor (10Mb), and probably some linear flash. Some
SRAM that will operate at (is the low voltage 3 or 1.5 on those?)
the lower voltage would probably be good too.
(where...) Can one still get PCMCIA hard disks that will work in
this thing too?
I do have a specific and on-topic reason for wanting the flash and
SRAM boards. I intend to use the machine as a way of bootstraping
a Minix installation for my "Poqet PC," if I can manage it. The
Poqet will read linear flash, but not write it, and will read and
write SRAM.
Chris
Christopher Smith, Perl Developer
Amdocs - Champaign, IL
/usr/bin/perl -e '
print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n");
'
On Apr 4, 23:29, Chad Fernandez wrote:
> I've read about bolt types on Brit bikes a bit. It seems that they had
> a variety of things they called Whitworth.
Not really. See Tony's post; there are various series that use the same
Whitworth thread form (55 degree thread angle, and rounding of crests and
troughs) but they have different names. BSW (British Standard Whitworth)
is the standard coarse series, analagous to ANC/UNC. BSF (British Standard
Fine) is the corresponding fine-pitch series, analagous to ANF/UNF.
There are some special-purpose threads you might have come across, such as
BSB (British Standard Brass) which is used for finer pitch on soft metals
(26 tpi, regardless of diameter). BSP (BS Pipe) is used for some pipe
fittings, and is confusing because the sizes refer to the internal
diameters of the high-pressure pipes or glands it would be used for (so
1/4" BSP is a little over 1/2" diameter over the threads). To add insult
to injury, there are two types: plain, and tapered. Then there are some ME
(Model Engineeer) threads which are very fine pitch, in two standard
series: 32 tpi, and 40 tpi. A few of these correspond to normal
BSW/BSF/BSB threads, but apart from that, they're relatively rare. Rarer
still is British Standard Cycle, a fine pitch thread with a 60 degree
thread angle, mostly 26 tpi or 32 tpi (1/8" is 40 tpi, though).
--
Pete Peter Turnbull
Network Manager
University of York
> >This reminds me, these acoustic couplers may need some periodic
> >maintenance, such as putting some talcum powder on the rubber pieces
> >that hold the telephone handset.
>
> I've also seen it recommended for refrigerator door gaskets.
> What talcum would do to protect rubberized plastic from
> deteriorating is a mystery to me. Are we talking about
> actual latex in any of these situations? I think not.
>
> I would guess these rubbers harden or goo-ify over time
> due to something other than lack of talc, such as long-term
> exposure to UV or ozone or absorption of volatiles from
> other plastics.
>
> I have an old Anderson-Jacobsen 300 baud modem in a wooden
> box that needs a new home, I think...
The wooden ones are the original, 1st generation AJ's, IIRC...
I have the second-generation plastic shell that assembles
with an aluminum "waistband" and allenhead screws. The
third generation used thinner plastic clamshells and no
waistband, just some tapered Philips-head screws. The
3rd generation was also limited to 300 baud, while my
2nd generation could do 450 & 600 using the 300 standard
(Bell 101?).
-dq
-Douglas Hurst Quebbeman (DougQ at ixnayamspayIgLou.com) [Call me "Doug"]
Surgically excise the pig-latin from my e-mail address in order to reply
"The large print giveth, and the small print taketh away." -Tom Waits
> -----Original Message-----
> From: Gene Buckle [mailto:geneb@deltasoft.com]
> > Atari is the major exception (in that TOS is actually based on
> > CP/M...
> Huh? AFAIK, TOS is the ROM code that was the Atari
> equivalent to the PC
> GEM AES (application environment services) as well as some
> other low-level
> support routines.
Well, this comes from reading, and not from first hand experience,
so I could bw wrong, as always. (Not that I'm always wrong, but I
could be... ;)
I thought that they were supposed to have used a good chunk of CP/M
source in creating TOS, though.
Chris
Christopher Smith, Perl Developer
Amdocs - Champaign, IL
/usr/bin/perl -e '
print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n");
'
A copy of the 2nd Ed just fell into my lap.
LMK if anyone needs this.
Jeff
________________________________________________________________
GET INTERNET ACCESS FROM JUNO!
Juno offers FREE or PREMIUM Internet access for less!
Join Juno today! For your FREE software, visit:
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Hi cleaning out offices and found 2 IBM 5.25" floppy drives
EXTERNAL says something like "type 4865" on the bottom and has
some 50-ish pin male plug. Also an old AUI/BNC ethernet card
and a 128 kB memory extension card. This is in Indianapolis.
Let me know or by the end of the week this stuff is going to
dumpster.
-Gunther
--
Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org
Medical Information Scientist Regenstrief Institute for Health Care
Adjunct Assistant Professor Indiana University School of Medicine
tel:1(317)630-7960 http://aurora.regenstrief.org
> At 09:59 AM 4/6/02 -0500, you wrote:
> >+AD4- how many of you fell for the hp67c ?
> >
> >Is a link still available?
> >
> >John A.
>
>
>
http://www.hp.com:calculators-product-id=67cx@209.197.117.170/item/product2.
htm
Other than the fact that HP dumped the calculator line, and
thus this had to be bogus, was there something particularly
funny about it that I'm missing?
-dq
> -----Original Message-----
> From: Bryan Pope [mailto:bpope@wordstock.com]
> Does the GEM TOS have any relationship to the GEM OS
> that was available
> for the PC? (Other then name)
Indeed it does. GEM was DR's GUI that sort of "went with" CP/M,
though, not many people that I know of really used them together.
It was available for a few systems, though, I can't name them other
than MS-DOS and Atari's STs right off.
Atari is the major exception (in that TOS is actually based on
CP/M...
Chris
Christopher Smith, Perl Developer
Amdocs - Champaign, IL
/usr/bin/perl -e '
print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n");
'
I really don't know when the SS5 came out, so this may be OT.
As usual, I have no connection with the seller, and don't know anything
about him at all. Please reply directly to Micheal.
Doc
Newsgroups: austin.forsale
Subject: FS: Sun Sparc 5's
From: Michael <res006ft(a)gte.net>
Date: Mon, 08 Apr 2002 14:39:52 GMT
I have 20 Sparc 5's $40.00 each 110Mhz, floppy, cdrom, video and sound, 1g
hdd, 32m ram. email me at mgldwng(a)aol.com.
Shipping from Dallas will be between $15 and $20 dollars
Michael
> -----Original Message-----
> From: ard(a)p850ug1.demon.co.uk [mailto:ard@p850ug1.demon.co.uk]
> I am interested in classic _hardware_. I'm really not interested in
> running unix v.7 under a PDP11 emulator on a PC -- I can get much the
> same prompt from native 80x86 linux. But I am interested in running a
> real PDP11.
Thanks, Tony. You've just managed to put my perspective on the whole
thing into words, probably much more articulately than I would have at
the time I read the original message.
> And that means running the old drives too. They're part of the
> 'experience'. As is having to align them, repair them, and so
> on. If I
> wanted a modern computer, I'd buy a modern computer, OK...
That too...
Chris
Christopher Smith, Perl Developer
Amdocs - Champaign, IL
/usr/bin/perl -e '
print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n");
'
Hi, all.
I went last night and picked up (OK, dragged, while groaning) the
MicroVAX Terry Murphy posted for rescue Thursday night.
I'm fairly certain he hadn't ever used it, as the description was not
terribly accurate. There was no DELQA, several of the cab kits aren't
there, memory is only 16M, etc. Nice haul, anyway. The thing came in a
42" elephant-ear cabinet, which is in fair cosmetic shape, and without
plugging it in, I'd guess good to excellent functional shape. Some QBus
boards I can't ID, and the other goodies that came with, I'll post
separately.
So.
I'm not enamored of the idea of running a 240VAC rack in my garage if
not necessary. That leaves me with two other ideas.
1) The "drawers" are simply BA23 enclosures, right? Any reason I can't
use the primary enclosure as a stand-alone unit? It's going to be
running a minimal set of hardware:
KA655 CPU
Dataram 63016 16M RAM
DMV11 (simply to occupy the last CD slot)
DEQNA/DELQA (whichever I can scrounge cheapest, first)
TQK50 (undecided)
RQDX3 (with probably only the RX50 or an RX33 attached)
That _is_ the right bus order, isn't it?
Will either the power requirements or cooling be a problem? What if I
decide to run the RD54 instead of the TK50? Is it OK to run the BA23
without skins, lying flat?
And, if I want to run the second backplane and extra drives, can I
just stack them?
2) I can put all the above in the BA123 lurking downstairs. But it
seems a huge waste of space & power over the BA23. Plus, I don't have
cooling vanes for the dual cards in the added CD slots, or enough
D<mumble>11 boards to go around. Plus, the BA23 I can wedge into my
office, but the BA123 would have to live in the garage.
Advice, discussion, points I've missed, all welcome.
Doc
There are a number of denial-of-service attacks under
way on ther Internet all the time, but we're in a
wave of heavy attacks right now.
Once by one, DNS servers are getting hijacked, and as a
result, domains are evaporating into the ether.
Sometimes, one person can get through to another for
a while because their domain remains cached somewhere
along the route. But eventually, you get cut off.
When it happend to us last week, our ISP tracked down the
hijacking machine, which itself had been hijacked, and
managed to well, it has a cold, shall we say?
Nice to have an ISP with good Kung Fu...
;)
In the meantime, list members might volunteer to
get word through to some member that some other
particular member might not be able to reach.
And there are these things called telephones, too...
-dq
-Douglas Hurst Quebbeman (DougQ at ixnayamspayIgLou.com) [Call me "Doug"]
Surgically excise the pig-latin from my e-mail address in order to reply
"The large print giveth, and the small print taketh away." -Tom Waits
> > > I don't see any taint on mine -- all the holes look the same
> > > shape to me. Can you give example titles? Perhaps they changed
> > > their methods after a certain date.
> >
> > http://members.iglou.com/dougq/cdc/6000front.jpg
> >
> > Should be obvious over on the left, center...
>
> Mine doesn't have an enlarged hole like that -- as I said,
> all the holes are the same size.
>
> Is there an extra thickness of paper (like those hole reinforcers
> you can buy) or is the "margin" on the inner edge of the hole
> just too thin to be sheet-fed?
Too thin. Intuitively, I thought I'd get better results
(fewer rips) by feeding the opposite edge into the gripper.
But more taint tore that way than when fed in hole-edge
first. And in the old days, I did repair pages using
the hole reinforcers (back before they were self-adhesive
and thinner than they are now), and the result is that
the manual takes up twise as much space in the binder.
No, I want to meet the genius who invented this binding
system. Like GBC but not GBC.
I also would like to find a connection for the yellow
construction-paper (not really but that's close) that
CDC used for the 70s era covers. Some mill in Minneapolis
must have a ton of it laying around...
-dq
-Douglas Hurst Quebbeman (DougQ at ixnayamspayIgLou.com) [Call me "Doug"]
Surgically excise the pig-latin from my e-mail address in order to reply
"The large print giveth, and the small print taketh away." -Tom Waits
Anyone know what became of Doug Yowza who used to be on this list?
-Bill Richman (bill_r(a)inetnebr.com)
Web Page: http://incolor.inetnebr.com/bill_r
Home of the COSMAC Elf Microcomputer Simulator, Fun with
Molten Metal, Orphaned Robots, and Technological Oddities.
Hi:
During a search I did tonight trying to locate info on a core-memory module, I kept running into references to this list, so I thought I'd joing.
I've been going through some of my ancient electronics stuff and just came across a 42*100 bit Ampex core memory module. This module has P/N 3255780-01 S/N FA 2655 04570061.
It consists of 2 boards fastened together with screws and spacers with the core plane sitting on the lower board under a plexiglass cover. It appears to be made up of 2 separate core planes of 42*50 bits. The board is 5.5 * 5.5 inches by 9/16" deep.
The edge connectors are broken off, for their gold plating I suspect. I have a faint memory of picking up this board around 1976 in a computer surplus store. I've separated it into two boards (connections between the two boards are made by 12 wires soldered to the boards) and scanned it and these jpegs are available if anyone needs them to help out.
I was wondering if anyone had any information of where I can find more information about this core-memory module. I haven't been able to find out anything about the IC's which populate this board (TI AAAL4 and Fairchild AAVA1) and even info on what these IC's are would be usefull as the board appears to be a simple 2 layer circuit board with very wide (compared to modern boards) traces that are trivial to convert to a schematic by using the scans of the two sides of each board.
It would be neat to get this board up and running someday, and hopefully someone on this list has the info.
Regards,
Boris Gimbarzevsky
On April 8, Jeffrey Sharp wrote:
> That last prophecy has fulfilled itself! I visited Owen Robertson while in
> FW, and we powered up his 11/34. He showed me a few things -- how to load
> RL01 packs, where the power switch was, etc. -- and we proceeded to play
> with the machine. There are problems with the RSX-11M pack he has, so I
> loaded up an XXDP+ pack. After printing and reading the help file, I
> experimented and was able (after some trial and error) to -- drum roll,
> please -- load UPD2 and create another bootable pack with XXDP+ on it!
Kick ass!! :-)
> It's too bad we didn't do this a week sooner. The scrappers had just
> finished destroying what was a very nice PDP-11/60. I at least found and
> took the unit numbers from the RK07 and RP0x drive.
I weep for the PDP-11/60.
I take it you "educated" said scrappers, and left them your number?
-Dave
--
Dave McGuire "I thought it would go quickly,
St. Petersburg, FL that rubberized bottom..." -Sridhar
Does anyone happen to have the switch settings for a "Teleterminal
FlyReader 232" tape reader? The one I have works at 1200-N-8-1, but
I'd like to know if I can set it to 9600 so it's the same speed as
the other serial stuff I've got hooked up to my IMSAI.
-Bill Richman (bill_r(a)inetnebr.com)
Web Page: http://incolor.inetnebr.com/bill_r
Home of the COSMAC Elf Microcomputer Simulator, Fun with
Molten Metal, Orphaned Robots, and Technological Oddities.
>From the pic I'd put my money on the monitor PSU
mains smothing cap being o/c.
Lee.
> Has anyone ever repaired a Lisa 2 with the following symptoms: A
> distorted video image on the upper 1/3 of the screen? I'm the high
> bidder on a Lisa 2 on ebay
>
>
>
>
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>
> Does anyone have one? I have borrowed two large manuals.
> I'd like to scan them, as opposed to photocopying, but
> it would have to be quick and reliable (so I can get
> good results the first time and return the manuals
> in good shape).
I don't know what Al does, but CDC manuals have "taint",
a small piece of paper that forms the outside edge of
that center, long-oval-shaped hole. The taint gets torn
by sheet feeders... so if you want to return them in the
same condition as you borrwed them, I'd have to recommend
against the sheet feeder.
:(
I have an Imsai SIO Rev 3 serial card. I have the docs but the last section
of the manual may be missing. I've read the section on how to set the
two jumpers for the baord address but I'm having trouble translating.
Could someone who knows this subject please help me to figure out the
address of this SIO card?
Jumps on the baord are set like this:
C7 (port Select 1)
1 16
2 ---- 15
3 14
4 ---- 13
5 12
6 ---- 11
7 ---- 10
8 9
D6 (port Select 0)
1 16
2 15
3 16
4 13
5 ---- 12
6 11
7 10
8 ---- 9
Here is the s-ction out of the manual:
C7
A7 --+---------- 1 16 ------+---------|
|___|>o--- 2 15 ______| |
A6 --+---------- 3 14 ------+---------|
|___|>o--- 4 13 ______| |
A5 --+---------- 5 12 ------+---------|
|___|>o--- 6 11 ______| |
A4 --+---------- 7 10 ------+---------|
|___|>o--- 8 9 ______| |---)
| )o-------
--- 1 16 ------+---------|---)
--- 2 15 ______| |
--- 3 14 ------+---------|
--- 4 13 ______| |
I/O --- 5 12 ------+---------|
MM --- 6 11 ______| |
MM --- 7 10 ------+---------|
I/O --- 8 9 ______| |
D6
OK, so I know that A7=0, A6=0, A5=0 and A4=1, It's not Memmory mapped IO so
jumpers go on pins 5 and 6. So where are A3-A0, on D6?. I think the address is:
A7 0
A6 0
A5 0
A4 1
A3? 0
A2? 0
A1? 1
A0? 1
and the answer is 013H ????
"The board address is selected by jumpers or a DIP switch in locattion C7 and
D6. There are two cases for which this board may be jumpered: 1) to respond
to Input/output instructions and 2) to respond to memory access instructions.
The case of input/output instructions will be treated first.
In selection location D6 pins 8 and 9 must be jumpered together and pins 5 and
12 must be jumbered together. The user must jumper socket C7 so when the
desired I/O Port address appeas on the address lines, the inputs to the NAND
gate from bits A4 through a7 are high. If, for instance, address bit 6 is
desired to be a 0 when the board responds, then pins 4 and and 13 would be
jumpered together. If address bit A6 was desired to be 1, then either pins
3 and 14 may be jumpered together or 3 and 13 may be jumpered together,
since 13 and 14 are tied to the common address selection input.
It is suggested, however, that when jumpers are being used,
pins 3 and 13 be connected together to provide a easy visual indication of
whether the address bit is a 1 or 0 since that will correspond to whether
jumpers are slanted or straight across the jumper socket."
...
Thanks for the help.
Continuing saga of Friday nights haul:
When I emailed Terry that I'd pick up the MicroVAX, and we made the
arrangements, he told me, "By the way, as long as you haul off that
rack, you're welcome to take the PDP-11 and the PDP-8." Naturally, I
made that further concession....
The PDP-8/A is in pretty sorry shape, at first glance. It's on hold
till I have time to go over it and figure out what's there and what it
needs. Probably a couple of weeks.
Anyway. the 11/53 is in good shape, inspected, cleaned, and back
together. It has Micro/RSX installed on DU0, and not only is it Greek
to me, but I've been Googling for 3 hours, and haven't found a coherent
description or command reference.
Moreover, I don't see any software at all available to run on
Micro/RSX. Are RSX-11 utilities binary-compatible? Any suggestions as
to a next step? Pointers at the Micro/RSX Users' Group would be handy.
Doc
Does anyone have one? I have borrowed two large manuals. I'd like to
scan them, as opposed to photocopying, but it would have to be quick and
reliable (so I can get good results the first time and return the manuals
in good shape).
Thanks,
-- Derek
> Well, I guess "confiscated" was the wrong term. My checked baggage
> was checked, my ride dropped me and left, and my only option was to
> leave it there or leave with it. So if Jim hadn't been on shift, I'd
> have probably lost my light.
> It _felt_ like confiscation, and I _was_ upset.
The airport in New Orleans confiscated (yes, took away and kept, never to
return) a mini stapler my father had in his laptop bag. This is one of
those staplers that is about an inch long, holds 20 staples of that super
mini, can't staple thru more than two sheets of paper, size.
This was back in November, so everyone was a bit more paranoid. But he
showed them it was just a stapler... and they still took it away as a
"weapon".
I would LOVE to see that happen.... take me to Cuba or I'll fail to break
your skin with my mini shards of metal, in my lethal squeeze powered
dispenser! Don't make me empty this thing onto my shoe... I'll do it...
I'm just crazy enough! And if that doesn't scare you... I'll beat you
with this airline pillow!
Hell, you could do more damage by sitting in the exit row, and pulling
the shiny red handle on the wall.
-chris
<http://www.mythtech.net>
This afternoon, while copying IBM 1620 manuals for Al Kossow's Bitsavers
Project, I met Mr. Alan Earls. He is writing a book on Rt 128, as he
explains below, and is looking for information. I have invited him to
visit both the Rhode Island Computer Museum ( www.osfn.org/ricm ) and
the RetroComputing Society of Rhode Island ( www.osfn.org/rcs ), and
promised to forward his request for information to friends and
colleagues. If you can help the fellow, either directly or by
reference, please contact him.
Clearly, any tech history writer looking for information on Clevite has
done his homework!
-----Original Message-----
From: Alan Earls <alanearls(a)attbi.com>
To: geoff(a)pkworks.com <geoff(a)pkworks.com>
Date: Saturday, April 06, 2002 4:48 PM
Subject: RE: Route 128 book
Geoff,
Nice to meet you and chat about "oldies" (Mailboxes, Etc. in Franklin).
As I mentioned I'm finishing up (by May 1) a photo/history book about
Route 128 and environs in Mass. from roughly the end of WW2 until the
early 90s. This isn't a scholarly effort. Rather it is an attempt to
provide a popular book that will capture representative images of the
"dawn" of high tech -- the post war years with the expanded defense
budgets and new electronic technology --- through to the recent past.
I'm still trying to locate photos of people, places, and things
associated with DG, Prime, Wang and many other companies. I would also
love photos from the Multics project at MIT and some photos of the early
area semiconductor companies: Clevite, Sylvania, Transitron, etc.
Any suggestions would be greatly appreciated.
Sincerely,
Alan Earls
508 528 6930
PLEASE NOTE: Effective immediately, my email address is
alanearls(a)attbi.com. Please be sure you update your files. Mail
addressed to my "mediaone" address will no longer be delivered after
Mar. 15, 2002.
Has anyone ever repaired a Lisa 2 with the following symptoms: A
distorted video image on the upper 1/3 of the screen? I'm the high
bidder on a Lisa 2 on ebay
url:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2013387255&r=0&t=0&showT…
If you look at the screen shots, the video screen is distorted very
similar to what my compact macs do with cold solder joints on the analog
board. I figure that it's either a similar problem, dirty contacts or
bad caps on the board. Just wondering if anyone has seen similar
symptoms. I think I can get a Lisa video board from a friend in DFW who
has a cache of Lisa's in storage. The guy's Apple collection is
awesome. He has several of absolutely every product Apple ever made
including a lot of prototype stuff that was never publicly released.
I usually don't attempt board level repair, but for a Lisa, I'll make an
exception. I thought Tony might have done one before. Have you ever
seen this one before Tony?
I think a Lisa would fit in perfectly with my NeXT's, Sun's, Indy and
BeBox.
Thanks,
James
You mean you're supposed to read the manual first?
It's not great as far as hauling large items, but I have a '66 Mustang that has proven excellent for hauling incredibly vast quantities of smaller stuff. Even a rackmount SUN 3/280 on the from seat. An On Topic to boot...
--
Love of the Goddess makes the poet go mad
he goes to his death and in death is made wise.
Robert Graves
> From: Hans Franke <Hans.Franke(a)mch20.sbs.de>
> If you got some 2016s laying around, I'd be more than willing
> to frre you of this burden.
I would send a few of them to you, but wouldn't it be cheaper for you to
buy them locally?
> You realy think I'd dump any computer stuff ?
Hey, if you would steal the RAM from a ZX81, who knows what you might do
;>)
Glen
0/0
I seem to recall that a couple years ago someone converted the "Field
Guide" to something that could be read on a Palm Pilot. Am I remembering
correctly, and does anyone have a copy? I just got a Sony T615C, and one
of the must have items for it is going to be the Field Guide!
Zane
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh(a)aracnet.com (primary) | OpenVMS Enthusiast |
| | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
In a project I'm thinking about starting this summer, I want to try and
re-create a PDP-11 (or maybe a -8 or something) using either SSI logic
and/or PAL/GALs. I would like to do the entire thing in SSI, but I fear
that I'd quickly eat up a lot of money on the project, so where necessary
I'd replace sections with PALs. Anyone have any good ideas?
About what I'm doing: Trying to replicate an 'old-computer feel' for a
mock airport that a friend of mine is thinking about making. I'll have a
good amount of time to work on designing it before I start laying down
copper on a circuit board. I'd like to make something that 1) looks
authentically old and 2) has a design I can (semi-legally, not for resale)
copy so I don't have to do all the re-design work myself.
I've considered just using a plain-old Apple //e that I have, but that
wouldn't be 'old enough' looking I was thinking. It'll need to have a
good amount of I/O, and be easy enough that I can actually build it and
understand how to program it without much effort. By that way, I don't
care about using 'standard OS's' or 'standard hardware' too much, I just
want to put together a system with a CPU, serial port, and some sort of
floppy drive interface (I prefer 5-1/4 disks at some PC readable format)
it can boot off of - or perhaps an IDE interface as that would be easy to
program a 'driver' for (or so I'm told).
Does anyone have any suggestions for what I should try to build? Eg. what
model PDP-11 cpu card, what prints I should get to try and assemble a
basic working system, etc. Should I try something else? I would like to
go a bit overboard, the look is a part of the thing, but I don't want to
screw with finding things like QBUS drivers, and don't think I'll want to
bother with a 'traditional mini-computer bus' if I don't need to.
This is what I have so far:
1) CPU card
2) Memory - SRAM
3) Front-panel switches
4) Console serial port
5) A few digital I/O ports
6) Floppy interface (anyone suggest an easy to interface controller?)
7) IDE controller
-- Pat
Still got a pile of FREE STUFF in Austin, TX. People have emailed saying
they're interested, then drop off the face of the earth. Please dont
contact me unless you are serious about picking any of these up.
See pictures at http://www.mrbill.net/~mrbill/freestuff
The GRiD laptops are taken, the DELNI and Sun VME boards are
still available.
List of the boards:
501 1767 - 4/6x0 memory board
501 1855 - IPI controller (x4)
501 1221 - Comm Processor II
501 1203 - ALM-2
501 1217 - SCSI controller (3row DB50) (x2)
And these non-Sun-branded boards;
ED5P182-30/G1 - FDDI
ED5P182-32/G1 SUN DKHS - FDDI (x2)
pics at http://www.mrbill.net/~mrbill/fddi/
Bill
--
Bill Bradford
mrbill(a)mrbill.net
Austin, TX
Just dusted off an ADM3a, and it's intact except for a key centered
between the arrow keys on the right-hand side, which is missing the
top. I'm also not certain that all of the other keys are in the right
positions. Can someone take a couple of close-up digital photos of
the keyboard and e-mail them to me? Or maybe scan a manual page that
shows the keyboard layout? I may try to modify a spare PC keyboard
keytop to replace the missing one, if the colors are close (or I can
paint it to match). Thanks!
-Bill Richman (bill_r(a)inetnebr.com)
Web Page: http://incolor.inetnebr.com/bill_r
Home of the COSMAC Elf Microcomputer Simulator, Fun with
Molten Metal, Orphaned Robots, and Technological Oddities.
Well,
A few weeks ago, I mentioned I'd archived the 8051 stuff
>from the SIMTEL archive. As it turns out, the QIC-80 tape
they're on must have stretched, and I only wrote one set
of that stuff.
I thought I had it on the hard drive, but all that was
left was:
ML-ASM51 Metalink 8051 Macro Assembler
BASIC-52 BASIC-52 source
BASIC31 (BASIC52 adapted for 8031)
DIS8051F 8051 disassembler
DISASM51 another one
8051-FAQ.TXT what it says
00FILES yada
00README yada
8051STUF.LOG FTP directory of what was there
CLOCK.ASM clock program
I may have floppies with the stuff, so I'll keep looking...
-dq
-Douglas Hurst Quebbeman (DougQ at ixnayamspayIgLou.com) [Call me "Doug"]
Surgically excise the pig-latin from my e-mail address in order to reply
"The large print giveth, and the small print taketh away." -Tom Waits
the answer is yes, the question is how or why? :) I picked one up out of a
stack of indigo 2's thinking that someone was just being funny sticking
r10k badges on the teal box, but it actually is! I was under the
impression that this machine wasnt made. Let me know if you know
otherwise, I'll have more info whenever I boot it up and hook it up to a
monitor. It has a floptical drive too! ;) I still have that chrp prototype
machine from motorola if anyone is interested.
Thanks,
jon
From: Fred Cisin (XenoSoft) <cisin(a)xenosoft.com>
>On Sat, 6 Apr 2002, Tony Duell wrote:
>> I've never seen really fine ACME threads, but I guess they could
exist.
>
>How about in the focusing mechanism in some lens mounts?
Leadscrews used for floppies.
Transverse drives as in the ARC-5 tuning assembly.
Feed screws used for linear positioners.
just a few I've used...
Allison
>Thanks to the assistance of a fellow lister
>(hi Mark!) I finally have one now, which I will keep forever.
>
> -Dave
Hi Dave! Putting people together with computers they love just
(snif!) makes me feel all gushy inside ... but I in turn have to pass the
thanks in this case on to William Fulmor, without whom I'd know nothing
about UnixPC's, and who is responsible for my having access to any at all.
And more generally to many other listmembers (Hi Tony, Jeff, Zane, Claude,
William W, Eric, MrBill, Doc, Don, Megan, Terry, and others I've
reprehensibly left out ....) who have given me invaluable assistance in the
past.
This is a truly great community to be part of.
BTW, for those with whom I've dropped conversations right in the
middle concerning my Stylewriter, apologies. Work has gotten unusually
time-consuming for a while and the Stylewriter is still sitting right where
it was, waiting for me to get back to it. I'll get there eventually, but
it'll be a while more.
- Mark
The previously-mentioned VAX came with this board.
AW-20-859-2 TFC-925
QBUS/GCR Tape Controller
Much to my disappointment, it seems to be a 9-track tape controller
instead of a SCSI interface. No cables, just the board. If anybody has
more detailed info, I'd like to know.
If it's really not a SCSI controller, I don't plan to have a 9-track
anytime soon. I'll entertain offers to trade for it.
Doc
On April 6, Ben Franchuk wrote:
> The PDP-11 is way too complex for SSI logic.
DEC did it. :)
-Dave
--
Dave McGuire "I thought it would go quickly,
St. Petersburg, FL that rubberized bottom..." -Sridhar
Zane commented...
>> >I'm a little shocked to hear he (Paul Pierce) can read 7-Track tapes
>> >though.
>>
>> Why shocked? Paul has some really cool gear!
>
>I'd heard being able to read 7-Track's was a lost art.
But isn't that what we're all about? Preservation of the 'lost arts'?
;^}
-jim
---
jimw(a)agora.rdrop.com
The Computer Garage - http://www.rdrop.com/~jimw
When's the last time you decompiled Z-80 code? For me it was last
week!
On April 6, The Wanderer wrote:
> > I thought the only big difference between the RM02 and the RM03 was
> > the spindle speed, though.
>
> Not entirely according to my copy of the systems & options summary
> guide.
> The RM02 canbe used with any PDP except the 11/70, while the RM03 is
> only for the 11/70, as it has a massbus interface.
Wait a minute...ALL RM02/03/05 drives are massbus. It is my (old and
possibly erroneous) understanding that the RM03 was sold with the
11/70 in particular because it had a faster spindle speed, and as
such, transferred data more quickly.
What, specifically, does that Systmes & Options guide say about
these drives?
-Dave
--
Dave McGuire "I thought it would go quickly,
St. Petersburg, FL that rubberized bottom..." -Sridhar
On Apr 5, 19:54, Merle K. Peirce wrote:
> Peter, could you address how Acme threads fit into these schemes? I
> should expect that they are always relatively coarse.
In a sense, they don't. They're not normally used for fasteners, which is
what the others are for (arguably with the exception of BSP) :-)
Yes, they're usually fairly coarse, and used for things like leadscrews on
machine tools and vise jaws. For leadscrews, they're usually made to some
specific pitch that equates to some nice decimal number of turns per inch,
or millimetres per turn. They're also unusual in having large flats on
both the crests and troughs (most other threads are rounded on one or the
other); in fact they're almost square -- the thread depth is 0.5 x the
pitch, and the walls slope at only 14.5 degrees, so the included angle is
29 degree, much less than most threads which are typically either 55 or 60
degrees. And the clearance between screw and nut is very small, typically
0.001".
--
Pete Peter Turnbull
Network Manager
University of York
> From: Richard Erlacher
>
> You guys have too much free time ... and the grammar and syntax in this
> thing
> are all screwed up. "Thou" requires "hast" rather than "have." Thine =
> yours. Thy = your.
>
> Dick
>
> > Joe wrote:
> > >
> > >
> > > AMISH VIRUS:
> > >
> > > Thou have just received the Amish Virus.
> > > Since we do not have electricity nor computers,
> > > thou art on the honor system. Please delete all
> > > of thine files.
> > >
> > > Thank thee.
>
So, it should read...
"... Thou hast just received the Amish Virus.
Since we do not have electricity nor computers,
thou art on the honor system. Please delete all
of thy files.
Thank thee.
--- David A Woyciesjes
--- C & IS Support Specialist
--- Yale University Press
--- mailto:david.woyciesjes@yale.edu
--- (203) 432-0953
--- ICQ # - 905818
Mac OS X 10.1.2 - Darwin Kernel Version 5.2: Fri Dec 7 21:39:35 PST 2001
Running since 01/22/2002 without a crash