Henk,
I was researching my Corcom F2280 on the internet and came across
your 2004 message:
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Who can help me with an EMI filter from an IBM 5110 ?
Mine has an internal non-repairable short circuit.
This EMI filter is a CORCOM type F2280 and is located in the mains
entry box underneath the screen tube.
Any one ?
Thanks Henk
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I have one, if you're still interested.
Bob
> I rarely see ASCII art these days. There was a retro ASCII Art
> newsletter that was published every few months which had some ASCII art
> in it, but sadly the people behind it have decided to stop making it.
> Only 5 issues exist, and at present I only have issue 5
I feel there are 2 subtly-different forms of ASCII-Art. The first is
essantally 2-colour, and uses characters of the right shape to form the
image. The second uses characters of different average densitys to form a
sort-of greyscale image.
The former is used (and I still regularly use it) for things like
schematic diagrams. I think I've worked out ASCII-Art versions of the
symbols for all common components, and I've drawn up quite complex
scheamtics that way.
The second, which seems to be a lot rarer, is the sort of thing used for
that picture of the cat, I guess.
-tony
Stroller <classiccmp.org at stellar.eclipse.co.uk> wrote:
> > The board has a PCI edge connector, a BT848 video decoder ...
>
> I do not believe these are uncommon.
>
> Note especially the first link:
> http://www.google.com/search?q=BT848
Err, yes...I actually had noticed before, and meanwhile got it to work using the generic Bt8x8 driver from btwincap.sourceforge.net. I had just hoped that somebody might point me to the original driver for that card. The btwincap thingie implements lots of stuff (like program lists, tuner and audio crossbar control by I2C or I/O lines...) that this simple device doesn't need.
--
Arno Kletzander
Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen!
Ideal f?r Modem und ISDN: http://www.gmx.net/de/go/smartsurfer
The seasonal holidays give me time to play around a bit ...
I wanted to connect my DECprinter I (that's an LA180) but
I could not find any documentation here at home, neither
on the web! Can somebody who knows or has an LA180
connected tell me how it is hooked to a serial line?
Or point me to an LA180 user's manual on the web?
>From my guess, the BERG header is "standard" as on M7800
DL11's or M7856 DL11-W, SLU's (with the appropriate lugs
either RS-232 or 20 mA current loop), but I would rather be
assured than destroying a very nice printer!
thanks,
Henk
I was dismantling some old stuff that I got as a lot and came across
this beastie.
It's a National Semiconductor Microcomputer Systems BLC 80/10.
Clone of an Intel iSBC 80/10.
Single board 8080A computer with sockets for PROMs and 1K of RAM
onboard, several parallel ports, one serial port, and Multibus
interface for expansion. As used in this case, it was standalone with
only the power pins on the Multibus connected (and the I/O at the top).
As the only Multibus backplane I have is an IRIS 3000 series
(double-deep), it's available.
> From: Fred Cisin <cisin at xenosoft.com>
> > Worse, on many systems the answer differs depending what point you
> > measure at. On most Unix variants, for example, it's 0x0a when
> > measured in files or in C strings, but 0x0d 0x0a when measured on
> > hardware serial lines.
>
> in which case, what characters would
> fprintf(PRN, "%s" , "X\n" );
> actually send to the printer?
Unix was the first ASCII-using OS that I saw that used a print
control character "\n" as a logical separator. Prior to that, I'd
seen decimal 31 (US) used. The benefit of using the ASCII separator
characters (US RS GS FS) is that one can stucture a file or files
hierarchically (i.e. units in records in groups in files). A shame
that our current modern systems don't take advantage of this.
Even CDC SCOPE or NOS allowed for file/record-level hierarchies. Up
to 15 levels of records were allowed, IIRC. So you could skip to the
next level 4 record within a file, bypassing all intervening level 0,
1, 2 and 3 records in the process. A shame that was never carried
into our "modern" systems.
Does anyone know why SUB (0x1A, 26) was used to denote an EOF in CP/M
and, to some extent, DOS text files?
IIRC, there is at least one programming language that treats newline
as a quotable character.
Cheers,
Chuck
This from Billy Petit:
------- Forwarded message follows -------
Unless I have badly confused names, the GRID system was a very
unusual Control Data experiement. It was a 160-A made from CDC's
Interbrid logic chips. It used a 12 bit X and Y axis vector
display. The instruction set was the standard 160-A but with some
extra commands supporting the display. It was initialized with
Function Ready commands, then did vector transfers directly from the
processor memory. The memory was 12K core of 12 bits.
This was a very small run system, somewhere around 20 to 30 systems
total built. They were made at the Roseville plant.
The GRIDsystemwas droppeda little afterCDC bought out the imaging
group from Itek and formed the Digigraphics Division. (The market
wasn't big enough to support two competing product lines.) The 274
console was the second generation system from this new group. The
first was a huge console used on 3000 systems. It was used on large
CAD systems. They were made at the Burlington, Mass. plant. I
installed four of them at Lockheed in Marietta when they won the C-5
contract, circa 1966-67. Maybe another 10 systems total, were made.
The second generation Digigraphics system used a new controller built
>from 6000 logic modules. It was a 16 bit controller and used on the
1700 systems. There was a limited version that shipped with the
System 18.
I'd love to see the GRID manual posted to bitsavers. If you will
loan it to Al or me, we will scan it and return to you. I may still
have some schemantics for it in the garage, but I haven't seen them
since 1976 so I maybe imagining their existence.
I have recently talked to one of the designers of the GRID, but my
contact addresses for him don't work.
I still can't post emails directly to the cclist, so can I get one of
you to put up this follow up message?
Thanks,
Billy
I am throwing stuff out and found these two dongles. The first is a
little 2" X 2" dongle which says "Plug into serial port" on one end
and has a female DB25 port, with a pass through on the other end.
It says PSpice MicroSIM Corporation, Electrical Circuit Simulator, ID
#66097".
The other is a long module labeled "P-CAD Software Security Device,
104-0019-01, Serial No. 15871, 047-0124-00. This module is about
12" long and has a lid which hinges upwards and contains ten slots
for small modules. One module is installed and it is labeled
"PC-CAPS, Serial No. 7125, 104-0120-01". This long module also has
a pass-through and appears to require a 9VDC power supply.
I have no use for these and only a vague idea of how I would make use
of them. So if anyone wants them for the cost of shipping let me
know by email. I am in Austin, TX near Spicewood Springs and Mopac.
If I don't make arrangements with anyone by Sunday, they're going in
the trash.
Jeff Walther
I wrote the machine code for the MMD1 and MMD2 and was wondering if anyone
would find it valuable? I also created an experimental model for E&L that
never shipped where I converted the CPU over to a 6502. Any takers?
It's all on printed paper, so I don't know what the best way to get it on
line is.
--David
