I turned on my VT220 for the first time in nearly a year. The
screen says "VT220 Keyboard Error 4", all four green LED's (on the
top right of the keyboard) stay lit, and nothing appears on the
screen when I type.
Disconnecting and reconnecting the coiled-cord between the
keyboard and the terminal causes a cursor block to appear on the
screen, but the keyboard is still locked and the LEDs stay on.
Power-cycling the terminal shows the same error message.
However, the boot prompts from the 11/23+ are displayed normally,
so the receive part of the terminal at least is working.
Where should I start looking, before replacing the keyboard?
thanks for any hints
-Charles
Hi:
I have this manual and have scanned in 40 pages but its allready 125 megs and its 400 plus pages most emails will not allow
this much of an attachment got any ideas?
jim
jimgeneva at yahoo.com
Before I go hauling all those little Torx screws out (yes Tony I *do*
have proper Torx bits, unlike the last person to be inside it), can
anyone point me in the direction of the CMOS battery?
I bet it's right underneath the monitor, or something.
Gordon
Hi,
Thanks for the encouraging responses, I'll go and have a read. Someone also kindly emailed me these URLs with further useful info:
http://www.pimpworks.org/ibm/aixled.htmlhttp://www.pimpworks.org/ibm/ledcomm.txt
I have contact with a AIX CD, and I have obtained (a few!) SCSI CD drive that cn be tweaked to the correct sector size.
Couple more questions though:
1. Is there a back-up battery (perhaps in a RTC chip like on a Sparcstation 2), that will have surely failed by 2008.
2. Is there a source to download diagnostic floppy set, I hadn't known about these until today.
Thanks again,
John
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You are probably right. Its not like I'm trying to hide anything but I
really don't know much about these. Other than the fact that it powers up
that's about it. Picked it up local with the idea of "wow IMSAI" but
realized it's a bit out of my realm of interest, I'll never actually use it,
and I need the money to go to school this Fall. I'm more than happy to
answer any questions anyone has though.
--------------------------------------------------------
Message: 1
Date: Fri, 19 Sep 2008 13:03:19 -0500
From: "js at cimmeri.com" <js at cimmeri.com>
Subject: re: IMSAI 8080 on eBay
To: cctech at classiccmp.org
Message-ID: <48D3E967.2020104 at cimmeri.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>From: "Mike" <michaelgreen42 at comcast.net>
>Subject: IMSAI 8080 on eBay
>To: <cctech at classiccmp.org>
>Message-ID: <7CA2A42621B44381A42EB354A4390329 at pal>
>Content-Type: text/plain; charset="us-ascii"
>
>I've decided to sell my IMSAI 8080. It is in excellent condition and comes
>with two Discus 8" floppy drives. It has been posted on eBay.
>http://cgi.ebay.com/IMSAI-8080-with-8-Floppy-Drives_W0QQitemZ120307050411QQ
c
>mdZViewItem?hash=item120307050411&_trkparms=72%3A1205|39%3A1|66%3A2|65%3A12
|
>240%3A1318&_trksid=p3286.c0.m14
>
For a big ticket item, that ad is really lacking in pics and information.
I stumbled on a disturbing thing on Ebay. There's a guy who seems to
specialize in taking apart perfectly good classic computer stuff to sell
the pieces. I found him when looking for a VT100. He's selling a naked
CRT that he says was taken from a working VT180. I asked him why. No
answer.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
I seem to recall someone asking for manuals for the Toshiba T1000. I have
the user and tech manuals on Ebay now (item 230296780064). If you're not
on speaking terms with Ebay, email me privately.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
I have a Morrow MicroDecision 3 that won't post and I'm not interested in
restoring it myself. The case is in fair condition with some cracks to
the front. I have at least fifteen MD3 motherboards in storage. What I'm
offering is this nonworking computer and a couple motherboards marked
"good" by whoever put them in the box I found them in -- all this for cost
of shipping.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
-- Dave McGuire <mcguire at neurotica.com> wrote:
On Sep 29, 2008, at 12:57 PM, Roy J. Tellason wrote:
>>>>> http://jet.mox.net/~six/i100.jpg
>>>>
>>>> Hmm, is that not a re-badged AT&T 3B1?
>>>
>>> I have no idea personally.
>>>
>>>> Also, where in the country is it?
>>>
>>> Harrisburg, PA area, or close enough to not matter.
>>
>> It sure looks EXACTLY like a 3B1 to me. It'd be a shame for this
>> to hit the dump.
>
> It won't, since three folks have expressed interest offlist in
> it. :-)
>
>> I can't afford it (even just shipping) right now, but if nobody
>> else lays
>> claim to it, would you be willing to grab it and sit on it for a
>> little bit?
>
> If all else falls through I would, yeah, as opposed to seeing
> stuff just go
> to waste.
>
> Most excellent! The 3B1/7300 is a really nice system, definitely
>worthy of rescue.
>
> -Dave
Yes, especially since this one appears to have an ethernet
adapter, which is an especially scarce item.
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Chris Elmquist wrote:
> BTW, where does a guy find the nice RED plastic lens that is usually put
> in front of a bank of 7-segment displays to hide the view of the parts
> and show only the lighted segments showing through?
>
> Is it just red plexiglass or is there a specific color and transmissive
> capability that is typically used?
If you look for "bezel" in electronics catalogs you'll see both grey and red
filters... but that's a good way to pay a lot of money for ten cents
of plexiglass :-).
The Rohm-Haas color code for the red transluscent
plexiglass you want is #2423, it's fairly common at real plastics
supply houses. Now finding good plastics retail shops that'll sell
or even give away small scraps today is not as easy as 20 years
ago... a 4x8 sheet of this stuff is pretty huge for TIL305's! Shops
that make and sell signs might have some small pieces for you.
Tim.