Found one of these in a scrap pile today. I'm thinking of stuffing it into
my old PC to get a bit better performace without permanently altering the
PC. Can anyone give me more information about it? What are the large
connectors at the top and bottom of the card for? What is the PLCC socket
for? Do I need drivers for the card? etc
Joe
PS I just noticed that even though they call it a 386i it actually has an
intel 8086-2 CPU.
Ok... What did he write?
Ed Tillman
Store Automation Tech Support Specialist
Valero Energy Corporation
San Antonio, Texas, USA
Office: (210)592-3110, Fax (210)592-2048
Email: edward.tillman(a)valero.com <mailto:edward.tillman@valero.com>
-----Original Message-----
From: Steven M Jones [mailto:classiccmp@crash.com]
Sent: Wednesday, October 08, 2003 12:45 AM
To: cctalk(a)classiccmp.org
Subject: Re: anyone notice this gorgeous piece?
Jay West wrote:
Is it just me or are there a lot of people posting to the list
responding to things that are non existent or ancient from an archive
or something? Especially these people mentioning a web site and
asking to buy something. Seems that there has been a lot of that
lately.
--
/------------------------------------\
| http://jrollins.tripod.com/ |
| KD7BCY kd7bcy(a)teleport.com |
\------------------------------------/
>It takes more than ROMs. The SE originally shipped with the original
>IWM floppy controller, which cannot handle MFM disk format (either 720K
>or 1440K floppies). To use the Apple Superdrive (FDHD) 1440K drive,
>you need BOTH the newer ROMs and the newer SWIM floppy controller.
Then does that mean there weren't any 3rd party 1.4 drives that could be
used on the 800k SE? I thought there were. Although maybe they were and
used SCSI, or their drivers just had a way to get around the floppy
controller short comings.
-chris
<http://www.mythtech.net>
>Was there such a thing as an external 1.44 drive? If there was
>could my SE use it?
Yes, and maybe.
The ROMS in the SE dictate that it can't use more than an 800k drive. So
a standard external 1.4 drive will still only operate as an 800k drive in
an SE that doesn't have the newer FDHD roms (if it works at all).
However, I do believe there were drives that had special drivers that let
the SE use 1.4 disks. I'm just not sure of brands or availability.
-chris
<http://www.mythtech.net>
I am looking for information on an IBM 5110 computer system. In cleaning out a storage area at work, my boss discovered this computer. It was bought new in 1978 for $ 20,000 and worked the last time in operation. I am looking for information such as the current asking price for this vintage model. My boss is interested in selling this item (if you are interested).
Any information would be greatly appreciated.
Thank you.
R. Dooley
---------------------------------
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The New Yahoo! Shopping - with improved product search
I have been working on a DEC Pro 380 and the LK201 keyboard I have
causes the Pro to report a stuck key and hang. So I opened up the
keyboard thinking I could clean out whatever had jammed in there.
Looking at it, I don't quite know how this thing works. Each key is
supported by a "cantilever" spring. This spring has a piece that looks
like it has a contact of some sort, but this is all on top of a layer of
rubber and it doesn't even look like the "contact" touches the rubber.
Below the rubber is a piece of clear, flexible plastic with circuits on it.
So does anybody know how this thing works? Contacts? Capacitive?
Inductive? Has anybody ever fixed one?
-chuck
>I have been attempting to get my ASR33 teletype connected to something
>and communicating, but so far I have not been successful. I have built
>the interface here :
>http://www.daedalus.co.nz/~don/computing/20mahack.html
It wont work, sorry...
Teletypes are inductive loads. Though they only want 20 mils, the
voltage needs to be high to get the initial magnet pull-in (basic RL
theory). ASR33 loops were generally run at 100V or so, but I run my
Model 28 at 14V, with non-perfect error rate, and I don't use the
keyboard.
The keyboard and printer are IN SERIES. If you hit keys while it's
printing you foul it up. Normal.
Because it's inductive, it makes a spike when yuo turn the voltage off.
You need to suppress this with a diode, a resistor and capacitor, for
example.
They're not subtle interfaces, and weren't meant to be.
If you just want to print, you can rig up a power transistor, two
resistors, a diode, and a high-voltage DC power supply to do the trick,
and drive it from the serial port.
If you want to receieve also, you can use another transistor and
resistor to pick off the change in loop current that happens when you
press keys which open the loop, and drive the serial port.
I've done one of these fairly recently, and if poked with a
not-too-sharp stick, I'll scan the schematic and pu on my website.
