10 May
2001
10 May
'01
7:06 p.m.
Take a look at ftp://zane.brouhaha.com/pub/dan/20ma.gif
Dan
-----Original Message-----
From: Megan <mbg(a)world.std.com>
To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org>
Date: Thursday, May 10, 2001 11:35 PM
Subject: In search of 20ma to eia converter
I have an old serial paper tape reader which runs with
20ma and would like to use it to archive all my pdp-11
(and some pdp-8) paper tapes. But I need a converter...
Can anyone help? Any pointers to a simple schematic?
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg KB1FCA |
+--------------------------------+-------------------------------------+
10 May
10 May
7:32 p.m.
New subject: Digital Storage: Computer Age Gets a Valhalla
Good NY Times article on Len Shustek and the gang (free registration
needed):
http://www.nytimes.com/2001/05/10/technology/10MUSE.html
Exerpt:
<<
TWELVE years ago, Keith Uncapher, a computer scientist at the RAND
Corporation, was shocked to discover that the Johnniac, a behemoth of a
computer he had helped develop in the 1950's, had been left out to rust in
a parking lot behind the Museum of Science and Industry in Los Angeles.
After some hasty negotiations, Mr. Uncapher managed to rescue the computer
before it was trucked off to a junkyard. Now the one-of-a-kind Johnniac,
named for the computer pioneer John von Neumann, is safely ensconced 350
miles north, at the Computer Museum History Center here.
>
11 May
11 May
1:30 p.m.
New subject: McI*netting
Since McI's were being discussed.
I picked up what I thought was a 10bT adaptor
for Mac this weekend. It fits the quadra and had
an RJ45, but... It's marked 'Dayna EasyNet'.
Could this be right? Thought it would/should be
an Apple product, being such a basic need.
John A.
7:34 p.m.
New subject: McI*netting
John Allain skrev:
Since McI's were being discussed.
I picked up what I thought was a 10bT adaptor
for Mac this weekend. It fits the quadra and had
an RJ45, but... It's marked 'Dayna EasyNet'.
Could this be right? Thought it would/should be
an Apple product, being such a basic need.
?h? I don't understand what you're getting at. Granted, Apple made Ethernet
adaptors too, but that didn't prevent several other companies from
specialising in that business, just like others specialised in graphic cards.
Unless... you're thinking of an AAUI transceiver. In that case, there are
several explanations; 1) there was a need for such transceivers, and 2) some
third-party cards used AAUI as well, and it wouldn't look good if it came with
an Apple transceiver, would it?
--
En ligne avec Thor 2.6a.
"It is easier to port a shell than a shell script."
--Larry Wall
12 May
12 May
3:23 a.m.
New subject: McI*netting
I't just that an RJ45 didn't Have to be ethernet, so I had to check.
Also, it was small enough that I wasn't even thinking it was a
transciever, so thanks Pete T. Most modern networking cards
pin out at 10bT anyway, wonder what the native signals are here
(Quadra)?
Also I wasn't thinging of the cost angle.
Oh, Apple! Yeah that costs.
John A.
8478
days inactive
8480
days old
4 comments
4 participants
participants (4)
-
allain＠panix.com -
dburrows＠netpath.net -
doug＠blinkenlights.com -
optimus＠canit.se