New find: HP 1000 E series

From: Frank McConnell <fmc_at_reanimators.org>
Date: Fri Jun 16 22:07:08 2000

Carlos Murillo-Sanchez <cem14_at_cornell.edu> wrote:
> Thanks a lot for all this! The cable halves that I have
> are marked either "12966-60015 ASYNC DATA STRAPPED FOR 9600 BAUD"
> or "12966-60008 ASYNC DATA". Fortunately, the numbering in the
> back of the card edge connector corresponds to the 1-24 (top, left
> to right) and A-Z,AA-BB (bottom, left to right) numbering. The 60015
> option has quite a few more cross-connects than the 60004 option.

This time around I'm looking at a newer (April 1984) revision of the
same manual and it has three (!) descriptions of the -60015 cable,
two for HP 2621B terminals, and one for HP 264X terminals.

Cross-connects inside the card-edge hood appear the same for all
descriptions of this cable:

  (F, X, Y, AA)
  (H, K)
  (N, 8, 12, 13, 14, 15) (these strap it for 9600 baud)
  (W, 5)
  (4, 21)
  (11, 22)

And for the far end of the cable, the 2621B flavors looks like they
could be going to a DB25:

  A -> 7 (Signal Ground)
  D -> 3 (Transmit Data)
  E -> 5, 6 (Request to Send)
  F -> 8 (Data Terminal Ready)
  S -> 2 (Received Data)
  X -> 4 (Clear to Send)

-60008 looks like it's supposed to be for a 264X terminal (to the
card-edge connector on the datacomm board) and has slightly different
cross-connects:

  (A, 1, 12, 13, 14, 15)
  (F, X, Y, AA)
  (H, K)
  (N, 8)
  (W, 5)
  (4, 21)
  (11, 22)

As far as I can tell, this is strapped for external clocking from the
terminal.

I guess it's time for that table about how to strap for a baud rate:

Baud Rate Bit Yield Pin 8 to pins: Pin 1, A, 24, BB to pins:
  Ext (16X) 0000 N 12, 13, 14, 15
   50 0001 14, N 12, 13, 15
   75 0010 13, N 12, 14, 15
  110 0011 13, 14, N 12, 15
  134.5 0100 12, N 13, 14, 15
  150 0101 12, 14, N 13, 15
  300 0110 12, 13, N 14, 15
  600 0111 12, 13, 14, N 15
  900 1000 15, N 12, 13, 14
 1200 1001 14, 15, N 12, 13
 1800 1010 13, 15, N 12, 14
 2400 1011 13, 14, 15, N 12
 3600 1100 12, 15, N 13, 14
 4800 1101 12, 14, 15, N 13
 7200 1110 12, 13, 15, N 14
 9600 1111 12, 13, 14, 15, N --

> Looks like the labeling of TD and RD signals in your docs
> indicate that the card thinks of itself as DTE, and the cable
> that you describe is actually a null modem-like cable w/o
> handshake. All this should be enough for me to build a simple
> cable and test this over the weekend.

That would be about right, I think. The HP terminals that I'm
familiar with generally had cables whose far ends were a
DB25 plug that wanted to plug into a DCE-flavored connector.

Good luck!

-Frank McConnell
Received on Fri Jun 16 2000 - 22:07:08 BST