Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 9/18/84; site brl-tgr.ARPA
Path: utzoo!linus!philabs!cmcl2!seismo!brl-tgr!internet!Eaton@HI-MULTICS.ARPA
From: Eaton@HI-MULTICS.ARPA
Newsgroups: net.micro.cpm
Subject: RE: IEEE-488/CENTRONICS on OSBORNE
Message-ID: <6021@brl-tgr.ARPA>
Date: Thu, 22-Nov-84 04:53:31 EST
Article-I.D.: brl-tgr.6021
Posted: Thu Nov 22 04:53:31 1984
Date-Received: Sat, 24-Nov-84 01:55:32 EST
Sender: news@brl-tgr.ARPA
Organization: Ballistic Research Lab
Lines: 28

Ron, the following diagram should allow you to connect the OSBORNE EXECUTIVE'S
IEEE-488 port to a CENTRONICS port:

IEEE-488              CENTRONICS

1  ------- DATA0 (LSB) -----> 2
2  ------- DATA1 -----------> 3
3  ------- DATA2 -----------> 4
4  ------- DATA3 -----------> 5
13 ------- DATA4 -----------> 6
14 ------- DATA5 -----------> 7
15 ------- DATA6 (MSB)------> 8
16 ------- DATA7 (PAR) -----> 9
6  ------- STROBE* ---------> 1
12 ------- GROUND ----------> 19
8  <------ BUSY ------------- 11

NOTE: STROBE IS NORMALLY NEGATIVE GOING PULSE.
      BUSY LINE IS HIGH WHEN PRINTER IS BUSY.  THERE ARE PULLUP
      RESISTORS ON THE IEEE-488 WHICH PULL THIS LINE HIGH IF THE CABLE IS
      UNPLUGGED OR IS WIRED INCORRECTLY.


GOOD LUCK AND LET ME KNOW HOW IT TURNS OUT.  I STILL HAVE TO REWIRE MY CABLE
AS I TOO USED THE DIAGRAM ON PAGE 445 IN THE SYSTEM REFERENCE MANUAL.  WE
"BOTH" KNOW THAT IS OUT TO LUNCH.

Jesse (all for better, more correctter documintasion) Eaton.HFED@HI-MULTICS