Description: Parallel Interface Card: 3rd Party Printers (11/96)
Header: Parallel Interface Card: 3rd Party Printers (11/96)

 Article Created: 06 February 86
 Article Reviewed/Updated: 19 November 1996

 TOPIC -----------------------------------------------------------

 This article discusses connecting the Parallel Interface card to different
 3rd party printers.

 DISCUSSION ------------------------------------------------------

 Epson FX 80
 ===========

 General Settings
 ----------------
 Parallel Interface
 8 Data Bits
 Linefeeds required


 Epson DIP switches
 ------------------
 Switch Bank 1                  Switch bank 2

 1 OFF                          1 ON
 2 OFF (see notes)              2 ON
 3 OFF (see notes)              3 OFF
 4 OFF                          4 OFF (see notes)
 5 OFF (see notes)
 6 ON
 7 ON
 8 ON


 Bank 1
 ------
 Switch 2 is set for open zero character; for slashed zero, turn switch 2 on.
 Switch 3 is set for continuous paper; for cut sheet, turn switch 3 on.
 Switch 5 is set for normal density printing at power on; for emphasized
 printing, turn switch 5 on.

 Bank 2
 ------
 Switch 4 is set for computer generated carriage return linefeed; for carriage
 return only, turn switch 4 on.

 Parallel Interface
 ------------------
 All switches on the Apple interface card need to be set to factory default
 settings.


 Cable Pinouts
 -------------

 Apple II Parallel      Epson
      CABLE SHIELD ---- 1
 5 -------------------- 14
 6 -------------------- 13
 8 -------------------- 12
 11 --------------------  9
 12 -------------------- 15
 13 -------------------- 16
 22 -------------------- 11
 23 -------------------- 10
 15 --------------------  3
 16 -------------------- 22
 4 --------------------  7
 7 -------------------- REMOVE PIN


 Centronics 702 or 703
 =====================
 The Centronics printer interface was originally designed to be used with the
 Centronics microP-1 printer. That printer required a control character to set
 it into 80-column mode. The firmware on the Centronics printer interface,
 PROM P9-00, sends a $1D when ever it receives the <CTRL-I>80N command. This
 control character is part of a VFU command on a Centronics 702 or 703 and
 usually deselects the printer. The fix is to send a re-select code, but since
 the deselected printer doesn't return the Apple's handshake, the reselect
 will have to be POKEd to the interface, as follows:

 100 FOR J = 1 TO 5
 110 POKE -16256 + 16 * SL, 17
 120 NEXT


 Comrex CR-1 P
 =============
 Card                    COMREX CR-1 P

 5----------------- DB0------2
 6----------------- DB1------3
 8----------------- DB2------4
 11-----------------DB5------7
 12-----------------DB6------8
 13-----------------DB7------9
 15-----------------STB------1
 16-----------------ACK------10
 22-----------------DB3------5
 23-----------------DB4------6
 24-----------------SG------ 16


 Dip Switch settings
 -------------------
 For Parallel card:  All down except 4,5
 For Comrex: all down except 8


 Article Change History:
 19 Nov 1996 - Reviewed for technical accuracy, revised formatting.
 Copyright 1986-96, Apple Computer, Inc.
 Keywords: