35 lines
1.0 KiB
C
35 lines
1.0 KiB
C
|
/*-
|
||
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This code is derived from software contributed to Berkeley by
|
||
|
|
* William Jolitz.
|
||
|
|
*
|
||
|
|
* %sccs.include.noredist.c%
|
||
|
|
*
|
||
|
|
* @(#)lptreg.h 1.1 (Berkeley) 12/19/90
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* AT Parallel Port (for lineprinter)
|
||
|
|
* Interface port and bit definitions
|
||
|
|
* Written by William Jolitz 12/18/90
|
||
|
|
* Copyright (C) William Jolitz 1990
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define lpt_data 0 /* Data to/from printer (R/W) */
|
||
|
|
|
||
|
|
#define lpt_status 1 /* Status of printer (R) */
|
||
|
|
#define LPS_NERR 0x08 /* printer no error */
|
||
|
|
#define LPS_SEL 0x10 /* printer selected */
|
||
|
|
#define LPS_OUT 0x20 /* printer out of paper */
|
||
|
|
#define LPS_NACK 0x40 /* printer no ack of data */
|
||
|
|
#define LPS_NBSY 0x80 /* printer no ack of data */
|
||
|
|
|
||
|
|
#define lpt_control 2 /* Control printer (R/W) */
|
||
|
|
#define LPC_STB 0x01 /* strobe data to printer */
|
||
|
|
#define LPC_AUTOL 0x02 /* automatic linefeed */
|
||
|
|
#define LPC_NINIT 0x04 /* initialize printer */
|
||
|
|
#define LPC_SEL 0x08 /* printer selected */
|
||
|
|
#define LPC_ENA 0x10 /* printer out of paper */
|