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/*-
* 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.
*
* form: @(#)lptreg.h 1.1 (Berkeley) 12/19/90
* $FreeBSD$
*/
/*
* AT Parallel Port (for lineprinter)
* Interface port and bit definitions
* Written by William Jolitz 12/18/90
* Copyright (C) William Jolitz 1990
*/
/*
* modified for PC9801 by A.Kojima
* Kyoto University Microcomputer Club (KMC)
*/
#ifdef PC98
#define lpt_pstb_ctrl (-9) /* PSTB enable control */
#define LPC_EN_PSTB 0xc /* PSTB enable */
#define LPC_DIS_PSTB 0xd /* PSTB disable */
#define lpt_data 0 /* Data to/from printer (R/W) */
#define lpt_status 2 /* Status of printer (R) */
#define LPS_NBSY 0x4 /* printer no ack of data */
#define lpt_control 6 /* Control printer (W) */
#define LPC_MODE8255 0x82 /* 8255 mode */
#define LPC_IRQ8 0x6 /* IRQ8 active */
#define LPC_NIRQ8 0x7 /* IRQ8 inactive */
#define LPC_PSTB 0xe /* PSTB active */
#define LPC_NPSTB 0xf /* PSTB inactive */
#else /* IBM-PC */
#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 /* enable IRQ */
#endif
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