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Annotation of Net2/arch/i386/isa/lptreg.h, revision 1.1.1.1

1.1       root        1: /*-
                      2:  * Copyright (c) 1990 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * This code is derived from software contributed to Berkeley by
                      6:  * William Jolitz.
                      7:  *
                      8:  * %sccs.include.noredist.c%
                      9:  *
                     10:  *      @(#)lptreg.h   1.1 (Berkeley) 12/19/90
                     11:  */
                     12: 
                     13: /*
                     14:  * AT Parallel Port (for lineprinter)
                     15:  * Interface port and bit definitions
                     16:  * Written by William Jolitz 12/18/90
                     17:  * Copyright (C) William Jolitz 1990
                     18:  */
                     19: 
                     20: #define lpt_data       0       /* Data to/from printer (R/W) */
                     21: 
                     22: #define lpt_status     1       /* Status of printer (R) */
                     23: #define        LPS_NERR                0x08    /* printer no error */
                     24: #define        LPS_SEL                 0x10    /* printer selected */
                     25: #define        LPS_OUT                 0x20    /* printer out of paper */
                     26: #define        LPS_NACK                0x40    /* printer no ack of data */
                     27: #define        LPS_NBSY                0x80    /* printer no ack of data */
                     28: 
                     29: #define lpt_control    2       /* Control printer (R/W) */
                     30: #define        LPC_STB                 0x01    /* strobe data to printer */
                     31: #define        LPC_AUTOL               0x02    /* automatic linefeed */
                     32: #define        LPC_NINIT               0x04    /* initialize printer */
                     33: #define        LPC_SEL                 0x08    /* printer selected */
                     34: #define        LPC_ENA                 0x10    /* printer out of paper */

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