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Annotation of Net2/arch/hp300/stand/cons.c, revision 1.1.1.2

1.1       root        1: /*
                      2:  * Copyright (c) 1988 University of Utah.
                      3:  * Copyright (c) 1990 The Regents of the University of California.
                      4:  * All rights reserved.
                      5:  *
                      6:  * This code is derived from software contributed to Berkeley by
                      7:  * the Systems Programming Group of the University of Utah Computer
                      8:  * Science Department.
                      9:  *
                     10:  * Redistribution and use in source and binary forms, with or without
                     11:  * modification, are permitted provided that the following conditions
                     12:  * are met:
                     13:  * 1. Redistributions of source code must retain the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer.
                     15:  * 2. Redistributions in binary form must reproduce the above copyright
                     16:  *    notice, this list of conditions and the following disclaimer in the
                     17:  *    documentation and/or other materials provided with the distribution.
                     18:  * 3. All advertising materials mentioning features or use of this software
                     19:  *    must display the following acknowledgement:
                     20:  *     This product includes software developed by the University of
                     21:  *     California, Berkeley and its contributors.
                     22:  * 4. Neither the name of the University nor the names of its contributors
                     23:  *    may be used to endorse or promote products derived from this software
                     24:  *    without specific prior written permission.
                     25:  *
                     26:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     27:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     28:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     29:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     30:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     31:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     32:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     33:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     34:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     35:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     36:  * SUCH DAMAGE.
                     37:  *
                     38:  * from: Utah $Hdr: cons.c 1.5 89/08/22$
                     39:  *
1.1.1.2 ! root       40:  *     from: @(#)cons.c        7.4 (Berkeley) 5/5/91
        !            41:  *     cons.c,v 1.2 1993/05/22 07:58:47 cgd Exp
1.1       root       42:  */
                     43: 
                     44: #include "sys/param.h"
                     45: #include "samachdep.h"
                     46: #include "../hp300/cons.h"
                     47: 
                     48: #ifdef ITECONSOLE
                     49: int    iteprobe(), iteinit(), itegetchar(), iteputchar();
                     50: #endif
                     51: #ifdef DCACONSOLE
                     52: int    dcaprobe(), dcainit(), dcagetchar(), dcaputchar();
                     53: #endif
                     54: #ifdef DCMCONSOLE
                     55: int    dcmprobe(), dcminit(), dcmgetchar(), dcmputchar();
                     56: #endif
                     57: 
                     58: struct consdev constab[] = {
                     59: #ifdef ITECONSOLE
                     60:        { iteprobe,     iteinit,        itegetchar,     iteputchar },
                     61: #endif
                     62: #ifdef DCACONSOLE
                     63:        { dcaprobe,     dcainit,        dcagetchar,     dcaputchar },
                     64: #endif
                     65: #ifdef DCMCONSOLE
                     66:        { dcmprobe,     dcminit,        dcmgetchar,     dcmputchar },
                     67: #endif
                     68:        { 0 },
                     69: };
                     70: 
                     71: struct consdev *cn_tab;
                     72: int noconsole;
                     73: 
                     74: cninit()
                     75: {
                     76:        register struct consdev *cp;
                     77: 
                     78:        cn_tab = NULL;
                     79:        noconsole = 1;
                     80:        for (cp = constab; cp->cn_probe; cp++) {
                     81:                (*cp->cn_probe)(cp);
                     82:                if (cp->cn_pri > CN_DEAD &&
                     83:                    (cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri))
                     84:                        cn_tab = cp;
                     85:        }
                     86:        if (cn_tab) {
                     87:                (*cn_tab->cn_init)(cn_tab);
                     88:                noconsole = 0;
                     89:        }
                     90: }
                     91: 
                     92: cngetc()
                     93: {
                     94:        if (cn_tab)
                     95:                return((*cn_tab->cn_getc)());
                     96:        return(0);
                     97: }
                     98: 
                     99: cnputc(c)
                    100:        int c;
                    101: {
                    102:        if (cn_tab)
                    103:                (*cn_tab->cn_putc)(c);
                    104: }

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