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ite_subr.c revision 1.1 
      1 /*	$NetBSD: ite_subr.c,v 1.1 1997/02/04 03:52:36 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988 University of Utah.
      5  * Copyright (c) 1990, 1993
      6  *	The Regents of the University of California.  All rights reserved.
      7  *
      8  * This code is derived from software contributed to Berkeley by
      9  * the Systems Programming Group of the University of Utah Computer
     10  * Science Department.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. All advertising materials mentioning features or use of this software
     21  *    must display the following acknowledgement:
     22  *	This product includes software developed by the University of
     23  *	California, Berkeley and its contributors.
     24  * 4. Neither the name of the University nor the names of its contributors
     25  *    may be used to endorse or promote products derived from this software
     26  *    without specific prior written permission.
     27  *
     28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     38  * SUCH DAMAGE.
     39  *
     40  * from: Utah $Hdr: ite_subr.c 1.2 92/01/20$
     41  *
     42  *	@(#)ite_subr.c	8.1 (Berkeley) 6/10/93
     43  */
     44 
     45 #ifdef ITECONSOLE
     46 
     47 #include <sys/param.h>
     48 
     49 #include <hp300/dev/itereg.h>
     50 
     51 #include <hp300/stand/common/samachdep.h>
     52 #include <hp300/stand/common/itevar.h>
     53 
     54 ite_fontinfo(ip)
     55 	struct ite_data *ip;
     56 {
     57 	u_long fontaddr = getword(ip, getword(ip, FONTROM) + FONTADDR);
     58 
     59 	ip->ftheight = getbyte(ip, fontaddr + FONTHEIGHT);
     60 	ip->ftwidth  = getbyte(ip, fontaddr + FONTWIDTH);
     61 	ip->rows     = ip->dheight / ip->ftheight;
     62 	ip->cols     = ip->dwidth / ip->ftwidth;
     63 
     64 	if (ip->fbwidth > ip->dwidth) {
     65 		/*
     66 		 * Stuff goes to right of display.
     67 		 */
     68 		ip->fontx    = ip->dwidth;
     69 		ip->fonty    = 0;
     70 		ip->cpl      = (ip->fbwidth - ip->dwidth) / ip->ftwidth;
     71 		ip->cblankx  = ip->dwidth;
     72 		ip->cblanky  = ip->fonty + ((128 / ip->cpl) +1) * ip->ftheight;
     73 	}
     74 	else {
     75 		/*
     76 		 * Stuff goes below the display.
     77 		 */
     78 		ip->fontx   = 0;
     79 		ip->fonty   = ip->dheight;
     80 		ip->cpl     = ip->fbwidth / ip->ftwidth;
     81 		ip->cblankx = 0;
     82 		ip->cblanky = ip->fonty + ((128 / ip->cpl) + 1) * ip->ftheight;
     83 	}
     84 }
     85 
     86 ite_fontinit(ip)
     87 	register struct ite_data *ip;
     88 {
     89 	int bytewidth = (((ip->ftwidth - 1) / 8) + 1);
     90 	int glyphsize = bytewidth * ip->ftheight;
     91 	u_char fontbuf[500];
     92 	u_char *dp, *fbmem;
     93 	int c, i, romp;
     94 
     95 	romp = getword(ip, getword(ip, FONTROM) + FONTADDR) + FONTDATA;
     96 	for (c = 0; c < 128; c++) {
     97 		fbmem = (u_char *)
     98 		    (FBBASE +
     99 		     (ip->fonty + (c / ip->cpl) * ip->ftheight) * ip->fbwidth +
    100 		     (ip->fontx + (c % ip->cpl) * ip->ftwidth));
    101 		dp = fontbuf;
    102 		for (i = 0; i < glyphsize; i++) {
    103 			*dp++ = getbyte(ip, romp);
    104 			romp += 2;
    105 		}
    106 		writeglyph(ip, fbmem, fontbuf);
    107 	}
    108 }
    109 
    110 /*
    111  * Display independent versions of the readbyte and writeglyph routines.
    112  */
    113 u_char
    114 ite_readbyte(ip, disp)
    115 	struct ite_data *ip;
    116 	int disp;
    117 {
    118 	return((u_char) *(((u_char *)ip->regbase) + disp));
    119 }
    120 
    121 void
    122 ite_writeglyph(ip, fbmem, glyphp)
    123 	register struct ite_data *ip;
    124 	register u_char *fbmem, *glyphp;
    125 {
    126 	register int bn;
    127 	int c, l, b;
    128 
    129 	for (l = 0; l < ip->ftheight; l++) {
    130 		bn = 7;
    131 		for (b = 0; b < ip->ftwidth; b++) {
    132 			if ((1 << bn) & *glyphp)
    133 				*fbmem++ = 1;
    134 			else
    135 				*fbmem++ = 0;
    136 			if (--bn < 0) {
    137 				bn = 7;
    138 				glyphp++;
    139 			}
    140 		}
    141 		if (bn < 7)
    142 			glyphp++;
    143 		fbmem -= ip->ftwidth;
    144 		fbmem += ip->fbwidth;
    145 	}
    146 }
    147 #endif
    148