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ite_subr.c revision 1.7 
      1 /*	$NetBSD: ite_subr.c,v 1.7 2011/02/08 20:20:14 rmind 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. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  *
     36  * from: Utah $Hdr: ite_subr.c 1.2 92/01/20$
     37  *
     38  *	@(#)ite_subr.c	8.1 (Berkeley) 6/10/93
     39  */
     40 
     41 #ifdef ITECONSOLE
     42 
     43 #include <sys/param.h>
     44 
     45 #include <hp300/stand/common/itereg.h>
     46 
     47 #include <hp300/stand/common/samachdep.h>
     48 #include <hp300/stand/common/itevar.h>
     49 
     50 void
     51 ite_fontinfo(struct ite_data *ip)
     52 {
     53 	u_long fontaddr = getword(ip, getword(ip, FONTROM) + FONTADDR);
     54 
     55 	ip->ftheight = getbyte(ip, fontaddr + FONTHEIGHT);
     56 	ip->ftwidth  = getbyte(ip, fontaddr + FONTWIDTH);
     57 	ip->rows     = ip->dheight / ip->ftheight;
     58 	ip->cols     = ip->dwidth / ip->ftwidth;
     59 
     60 	if (ip->fbwidth > ip->dwidth) {
     61 		/*
     62 		 * Stuff goes to right of display.
     63 		 */
     64 		ip->fontx    = ip->dwidth;
     65 		ip->fonty    = 0;
     66 		ip->cpl      = (ip->fbwidth - ip->dwidth) / ip->ftwidth;
     67 		ip->cblankx  = ip->dwidth;
     68 		ip->cblanky  = ip->fonty + ((128 / ip->cpl) +1) * ip->ftheight;
     69 	}
     70 	else {
     71 		/*
     72 		 * Stuff goes below the display.
     73 		 */
     74 		ip->fontx   = 0;
     75 		ip->fonty   = ip->dheight;
     76 		ip->cpl     = ip->fbwidth / ip->ftwidth;
     77 		ip->cblankx = 0;
     78 		ip->cblanky = ip->fonty + ((128 / ip->cpl) + 1) * ip->ftheight;
     79 	}
     80 }
     81 
     82 void
     83 ite_fontinit(struct ite_data *ip)
     84 {
     85 	int bytewidth = (((ip->ftwidth - 1) / 8) + 1);
     86 	int glyphsize = bytewidth * ip->ftheight;
     87 	u_char fontbuf[500];
     88 	u_char *dp, *fbmem;
     89 	int c, i, romp;
     90 
     91 	romp = getword(ip, getword(ip, FONTROM) + FONTADDR) + FONTDATA;
     92 	for (c = 0; c < 128; c++) {
     93 		fbmem = (u_char *)
     94 		    (FBBASE +
     95 		     (ip->fonty + (c / ip->cpl) * ip->ftheight) * ip->fbwidth +
     96 		     (ip->fontx + (c % ip->cpl) * ip->ftwidth));
     97 		dp = fontbuf;
     98 		for (i = 0; i < glyphsize; i++) {
     99 			*dp++ = getbyte(ip, romp);
    100 			romp += 2;
    101 		}
    102 		writeglyph(ip, fbmem, fontbuf);
    103 	}
    104 }
    105 
    106 /*
    107  * Display independent versions of the readbyte and writeglyph routines.
    108  */
    109 u_char
    110 ite_readbyte(struct ite_data *ip, int disp)
    111 {
    112 
    113 	return (u_char)*(((u_char *)ip->regbase) + disp);
    114 }
    115 
    116 void
    117 ite_writeglyph(struct ite_data *ip, u_char *fbmem, u_char *glyphp)
    118 {
    119 	int bn;
    120 	int l, b;
    121 
    122 	for (l = 0; l < ip->ftheight; l++) {
    123 		bn = 7;
    124 		for (b = 0; b < ip->ftwidth; b++) {
    125 			if ((1 << bn) & *glyphp)
    126 				*fbmem++ = 1;
    127 			else
    128 				*fbmem++ = 0;
    129 			if (--bn < 0) {
    130 				bn = 7;
    131 				glyphp++;
    132 			}
    133 		}
    134 		if (bn < 7)
    135 			glyphp++;
    136 		fbmem -= ip->ftwidth;
    137 		fbmem += ip->fbwidth;
    138 	}
    139 }
    140 #endif
    141