text: /*	$NetBSD: ite_subr.c,v 1.1 1997/02/04 03:52:36 thorpej Exp $	*/
  
  /*
   * Copyright (c) 1988 University of Utah.
   * Copyright (c) 1990, 1993
   *	The Regents of the University of California.  All rights reserved.
   *
   * This code is derived from software contributed to Berkeley by
   * the Systems Programming Group of the University of Utah Computer
   * Science Department.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *	This product includes software developed by the University of
   *	California, Berkeley and its contributors.
   * 4. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   * from: Utah $Hdr: ite_subr.c 1.2 92/01/20$
   *
   *	@(#)ite_subr.c	8.1 (Berkeley) 6/10/93
   */
  
  #ifdef ITECONSOLE
  
  #include <sys/param.h>
  
  #include <hp300/dev/itereg.h>
  
  #include <hp300/stand/common/samachdep.h>
  #include <hp300/stand/common/itevar.h>
  
  ite_fontinfo(ip)
  	struct ite_data *ip;
  {
  	u_long fontaddr = getword(ip, getword(ip, FONTROM) + FONTADDR);
  
  	ip->ftheight = getbyte(ip, fontaddr + FONTHEIGHT);
  	ip->ftwidth  = getbyte(ip, fontaddr + FONTWIDTH);
  	ip->rows     = ip->dheight / ip->ftheight;
  	ip->cols     = ip->dwidth / ip->ftwidth;
  
  	if (ip->fbwidth > ip->dwidth) {
  		/*
  		 * Stuff goes to right of display.
  		 */
  		ip->fontx    = ip->dwidth;
  		ip->fonty    = 0;
  		ip->cpl      = (ip->fbwidth - ip->dwidth) / ip->ftwidth;
  		ip->cblankx  = ip->dwidth;
  		ip->cblanky  = ip->fonty + ((128 / ip->cpl) +1) * ip->ftheight;
  	}
  	else {
  		/*
  		 * Stuff goes below the display.
  		 */
  		ip->fontx   = 0;
  		ip->fonty   = ip->dheight;
  		ip->cpl     = ip->fbwidth / ip->ftwidth;
  		ip->cblankx = 0;
  		ip->cblanky = ip->fonty + ((128 / ip->cpl) + 1) * ip->ftheight;
  	}
  }
  
  ite_fontinit(ip)
  	register struct ite_data *ip;
  {
  	int bytewidth = (((ip->ftwidth - 1) / 8) + 1);
  	int glyphsize = bytewidth * ip->ftheight;
  	u_char fontbuf[500];
  	u_char *dp, *fbmem;
  	int c, i, romp;
  
  	romp = getword(ip, getword(ip, FONTROM) + FONTADDR) + FONTDATA;
  	for (c = 0; c < 128; c++) {
  		fbmem = (u_char *)
  		    (FBBASE +
  		     (ip->fonty + (c / ip->cpl) * ip->ftheight) * ip->fbwidth +
  		     (ip->fontx + (c % ip->cpl) * ip->ftwidth));
  		dp = fontbuf;
  		for (i = 0; i < glyphsize; i++) {
  			*dp++ = getbyte(ip, romp);
  			romp += 2;
  		}
  		writeglyph(ip, fbmem, fontbuf);
  	}
  }
  
  /*
   * Display independent versions of the readbyte and writeglyph routines.
   */
  u_char
  ite_readbyte(ip, disp)
  	struct ite_data *ip;
  	int disp;
  {
  	return((u_char) *(((u_char *)ip->regbase) + disp));
  }
  
  void
  ite_writeglyph(ip, fbmem, glyphp)
  	register struct ite_data *ip;
  	register u_char *fbmem, *glyphp;
  {
  	register int bn;
  	int c, l, b;
  
  	for (l = 0; l < ip->ftheight; l++) {
  		bn = 7;
  		for (b = 0; b < ip->ftwidth; b++) {
  			if ((1 << bn) & *glyphp)
  				*fbmem++ = 1;
  			else
  				*fbmem++ = 0;
  			if (--bn < 0) {
  				bn = 7;
  				glyphp++;
  			}
  		}
  		if (bn < 7)
  			glyphp++;
  		fbmem -= ip->ftwidth;
  		fbmem += ip->fbwidth;
  	}
  }
  #endif
  