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Annotation of Net2/arch/hp300/stand/ite_subr.c, revision 1.1

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 $Hdr: ite_subr.c 1.1 89/02/17$
        !            39:  *
        !            40:  *     @(#)ite_subr.c  7.2 (Berkeley) 12/16/90
        !            41:  */
        !            42: 
        !            43: #include "samachdep.h"
        !            44: 
        !            45: #ifdef ITECONSOLE
        !            46: 
        !            47: #include "sys/param.h"
        !            48: #include "../dev/itevar.h"
        !            49: #include "../dev/itereg.h"
        !            50: 
        !            51: ite_devinfo(ip)
        !            52:        struct ite_softc *ip;
        !            53: {
        !            54:        struct fontinfo *fi;
        !            55:        struct font *fd;
        !            56: 
        !            57:        fi = (struct fontinfo *) ((*FONTROM << 8 | *(FONTROM + 2)) + REGADDR);
        !            58:        fd = (struct font *) ((fi->haddr << 8 | fi->laddr) + REGADDR);
        !            59: 
        !            60:        ip->ftheight = fd->fh;
        !            61:        ip->ftwidth  = fd->fw;
        !            62:        ip->fbwidth  = ITEREGS->fbwidth_h << 8 | ITEREGS->fbwidth_l;
        !            63:        ip->fbheight = ITEREGS->fbheight_h << 8 | ITEREGS->fbheight_l;
        !            64:        ip->dwidth   = ITEREGS->dispwidth_h << 8 | ITEREGS->dispwidth_l;
        !            65:        ip->dheight  = ITEREGS->dispheight_h << 8 | ITEREGS->dispheight_l;
        !            66:        ip->rows     = ip->dheight / ip->ftheight;
        !            67:        ip->cols     = ip->dwidth / ip->ftwidth;
        !            68: 
        !            69:        if (ip->fbwidth > ip->dwidth) {
        !            70:                /*
        !            71:                 * Stuff goes to right of display.
        !            72:                 */
        !            73:                ip->fontx    = ip->dwidth;
        !            74:                ip->fonty    = 0;
        !            75:                ip->cpl      = (ip->fbwidth - ip->dwidth) / ip->ftwidth;
        !            76:                ip->cblankx  = ip->dwidth;
        !            77:                ip->cblanky  = ip->fonty + ((128 / ip->cpl) +1) * ip->ftheight;
        !            78:        }
        !            79:        else {
        !            80:                /*
        !            81:                 * Stuff goes below the display.
        !            82:                 */
        !            83:                ip->fontx   = 0;
        !            84:                ip->fonty   = ip->dheight;
        !            85:                ip->cpl     = ip->fbwidth / ip->ftwidth;
        !            86:                ip->cblankx = 0;
        !            87:                ip->cblanky = ip->fonty + ((128 / ip->cpl) + 1) * ip->ftheight;
        !            88:        }
        !            89: }
        !            90: 
        !            91: ite_fontinit(ip)
        !            92:        register struct ite_softc *ip;
        !            93: {
        !            94:        struct fontinfo *fi;
        !            95:        struct font *fd;
        !            96:        register u_char *fbmem, *dp;
        !            97:        register int bn;
        !            98:        int c, l, b;
        !            99: 
        !           100:        fi = (struct fontinfo *) ((*FONTROM << 8 | *(FONTROM + 2)) + REGADDR);
        !           101:        fd = (struct font *) ((fi->haddr << 8 | fi->laddr) + REGADDR);
        !           102: 
        !           103:        dp = fd->data;
        !           104: 
        !           105:        for (c = 0; c < 128; c++) {
        !           106:                fbmem = (u_char *) FBBASE +
        !           107:                        (ip->fonty + (c / ip->cpl) * ip->ftheight) *
        !           108:                        ip->fbwidth;
        !           109:                fbmem += ip->fontx + (c % ip->cpl) * ip->ftwidth;
        !           110:                for (l = 0; l < ip->ftheight; l++) {
        !           111:                        bn = 7;
        !           112:                        for (b = 0; b < ip->ftwidth; b++) {
        !           113:                                if ((1 << bn) & *dp)
        !           114:                                        *fbmem++ = 1;
        !           115:                                else
        !           116:                                        *fbmem++ = 0;
        !           117:                                if (--bn < 0) {
        !           118:                                        bn = 7;
        !           119:                                        dp += 2;
        !           120:                                }
        !           121:                        }
        !           122:                        if (bn < 7)
        !           123:                                dp += 2;
        !           124:                        fbmem -= ip->ftwidth;
        !           125:                        fbmem += ip->fbwidth;
        !           126:                }
        !           127:        }
        !           128: 
        !           129: }
        !           130: #endif

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