diff options
Diffstat (limited to 'sys/arch/i386/stand/cga.c')
| -rw-r--r-- | sys/arch/i386/stand/cga.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/sys/arch/i386/stand/cga.c b/sys/arch/i386/stand/cga.c deleted file mode 100644 index d17cf8a9e79..00000000000 --- a/sys/arch/i386/stand/cga.c +++ /dev/null @@ -1,157 +0,0 @@ -/* $OpenBSD: cga.c,v 1.4 1996/09/23 15:23:32 mickey Exp $ */ -/* $NetBSD: cga.c,v 1.3 1994/10/27 04:21:51 cgd Exp $ */ - -/*- - * Copyright (c) 1990 The Regents of the University of California. - * All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * William Jolitz. - * - * 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. - * - * @(#)cga.c 5.3 (Berkeley) 4/28/91 - */ - -#include <sys/param.h> -#include <stand.h> -#include <dev/ic/mc6845.h> - -#define COL 80 -#define ROW 25 -#define CHR 2 -#define MONO_BUF 0xB0000 -#define CGA_BUF 0xB8000 - -static u_char att = 0x7; -u_char *Crtat = (u_char *)CGA_BUF; - -static unsigned int addr_6845 = CGA_BASE; - -void -cursor(pos) - int pos; -{ - outb(addr_6845,CRTC_CURSORH); - outb(addr_6845+1,pos >> 8); - outb(addr_6845,CRTC_CURSORL); - outb(addr_6845+1,pos&0xff); -} - -void -sput(c) - u_char c; -{ - - static u_char *crtat = 0; - unsigned cursorat; u_short was; - u_char *cp; - - if (crtat == 0) { - - /* XXX probe to find if a color or monochrome display */ - was = *(u_short *)Crtat; - *(u_short *)Crtat = 0xA55A; - if (*(u_short *)Crtat != 0xA55A) { - Crtat = (u_char *) MONO_BUF; - addr_6845 = MONO_BASE; - } - *(u_short *)Crtat = was; - - /* Extract cursor location */ - outb(addr_6845,CRTC_CURSORH); - cursorat = inb(addr_6845+1)<<8 ; - outb(addr_6845,CRTC_CURSORL); - cursorat |= inb(addr_6845+1); - - if(cursorat <= COL*ROW) { - crtat = Crtat + cursorat*CHR; - /* att = crtat[1]; /* use current attribute present */ - } else crtat = Crtat; - - /* clean display */ - for (cp = crtat; cp < Crtat+ROW*COL*CHR; cp += 2) { - cp[0] = ' '; - cp[1] = att; - } - } - - switch (c) { - - case '\t': - do - sput(' '); - while ((int)crtat % (8*CHR)); - break; - - case '\010': - crtat -= CHR; - break; - - case '\r': - crtat -= (crtat - Crtat) % (COL*CHR); - break; - - case '\n': - crtat += COL*CHR ; - break; - - default: - crtat[0] = c; - crtat[1] = att; - crtat += CHR; - break ; - } - -#ifndef SMALL - /* implement a scroll */ - if (crtat >= Crtat+COL*ROW*CHR) { - /* move text up */ - bcopy(Crtat+COL*CHR, Crtat, COL*(ROW-1)*CHR); - - /* clear line */ - for (cp = Crtat+ COL*(ROW-1)*CHR; - cp < Crtat + COL*ROW*CHR ; cp += 2) - cp[0] = ' '; - - crtat -= COL*CHR ; - } -#endif - - cursor((crtat-Crtat)/CHR); -} - -void -putchar(c) - int c; -{ - if (c == '\n') - sput('\r'); - sput(c); -} |