/*
 * $Id: emxvga.trm,v 1.12 2004/04/13 17:24:16 broeker Exp $
 */

/* GNUPLOT - emxvga.trm */

/*[
 * Copyright 1994, 1998, 2004
 *
 * Permission to use, copy, and distribute this software and its
 * documentation for any purpose with or without fee is hereby granted,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.
 *
 * Permission to modify the software is granted, but not the right to
 * distribute the complete modified source code.  Modifications are to
 * be distributed as patches to the released version.  Permission to
 * distribute binaries produced by compiling modified sources is granted,
 * provided you
 *   1. distribute the corresponding source modifications from the
 *    released version in the form of a patch file along with the binaries,
 *   2. add special version identification to distinguish your version
 *    in addition to the base release version number,
 *   3. provide your name and address as the primary contact for the
 *    support of your modified version, and
 *   4. retain our contact information in regard to use of the base
 *    software.
 * Permission to distribute the released version of the source code along
 * with corresponding source modifications in the form of a patch file is
 * granted with same provisions 2 through 4 for binary distributions.
 *
 * This software is provided "as is" without express or implied warranty
 * to the extent permitted by applicable law.
]*/

/*
 * This file is included by ../term.c.
 *
 * This terminal driver supports:
 *  SVGA 1024x768x256 for PC's running DOS or OS/2
 *
 * AUTHOR
 *   David J. Liu (liudj0@minerva.cis.yale.edu)
 */
/*
 * Compile with GCC (emx) with VESA and SVGAKIT maintained by
 * Johannes Martin (JMARTIN@GOOFY.ZDV.UNI-MAINZ.DE)
 * with additions by David J. Liu (liudj0@minerva.cis.yale.edu)
 * supports VESA, Trident, Cirrus, ET4000, WD and S3.
 */
/* 
 * adapted to the new terminal layout by Stefan Bodewig (Dec. 1995)
 */

#include "driver.h"

#ifdef TERM_REGISTER
#ifdef EMXVESA
register_term(vesa)
#endif /* EMXVESA */
register_term(emxvga)
#endif

#ifdef TERM_PROTO
TERM_PUBLIC void EMXVGA_init __PROTO((void));
TERM_PUBLIC void EMXVGA_reset __PROTO((void));
TERM_PUBLIC void EMXVGA_text __PROTO((void));
TERM_PUBLIC void EMXVGA_graphics __PROTO((void));
TERM_PUBLIC void EMXVGA_linetype __PROTO((int));
TERM_PUBLIC void EMXVGA_move __PROTO((unsigned int, unsigned int));
TERM_PUBLIC void EMXVGA_vector __PROTO((unsigned int, unsigned int));
TERM_PUBLIC int EMXVGA_text_angle __PROTO((int));
TERM_PUBLIC void EMXVGA_put_text __PROTO((unsigned int, unsigned int, const char *));
#define EMXVGA_VCHAR 8
#define EMXVGA_HCHAR 8
#define EMXVGA_VTIC 4
#define EMXVGA_HTIC 4
#define EMXVGA_XMAX 0		/* These two entries are just place holders. */
#define EMXVGA_YMAX 0		/* The actual values will be filled in init. */
#ifdef EMXVESA
TERM_PUBLIC void EMXVESA_options __PROTO((void));
TERM_PUBLIC void EMXVESA_init __PROTO((void));
TERM_PUBLIC void EMXVESA_graphics __PROTO((void));
TERM_PUBLIC void EMXVESA_text __PROTO((void));
TERM_PUBLIC void EMXVESA_reset __PROTO((void));
#endif
#endif /* TERM_PROTO */
#ifndef TERM_PROTO_ONLY
#ifdef TERM_BODY
/* avoid name clash with graph.h - lets hope that no following
 * driver needs these symbols !
 */
#ifdef RIGHT
#undef RIGHT
#endif
#ifdef DOWN
#undef DOWN
#endif
#include <vesa.h>
#include <jmgraph.h>
#include <conio.h>		/* for getch()            -SB */
#include <stdlib.h>
#include <dos.h>
/*
 * Some versions of graph.h (e.g. jmgraph.h) define RIGHT to be 0
 * colliding with enum JUSTIFY. We don't need this define anyway,
 * just undef it.			-SB
 */
#ifdef RIGHT
#undef RIGHT
#endif
#ifdef DOWN
#undef DOWN
#endif
static int EMXVGA_vmode = G640x480x256;		/* default mode */
static int vgacolor[] ={ 7, 8, 2, 3, 4, 5, 9, 14, 12, 15, 13, 10, 11, 1, 6 };
static int graphics_on = FALSE;
int startx, starty, lasty;
int EMXVGA_angle, EMXVGA_color;
char *EMXVGA_buf;

void
emx_getch()
{
    union REGS reg;
    char c;
    if (_osmode == OS2_MODE)
	VesaGetCharacter(&c);
    else {
	reg.x.ax = 0x0000;
	_int86(0x16, &reg, &reg);
	if (reg.h.al == 0) {
	    reg.x.ax = 0x0000;
	    _int86(0x16, &reg, &reg);
	}
    }
}

/* gstring.c (emx+gcc) -- Copyright (c) 1994 by David J. Liu */
unsigned char font[128][8] =
{				/* 8x8 font */
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
    {0x7E, 0x81, 0xA5, 0x81, 0xBD, 0x99, 0x81, 0x7E},
    {0x7E, 0xFF, 0xDB, 0xFF, 0xC3, 0xE7, 0xFF, 0x7E},
    {0x6C, 0xFE, 0xFE, 0xFE, 0x7C, 0x38, 0x10, 0x00},
    {0x10, 0x38, 0x7C, 0xFE, 0x7C, 0x38, 0x10, 0x00},
    {0x38, 0x7C, 0x38, 0xFE, 0xFE, 0x92, 0x10, 0x7C},
    {0x00, 0x10, 0x38, 0x7C, 0xFE, 0x7C, 0x38, 0x7C},
    {0x00, 0x00, 0x18, 0x3C, 0x3C, 0x18, 0x00, 0x00},
    {0xFF, 0xFF, 0xE7, 0xC3, 0xC3, 0xE7, 0xFF, 0xFF},
    {0x00, 0x3C, 0x66, 0x42, 0x42, 0x66, 0x3C, 0x00},
    {0xFF, 0xC3, 0x99, 0xBD, 0xBD, 0x99, 0xC3, 0xFF},
    {0x0F, 0x07, 0x0F, 0x7D, 0xCC, 0xCC, 0xCC, 0x78},
    {0x3C, 0x66, 0x66, 0x66, 0x3C, 0x18, 0x7E, 0x18},
    {0x3F, 0x33, 0x3F, 0x30, 0x30, 0x70, 0xF0, 0xE0},
    {0x7F, 0x63, 0x7F, 0x63, 0x63, 0x67, 0xE6, 0xC0},
    {0x99, 0x5A, 0x3C, 0xE7, 0xE7, 0x3C, 0x5A, 0x99},
    {0x80, 0xE0, 0xF8, 0xFE, 0xF8, 0xE0, 0x80, 0x00},
    {0x02, 0x0E, 0x3E, 0xFE, 0x3E, 0x0E, 0x02, 0x00},
    {0x18, 0x3C, 0x7E, 0x18, 0x18, 0x7E, 0x3C, 0x18},
    {0x66, 0x66, 0x66, 0x66, 0x66, 0x00, 0x66, 0x00},
    {0x7F, 0xDB, 0xDB, 0x7B, 0x1B, 0x1B, 0x1B, 0x00},
    {0x3E, 0x63, 0x38, 0x6C, 0x6C, 0x38, 0x86, 0xFC},
    {0x00, 0x00, 0x00, 0x00, 0x7E, 0x7E, 0x7E, 0x00},
    {0x18, 0x3C, 0x7E, 0x18, 0x7E, 0x3C, 0x18, 0xFF},
    {0x18, 0x3C, 0x7E, 0x18, 0x18, 0x18, 0x18, 0x00},
    {0x18, 0x18, 0x18, 0x18, 0x7E, 0x3C, 0x18, 0x00},
    {0x00, 0x18, 0x0C, 0xFE, 0x0C, 0x18, 0x00, 0x00},
    {0x00, 0x30, 0x60, 0xFE, 0x60, 0x30, 0x00, 0x00},
    {0x00, 0x00, 0xC0, 0xC0, 0xC0, 0xFE, 0x00, 0x00},
    {0x00, 0x24, 0x66, 0xFF, 0x66, 0x24, 0x00, 0x00},
    {0x00, 0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0x00, 0x00},
    {0x00, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0x00, 0x00},
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
    {0x18, 0x3C, 0x3C, 0x18, 0x18, 0x00, 0x18, 0x00},
    {0x6C, 0x6C, 0x6C, 0x00, 0x00, 0x00, 0x00, 0x00},
    {0x6C, 0x6C, 0xFE, 0x6C, 0xFE, 0x6C, 0x6C, 0x00},
    {0x18, 0x7E, 0xC0, 0x7C, 0x06, 0xFC, 0x18, 0x00},
    {0x00, 0xC6, 0xCC, 0x18, 0x30, 0x66, 0xC6, 0x00},
    {0x38, 0x6C, 0x38, 0x76, 0xDC, 0xCC, 0x76, 0x00},
    {0x30, 0x30, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00},
    {0x18, 0x30, 0x60, 0x60, 0x60, 0x30, 0x18, 0x00},
    {0x60, 0x30, 0x18, 0x18, 0x18, 0x30, 0x60, 0x00},
    {0x00, 0x66, 0x3C, 0xFF, 0x3C, 0x66, 0x00, 0x00},
    {0x00, 0x18, 0x18, 0x7E, 0x18, 0x18, 0x00, 0x00},
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x30},
    {0x00, 0x00, 0x00, 0x7E, 0x00, 0x00, 0x00, 0x00},
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00},
    {0x06, 0x0C, 0x18, 0x30, 0x60, 0xC0, 0x80, 0x00},
    {0x7C, 0xCE, 0xDE, 0xF6, 0xE6, 0xC6, 0x7C, 0x00},
    {0x30, 0x70, 0x30, 0x30, 0x30, 0x30, 0xFC, 0x00},
    {0x78, 0xCC, 0x0C, 0x38, 0x60, 0xCC, 0xFC, 0x00},
    {0x78, 0xCC, 0x0C, 0x38, 0x0C, 0xCC, 0x78, 0x00},
    {0x1C, 0x3C, 0x6C, 0xCC, 0xFE, 0x0C, 0x1E, 0x00},
    {0xFC, 0xC0, 0xF8, 0x0C, 0x0C, 0xCC, 0x78, 0x00},
    {0x38, 0x60, 0xC0, 0xF8, 0xCC, 0xCC, 0x78, 0x00},
    {0xFC, 0xCC, 0x0C, 0x18, 0x30, 0x30, 0x30, 0x00},
    {0x78, 0xCC, 0xCC, 0x78, 0xCC, 0xCC, 0x78, 0x00},
    {0x78, 0xCC, 0xCC, 0x7C, 0x0C, 0x18, 0x70, 0x00},
    {0x00, 0x18, 0x18, 0x00, 0x00, 0x18, 0x18, 0x00},
    {0x00, 0x18, 0x18, 0x00, 0x00, 0x18, 0x18, 0x30},
    {0x18, 0x30, 0x60, 0xC0, 0x60, 0x30, 0x18, 0x00},
    {0x00, 0x00, 0x7E, 0x00, 0x7E, 0x00, 0x00, 0x00},
    {0x60, 0x30, 0x18, 0x0C, 0x18, 0x30, 0x60, 0x00},
    {0x3C, 0x66, 0x0C, 0x18, 0x18, 0x00, 0x18, 0x00},
    {0x7C, 0xC6, 0xDE, 0xDE, 0xDC, 0xC0, 0x7C, 0x00},
    {0x30, 0x78, 0xCC, 0xCC, 0xFC, 0xCC, 0xCC, 0x00},
    {0xFC, 0x66, 0x66, 0x7C, 0x66, 0x66, 0xFC, 0x00},
    {0x3C, 0x66, 0xC0, 0xC0, 0xC0, 0x66, 0x3C, 0x00},
    {0xF8, 0x6C, 0x66, 0x66, 0x66, 0x6C, 0xF8, 0x00},
    {0xFE, 0x62, 0x68, 0x78, 0x68, 0x62, 0xFE, 0x00},
    {0xFE, 0x62, 0x68, 0x78, 0x68, 0x60, 0xF0, 0x00},
    {0x3C, 0x66, 0xC0, 0xC0, 0xCE, 0x66, 0x3A, 0x00},
    {0xCC, 0xCC, 0xCC, 0xFC, 0xCC, 0xCC, 0xCC, 0x00},
    {0x78, 0x30, 0x30, 0x30, 0x30, 0x30, 0x78, 0x00},
    {0x1E, 0x0C, 0x0C, 0x0C, 0xCC, 0xCC, 0x78, 0x00},
    {0xE6, 0x66, 0x6C, 0x78, 0x6C, 0x66, 0xE6, 0x00},
    {0xF0, 0x60, 0x60, 0x60, 0x62, 0x66, 0xFE, 0x00},
    {0xC6, 0xEE, 0xFE, 0xFE, 0xD6, 0xC6, 0xC6, 0x00},
    {0xC6, 0xE6, 0xF6, 0xDE, 0xCE, 0xC6, 0xC6, 0x00},
    {0x38, 0x6C, 0xC6, 0xC6, 0xC6, 0x6C, 0x38, 0x00},
    {0xFC, 0x66, 0x66, 0x7C, 0x60, 0x60, 0xF0, 0x00},
    {0x7C, 0xC6, 0xC6, 0xC6, 0xD6, 0x7C, 0x0E, 0x00},
    {0xFC, 0x66, 0x66, 0x7C, 0x6C, 0x66, 0xE6, 0x00},
    {0x7C, 0xC6, 0xE0, 0x78, 0x0E, 0xC6, 0x7C, 0x00},
    {0xFC, 0xB4, 0x30, 0x30, 0x30, 0x30, 0x78, 0x00},
    {0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xFC, 0x00},
    {0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0x78, 0x30, 0x00},
    {0xC6, 0xC6, 0xC6, 0xC6, 0xD6, 0xFE, 0x6C, 0x00},
    {0xC6, 0xC6, 0x6C, 0x38, 0x6C, 0xC6, 0xC6, 0x00},
    {0xCC, 0xCC, 0xCC, 0x78, 0x30, 0x30, 0x78, 0x00},
    {0xFE, 0xC6, 0x8C, 0x18, 0x32, 0x66, 0xFE, 0x00},
    {0x78, 0x60, 0x60, 0x60, 0x60, 0x60, 0x78, 0x00},
    {0xC0, 0x60, 0x30, 0x18, 0x0C, 0x06, 0x02, 0x00},
    {0x78, 0x18, 0x18, 0x18, 0x18, 0x18, 0x78, 0x00},
    {0x10, 0x38, 0x6C, 0xC6, 0x00, 0x00, 0x00, 0x00},
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF},
    {0x30, 0x30, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00},
    {0x00, 0x00, 0x78, 0x0C, 0x7C, 0xCC, 0x76, 0x00},
    {0xE0, 0x60, 0x60, 0x7C, 0x66, 0x66, 0xDC, 0x00},
    {0x00, 0x00, 0x78, 0xCC, 0xC0, 0xCC, 0x78, 0x00},
    {0x1C, 0x0C, 0x0C, 0x7C, 0xCC, 0xCC, 0x76, 0x00},
    {0x00, 0x00, 0x78, 0xCC, 0xFC, 0xC0, 0x78, 0x00},
    {0x38, 0x6C, 0x64, 0xF0, 0x60, 0x60, 0xF0, 0x00},
    {0x00, 0x00, 0x76, 0xCC, 0xCC, 0x7C, 0x0C, 0xF8},
    {0xE0, 0x60, 0x6C, 0x76, 0x66, 0x66, 0xE6, 0x00},
    {0x30, 0x00, 0x70, 0x30, 0x30, 0x30, 0x78, 0x00},
    {0x0C, 0x00, 0x1C, 0x0C, 0x0C, 0xCC, 0xCC, 0x78},
    {0xE0, 0x60, 0x66, 0x6C, 0x78, 0x6C, 0xE6, 0x00},
    {0x70, 0x30, 0x30, 0x30, 0x30, 0x30, 0x78, 0x00},
    {0x00, 0x00, 0xCC, 0xFE, 0xFE, 0xD6, 0xD6, 0x00},
    {0x00, 0x00, 0xB8, 0xCC, 0xCC, 0xCC, 0xCC, 0x00},
    {0x00, 0x00, 0x78, 0xCC, 0xCC, 0xCC, 0x78, 0x00},
    {0x00, 0x00, 0xDC, 0x66, 0x66, 0x7C, 0x60, 0xF0},
    {0x00, 0x00, 0x76, 0xCC, 0xCC, 0x7C, 0x0C, 0x1E},
    {0x00, 0x00, 0xDC, 0x76, 0x62, 0x60, 0xF0, 0x00},
    {0x00, 0x00, 0x7C, 0xC0, 0x70, 0x1C, 0xF8, 0x00},
    {0x10, 0x30, 0xFC, 0x30, 0x30, 0x34, 0x18, 0x00},
    {0x00, 0x00, 0xCC, 0xCC, 0xCC, 0xCC, 0x76, 0x00},
    {0x00, 0x00, 0xCC, 0xCC, 0xCC, 0x78, 0x30, 0x00},
    {0x00, 0x00, 0xC6, 0xC6, 0xD6, 0xFE, 0x6C, 0x00},
    {0x00, 0x00, 0xC6, 0x6C, 0x38, 0x6C, 0xC6, 0x00},
    {0x00, 0x00, 0xCC, 0xCC, 0xCC, 0x7C, 0x0C, 0xF8},
    {0x00, 0x00, 0xFC, 0x98, 0x30, 0x64, 0xFC, 0x00},
    {0x1C, 0x30, 0x30, 0xE0, 0x30, 0x30, 0x1C, 0x00},
    {0x18, 0x18, 0x18, 0x00, 0x18, 0x18, 0x18, 0x00},
    {0xE0, 0x30, 0x30, 0x1C, 0x30, 0x30, 0xE0, 0x00},
    {0x76, 0xDC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
    {0x00, 0x10, 0x38, 0x6C, 0xC6, 0xC6, 0xFE, 0x00}
};

void g_set(int x, int y, int color);	/* part of SVGA */

void
g_string(x0, y0, color, angle, s)
/* upper left corner of text, color and angle */
int x0, y0, color, angle;
char *s;
{
    int i, j, k;
    float sa, ca, x, y;
    k = 0;
    x = 0.5 + x0;
    y = 0.5 + y0;
    sa = sin(- DEG2RAD * angle);
    ca = cos(DEG2RAD * angle);
    while (s[k]) {
	for (i = 0; i < 8; i++)
	    for (j = 0; j < 8; j++)
		g_set(x + ca * j - sa * i, y + ca * i + sa * j, (font[(int) s[k]][i] & (1 << (7 - j))) ? color : 0);
	k++;
	x += ca * 8;
	y += sa * 8;
    }
}

/* end of gstring.c */

TERM_PUBLIC void
EMXVGA_init()
{
    if (!g_mode(EMXVGA_vmode)) {
	fputs("Unable to initiate graphics.\n", stderr);
	return;
    }
    term->xmax = g_xsize;
    term->ymax = g_ysize;
    lasty = g_ysize - 1;
}

TERM_PUBLIC void
EMXVGA_reset()
{
    g_mode(GTEXT);
    graphics_on = FALSE;
}

TERM_PUBLIC void
EMXVGA_text()
{
    if (graphics_on) {
	emx_getch();
	g_mode(GTEXT);
	graphics_on = FALSE;
    }
}

TERM_PUBLIC void
EMXVGA_graphics()
{
    if (!graphics_on) {
	g_mode(EMXVGA_vmode);
	graphics_on = TRUE;
    }
}

TERM_PUBLIC void
EMXVGA_linetype(linetype)
int linetype;
{
    EMXVGA_color = vgacolor[(linetype % 13) + 2];
}

TERM_PUBLIC void
EMXVGA_move(x, y)
unsigned int x, y;
{
    startx = x;
    starty = y;
}

TERM_PUBLIC void
EMXVGA_vector(x, y)
unsigned int x, y;
{
    g_line(startx, lasty - starty, x, lasty - y, EMXVGA_color);
    startx = x;
    starty = y;
}

TERM_PUBLIC int
EMXVGA_text_angle(ang)
int ang;
{
    EMXVGA_angle = (ang ? 90 : 0);
    return (TRUE);
}

TERM_PUBLIC void
EMXVGA_put_text(x, y, str)
unsigned int x, y;
const char *str;
{
    g_string(x, lasty - y - 3, EMXVGA_color, EMXVGA_angle, str);
}

TERM_PUBLIC void
EMXVGA_suspend()
{
    if (EMXVGA_buf)
	free(EMXVGA_buf);	/* do this just for safety */
    EMXVGA_buf = (char *) malloc(g_memsize);
    g_save(EMXVGA_buf);
    emx_getch();
    g_mode(GTEXT);
}

TERM_PUBLIC void
EMXVGA_resume()
{
    g_mode(EMXVGA_vmode);
    g_restore(EMXVGA_buf);
    free(EMXVGA_buf);
}

#ifdef EMXVESA
int emx_vesamode = G640x480x256;
int emx_xlast, emx_ylast;
TERM_PUBLIC void
EMXVESA_options()
{
    if (!END_OF_COMMAND) {
	if (almost_equals(c_token, "d$efault")) {
	    emx_vesamode = G640x480x256;
	    c_token++;
	}
    }
    if (!END_OF_COMMAND) {
	/* We have a vesa mode specified */
	struct value a;
	emx_vesamode = (int) real(const_express(&a));
    }
    sprintf(term_options, "%d", emx_vesamode);
}

TERM_PUBLIC void
EMXVESA_init()
{
    if (!g_mode(emx_vesamode))
	int_error(NO_CARET, "Couldn't select graphics mode");
    emx_xlast = g_xsize - 1;
    term->xmax = emx_xlast + 1;
    emx_ylast = g_ysize - 1;
    term->ymax = emx_ylast + 1;
    g_mode(GTEXT);
}

TERM_PUBLIC void
EMXVESA_graphics()
{
    g_mode(emx_vesamode);
}

TERM_PUBLIC void
EMXVESA_text()
{
    int ch;
    ch = getch();
    g_mode(GTEXT);
    if (ch == 3)
	int_error(NO_CARET, "Interrupt");
}

TERM_PUBLIC void
EMXVESA_reset()
{
}

#endif /* VESA */
#endif /* TERM_BODY */

#ifdef TERM_TABLE
#ifdef EMXVESA
TERM_TABLE_START(vesa_driver)
    "vesa", "IBM PC/Clone with VESA SVGA graphics board [vesa mode]",
    EMXVGA_XMAX, EMXVGA_YMAX, EMXVGA_VCHAR, EMXVGA_HCHAR,
    EMXVGA_VTIC, EMXVGA_HTIC, EMXVESA_options, EMXVESA_init, EMXVESA_reset,
    EMXVESA_text, null_scale, EMXVESA_graphics, EMXVGA_move, EMXVGA_vector,
    EMXVGA_linetype, EMXVGA_put_text, EMXVGA_text_angle,
    null_justify_text, do_point, do_arrow, set_font_null
TERM_TABLE_END(vesa_driver)

#undef LAST_TERM
#define LAST_TERM vesa_driver

#endif /* VESA */

TERM_TABLE_START(emxvga_driver)
    "emxvga", "PC with VGA running DOS or OS/2",
    EMXVGA_XMAX, EMXVGA_YMAX, EMXVGA_VCHAR, EMXVGA_HCHAR,
    EMXVGA_VTIC, EMXVGA_HTIC, options_null, EMXVGA_init, EMXVGA_reset,
    EMXVGA_text, null_scale, EMXVGA_graphics, EMXVGA_move,
    EMXVGA_vector, EMXVGA_linetype, EMXVGA_put_text, EMXVGA_text_angle,
    null_justify_text, do_point, do_arrow, set_font_null,
    0,				/* pointsize */
    TERM_CAN_MULTIPLOT, EMXVGA_suspend, EMXVGA_resume
TERM_TABLE_END(emxvga_driver)

#undef LAST_TERM
#define LAST_TERM emxvga_driver

#endif /* TERM_TABLE */
#endif /* TERM_PROTO_ONLY */
#ifdef TERM_HELP
START_HELP(emxvga)
"1 emxvga",
"?commands set terminal emxvga",
"?set terminal emxvga",
"?set term emxvga",
"?terminal emxvga",
"?term emxvga",
"?emxvga",
"?commands set terminal emxvesa",
"?set terminal emxvesa",
"?set term emxvesa",
"?terminal emxvesa",
"?term emxvesa",
"?emxvesa",
"?commands set terminal vgal",
"?set terminal vgal",
"?set term vgal",
"?terminal vgal",
"?term vgal",
"?vgal",
" The `emxvga`, `emxvesa` and `vgal` terminal drivers support PCs with SVGA,",
" vesa SVGA and VGA graphics boards, respectively.  They are intended to be",
" compiled with \"emx-gcc\" under either DOS or OS/2.  They also need VESA and",
" SVGAKIT maintained by Johannes Martin (JMARTIN@GOOFY.ZDV.UNI-MAINZ.DE) with",
" additions by David J. Liu (liu@phri.nyu.edu).",
"",
" Syntax:",
"       set terminal emxvga",
"       set terminal emxvesa {vesa-mode}",
"       set terminal vgal",
"",
" The only option is the vesa mode for `emxvesa`, which defaults to G640x480x256."
END_HELP(emxvga)
#endif /* TERM_HELP */