86Box/src/machine/m_xt_t1000_vid.c

/*
 * 86Box    A hypervisor and IBM PC system emulator that specializes in
 *          running old operating systems and software designed for IBM
 *          PC systems and compatibles from 1981 through fairly recent
 *          system designs based on the PCI bus.
 *
 *          This file is part of the 86Box distribution.
 *
 *          Implementation of the Toshiba T1000 plasma display, which
 *          has a fixed resolution of 640x200 pixels.
 *
 *
 *
 * Authors: Fred N. van Kempen, <decwiz@yahoo.com>
 *          Miran Grca, <mgrca8@gmail.com>
 *          Sarah Walker, <https://pcem-emulator.co.uk/>
 *
 *          Copyright 2018-2019 Fred N. van Kempen.
 *          Copyright 2018-2019 Miran Grca.
 *          Copyright 2018-2019 Sarah Walker.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free  Software  Foundation; either  version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is  distributed in the hope that it will be useful, but
 * WITHOUT   ANY  WARRANTY;  without  even   the  implied  warranty  of
 * MERCHANTABILITY  or FITNESS  FOR A PARTICULAR  PURPOSE. See  the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the:
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place - Suite 330
 *   Boston, MA 02111-1307
 *   USA.
 */
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include <86box/86box.h>
#include <86box/device.h>
#include <86box/io.h>
#include <86box/mem.h>
#include <86box/timer.h>
#include "cpu.h"
#include <86box/video.h>
#include <86box/vid_cga.h>
#include <86box/m_xt_t1000.h>
#include <86box/plat_unused.h>

#define T1000_XSIZE 640
#define T1000_YSIZE 200

/* Mapping of attributes to colours */
static uint32_t blue;
static uint32_t grey;
static uint8_t  boldcols[256]; /* Which attributes use the bold font */
static uint32_t blinkcols[256][2];
static uint32_t normcols[256][2];
static uint8_t  language;

static video_timings_t timing_t1000 = { VIDEO_ISA, 8, 16, 32, 8, 16, 32 };

/* Video options set by the motherboard; they will be picked up by the card
 * on the next poll.
 *
 * Bit  1:   Danish
 * Bit  0:   Thin font
 */
static uint8_t st_video_options;
static uint8_t st_enabled          = 1;
static int8_t  st_display_internal = -1;

void
t1000_video_options_set(uint8_t options)
{
    st_video_options = options & 1;
    st_video_options |= language;
}

void
t1000_video_enable(uint8_t enabled)
{
    st_enabled = enabled;
}

void
t1000_display_set(uint8_t internal)
{
    st_display_internal = (int8_t) internal;
}

uint8_t
t1000_display_get(void)
{
    return (uint8_t) st_display_internal;
}

typedef struct t1000_t {
    mem_mapping_t mapping;

    cga_t cga; /* The CGA is used for the external
                * display; most of its registers are
                * ignored by the plasma display. */

    int     font;     /* Current font, 0-3 */
    int     enabled;  /* Hardware enabled, 0 or 1 */
    int     internal; /* Using internal display? */
    uint8_t attrmap;  /* Attribute mapping register */

    uint64_t dispontime, dispofftime;

    int     linepos, displine;
    int     vc;
    int     dispon;
    int     vsynctime;
    uint8_t video_options;
    uint8_t backlight, invert;

    uint8_t *vram;
} t1000_t;

static void    t1000_recalctimings(t1000_t *t1000);
static void    t1000_write(uint32_t addr, uint8_t val, void *priv);
static uint8_t t1000_read(uint32_t addr, void *priv);
static void    t1000_recalcattrs(t1000_t *t1000);

static void
t1000_out(uint16_t addr, uint8_t val, void *priv)
{
    t1000_t *t1000 = (t1000_t *) priv;
    switch (addr) {
        /* Emulated CRTC, register select */
        case 0x3d0:
        case 0x3d2:
        case 0x3d4:
        case 0x3d6:
            cga_out(addr, val, &t1000->cga);
            break;

        /* Emulated CRTC, value */
        case 0x3d1:
        case 0x3d3:
        case 0x3d5:
        case 0x3d7:
            /* Register 0x12 controls the attribute mappings for the
             * LCD screen. */
            if (t1000->cga.crtcreg == 0x12) {
                t1000->attrmap = val;
                t1000_recalcattrs(t1000);
                return;
            }
            cga_out(addr, val, &t1000->cga);

            t1000_recalctimings(t1000);
            return;

        case 0x3D8: /* CGA control register */
        case 0x3D9: /* CGA colour register */
            cga_out(addr, val, &t1000->cga);
            return;

        default:
            break;
    }
}

static uint8_t
t1000_in(uint16_t addr, void *priv)
{
    t1000_t *t1000 = (t1000_t *) priv;
    uint8_t  val;

    switch (addr) {
        case 0x3d1:
        case 0x3d3:
        case 0x3d5:
        case 0x3d7:
            if (t1000->cga.crtcreg == 0x12) {
                val = t1000->attrmap & 0x0F;
                if (t1000->internal)
                    val |= 0x20; /* LCD / CRT */
                return val;
            }
            break;

        default:
            break;
    }

    return cga_in(addr, &t1000->cga);
}

static void
t1000_write(uint32_t addr, uint8_t val, void *priv)
{
    t1000_t *t1000 = (t1000_t *) priv;

    t1000->vram[addr & 0x3fff] = val;
    cycles -= 4;
}

static uint8_t
t1000_read(uint32_t addr, void *priv)
{
    t1000_t *t1000 = (t1000_t *) priv;

    cycles -= 4;

    return t1000->vram[addr & 0x3fff];
}

static void
t1000_recalctimings(t1000_t *t1000)
{
    double disptime;
    double _dispontime;
    double _dispofftime;

    if (!t1000->internal) {
        cga_recalctimings(&t1000->cga);
        return;
    }
    disptime           = 651;
    _dispontime        = 640;
    _dispofftime       = disptime - _dispontime;
    t1000->dispontime  = (uint64_t) (_dispontime * xt_cpu_multi);
    t1000->dispofftime = (uint64_t) (_dispofftime * xt_cpu_multi);
}

/* Draw a row of text in 80-column mode */
static void
t1000_text_row80(t1000_t *t1000)
{
    uint32_t cols[2];
    uint8_t  chr;
    uint8_t  attr;
    int      drawcursor;
    int      cursorline;
    int      bold;
    int      blink;
    uint16_t addr;
    uint8_t  sc;
    uint16_t ma = (t1000->cga.crtc[13] | (t1000->cga.crtc[12] << 8)) & 0x3fff;
    uint16_t ca = (t1000->cga.crtc[15] | (t1000->cga.crtc[14] << 8)) & 0x3fff;

    sc   = (t1000->displine) & 7;
    addr = ((ma & ~1) + (t1000->displine >> 3) * 80) * 2;
    ma += (t1000->displine >> 3) * 80;

    if ((t1000->cga.crtc[10] & 0x60) == 0x20) {
        cursorline = 0;
    } else {
        cursorline = ((t1000->cga.crtc[10] & 0x0F) <= sc) && ((t1000->cga.crtc[11] & 0x0F) >= sc);
    }
    for (uint8_t x = 0; x < 80; x++) {
        chr        = t1000->vram[(addr + 2 * x) & 0x3FFF];
        attr       = t1000->vram[(addr + 2 * x + 1) & 0x3FFF];
        drawcursor = ((ma == ca) && cursorline && (t1000->cga.cgamode & 8) && (t1000->cga.cgablink & 16));

        blink = ((t1000->cga.cgablink & 16) && (t1000->cga.cgamode & 0x20) && (attr & 0x80) && !drawcursor);

        if (t1000->video_options & 1)
            bold = boldcols[attr] ? chr : chr + 256;
        else
            bold = boldcols[attr] ? chr + 256 : chr;
        if (t1000->video_options & 2)
            bold += 512;

        if (t1000->cga.cgamode & 0x20) /* Blink */
        {
            cols[1] = blinkcols[attr][1];
            cols[0] = blinkcols[attr][0];
            if (blink)
                cols[1] = cols[0];
        } else {
            cols[1] = normcols[attr][1];
            cols[0] = normcols[attr][0];
        }
        if (drawcursor) {
            for (uint8_t c = 0; c < 8; c++) {
                (buffer32->line[t1000->displine])[(x << 3) + c] = cols[(fontdat[bold][sc] & (1 << (c ^ 7))) ? 1 : 0] ^ (blue ^ grey);
            }
        } else {
            for (uint8_t c = 0; c < 8; c++)
                (buffer32->line[t1000->displine])[(x << 3) + c] = cols[(fontdat[bold][sc] & (1 << (c ^ 7))) ? 1 : 0];
        }
        ++ma;
    }
}

/* Draw a row of text in 40-column mode */
static void
t1000_text_row40(t1000_t *t1000)
{
    uint32_t cols[2];
    uint8_t  chr;
    uint8_t  attr;
    int      drawcursor;
    int      cursorline;
    int      bold;
    int      blink;
    uint16_t addr;
    uint8_t  sc;
    uint16_t ma = (t1000->cga.crtc[13] | (t1000->cga.crtc[12] << 8)) & 0x3fff;
    uint16_t ca = (t1000->cga.crtc[15] | (t1000->cga.crtc[14] << 8)) & 0x3fff;

    sc   = (t1000->displine) & 7;
    addr = ((ma & ~1) + (t1000->displine >> 3) * 40) * 2;
    ma += (t1000->displine >> 3) * 40;

    if ((t1000->cga.crtc[10] & 0x60) == 0x20) {
        cursorline = 0;
    } else {
        cursorline = ((t1000->cga.crtc[10] & 0x0F) <= sc) && ((t1000->cga.crtc[11] & 0x0F) >= sc);
    }
    for (uint8_t x = 0; x < 40; x++) {
        chr        = t1000->vram[(addr + 2 * x) & 0x3FFF];
        attr       = t1000->vram[(addr + 2 * x + 1) & 0x3FFF];
        drawcursor = ((ma == ca) && cursorline && (t1000->cga.cgamode & 8) && (t1000->cga.cgablink & 16));

        blink = ((t1000->cga.cgablink & 16) && (t1000->cga.cgamode & 0x20) && (attr & 0x80) && !drawcursor);

        if (t1000->video_options & 1)
            bold = boldcols[attr] ? chr : chr + 256;
        else
            bold = boldcols[attr] ? chr + 256 : chr;
        if (t1000->video_options & 2)
            bold += 512;

        if (t1000->cga.cgamode & 0x20) /* Blink */
        {
            cols[1] = blinkcols[attr][1];
            cols[0] = blinkcols[attr][0];
            if (blink)
                cols[1] = cols[0];
        } else {
            cols[1] = normcols[attr][1];
            cols[0] = normcols[attr][0];
        }
        if (drawcursor) {
            for (uint8_t c = 0; c < 8; c++) {
                (buffer32->line[t1000->displine])[(x << 4) + c * 2] = (buffer32->line[t1000->displine])[(x << 4) + c * 2 + 1] = cols[(fontdat[bold][sc] & (1 << (c ^ 7))) ? 1 : 0] ^ (blue ^ grey);
            }
        } else {
            for (uint8_t c = 0; c < 8; c++) {
                (buffer32->line[t1000->displine])[(x << 4) + c * 2] = (buffer32->line[t1000->displine])[(x << 4) + c * 2 + 1] = cols[(fontdat[bold][sc] & (1 << (c ^ 7))) ? 1 : 0];
            }
        }
        ++ma;
    }
}

/* Draw a line in CGA 640x200 mode */
static void
t1000_cgaline6(t1000_t *t1000)
{
    uint8_t  dat;
    uint32_t ink = 0;
    uint16_t addr;
    uint32_t fg = (t1000->cga.cgacol & 0x0F) ? blue : grey;
    uint32_t bg = grey;

    uint16_t ma = (t1000->cga.crtc[13] | (t1000->cga.crtc[12] << 8)) & 0x3fff;

    addr = ((t1000->displine) & 1) * 0x2000 + (t1000->displine >> 1) * 80 + ((ma & ~1) << 1);

    for (uint8_t x = 0; x < 80; x++) {
        dat = t1000->vram[addr & 0x3FFF];
        addr++;

        for (uint8_t c = 0; c < 8; c++) {
            ink = (dat & 0x80) ? fg : bg;
            if (!(t1000->cga.cgamode & 8))
                ink = grey;
            (buffer32->line[t1000->displine])[x * 8 + c] = ink;
            dat                                                       = dat << 1;
        }
    }
}

/* Draw a line in CGA 320x200 mode. Here the CGA colours are converted to
 * dither patterns: colour 1 to 25% grey, colour 2 to 50% grey */
static void
t1000_cgaline4(t1000_t *t1000)
{
    uint8_t  dat;
    uint8_t  pattern;
    uint32_t ink0;
    uint32_t ink1;
    uint16_t addr;

    uint16_t ma = (t1000->cga.crtc[13] | (t1000->cga.crtc[12] << 8)) & 0x3fff;
    addr        = ((t1000->displine) & 1) * 0x2000 + (t1000->displine >> 1) * 80 + ((ma & ~1) << 1);

    for (uint8_t x = 0; x < 80; x++) {
        dat = t1000->vram[addr & 0x3FFF];
        addr++;

        for (uint8_t c = 0; c < 4; c++) {
            pattern = (dat & 0xC0) >> 6;
            if (!(t1000->cga.cgamode & 8))
                pattern = 0;

            switch (pattern & 3) {
                default:
                case 0:
                    ink0 = ink1 = grey;
                    break;
                case 1:
                    if (t1000->displine & 1) {
                        ink0 = grey;
                        ink1 = grey;
                    } else {
                        ink0 = blue;
                        ink1 = grey;
                    }
                    break;
                case 2:
                    if (t1000->displine & 1) {
                        ink0 = grey;
                        ink1 = blue;
                    } else {
                        ink0 = blue;
                        ink1 = grey;
                    }
                    break;
                case 3:
                    ink0 = ink1 = blue;
                    break;
            }
            (buffer32->line[t1000->displine])[x * 8 + 2 * c]     = ink0;
            (buffer32->line[t1000->displine])[x * 8 + 2 * c + 1] = ink1;
            dat                                                  = dat << 2;
        }
    }
}

static void
t1000_poll(void *priv)
{
    t1000_t *t1000 = (t1000_t *) priv;

    if (t1000->video_options != st_video_options || t1000->enabled != st_enabled) {
        t1000->video_options = st_video_options;
        t1000->enabled       = st_enabled;

        /* Set the font used for the external display */
        t1000->cga.fontbase = ((t1000->video_options & 3) * 256);

        if (t1000->enabled) /* Disable internal chipset */
            mem_mapping_enable(&t1000->mapping);
        else
            mem_mapping_disable(&t1000->mapping);
    }
    /* Switch between internal plasma and external CRT display. */
    if (st_display_internal != -1 && st_display_internal != t1000->internal) {
        t1000->internal = st_display_internal;
        t1000_recalctimings(t1000);
    }
    if (!t1000->internal) {
        cga_poll(&t1000->cga);
        return;
    }

    if (!t1000->linepos) {
        timer_advance_u64(&t1000->cga.timer, t1000->dispofftime);
        t1000->cga.cgastat |= 1;
        t1000->linepos = 1;
        if (t1000->dispon) {
            if (t1000->displine == 0) {
                video_wait_for_buffer();
            }

            /* Graphics */
            if (t1000->cga.cgamode & 0x02) {
                if (t1000->cga.cgamode & 0x10)
                    t1000_cgaline6(t1000);
                else
                    t1000_cgaline4(t1000);
            } else if (t1000->cga.cgamode & 0x01) /* High-res text */
            {
                t1000_text_row80(t1000);
            } else {
                t1000_text_row40(t1000);
            }
        }
        t1000->displine++;
        /* Hardcode a fixed refresh rate and VSYNC timing */
        if (t1000->displine == 200) /* Start of VSYNC */
        {
            t1000->cga.cgastat |= 8;
            t1000->dispon = 0;
        }
        if (t1000->displine == 216) /* End of VSYNC */
        {
            t1000->displine = 0;
            t1000->cga.cgastat &= ~8;
            t1000->dispon = 1;
        }
    } else {
        if (t1000->dispon) {
            t1000->cga.cgastat &= ~1;
        }
        timer_advance_u64(&t1000->cga.timer, t1000->dispontime);
        t1000->linepos = 0;

        if (t1000->displine == 200) {
            /* Hardcode 640x200 window size */
            if ((T1000_XSIZE != xsize) || (T1000_YSIZE != ysize) || video_force_resize_get()) {
                xsize = T1000_XSIZE;
                ysize = T1000_YSIZE;
                if (xsize < 64)
                    xsize = 656;
                if (ysize < 32)
                    ysize = 200;
                set_screen_size(xsize, ysize);

                if (video_force_resize_get())
                    video_force_resize_set(0);
            }
            video_blit_memtoscreen(0, 0, xsize, ysize);

            frames++;
            /* Fixed 640x200 resolution */
            video_res_x = T1000_XSIZE;
            video_res_y = T1000_YSIZE;

            if (t1000->cga.cgamode & 0x02) {
                if (t1000->cga.cgamode & 0x10)
                    video_bpp = 1;
                else
                    video_bpp = 2;

            } else
                video_bpp = 0;
            t1000->cga.cgablink++;
        }
    }
}

static void
t1000_recalcattrs(t1000_t *t1000)
{
    int n;

    /* val behaves as follows:
     *     Bit 0: Attributes 01-06, 08-0E are inverse video
     *     Bit 1: Attributes 01-06, 08-0E are bold
     *     Bit 2: Attributes 11-16, 18-1F, 21-26, 28-2F ... F1-F6, F8-FF
     *           are inverse video
     *     Bit 3: Attributes 11-16, 18-1F, 21-26, 28-2F ... F1-F6, F8-FF
     *           are bold */

    /* Set up colours */
    if (t1000->invert) {
        if (t1000->backlight) {
            grey = makecol(0x2D, 0x39, 0x5A);
            blue = makecol(0x85, 0xa0, 0xD6);
        } else {
            grey = makecol(0x0f, 0x21, 0x3f);
            blue = makecol(0x1C, 0x71, 0x31);
        }
    } else {
        if (t1000->backlight) {
            blue = makecol(0x2D, 0x39, 0x5A);
            grey = makecol(0x85, 0xa0, 0xD6);
        } else {
            blue = makecol(0x0f, 0x21, 0x3f);
            grey = makecol(0x1C, 0x71, 0x31);
        }
    }

    /* Initialise the attribute mapping. Start by defaulting everything
     * to grey on blue, and with bold set by bit 3 */
    for (n = 0; n < 256; n++) {
        boldcols[n]     = (n & 8) != 0;
        blinkcols[n][0] = normcols[n][0] = blue;
        blinkcols[n][1] = normcols[n][1] = grey;
    }

    /* Colours 0x11-0xFF are controlled by bits 2 and 3 of the
     * passed value. Exclude x0 and x8, which are always grey on
     * blue. */
    for (n = 0x11; n <= 0xFF; n++) {
        if ((n & 7) == 0)
            continue;
        if (t1000->attrmap & 4) /* Inverse */
        {
            blinkcols[n][0] = normcols[n][0] = blue;
            blinkcols[n][1] = normcols[n][1] = grey;
        } else /* Normal */
        {
            blinkcols[n][0] = normcols[n][0] = grey;
            blinkcols[n][1] = normcols[n][1] = blue;
        }
        if (t1000->attrmap & 8)
            boldcols[n] = 1; /* Bold */
    }
    /* Set up the 01-0E range, controlled by bits 0 and 1 of the
     * passed value. When blinking is enabled this also affects 81-8E. */
    for (n = 0x01; n <= 0x0E; n++) {
        if (n == 7)
            continue;
        if (t1000->attrmap & 1) {
            blinkcols[n][0] = normcols[n][0] = blue;
            blinkcols[n][1] = normcols[n][1] = grey;
            blinkcols[n + 128][0]            = blue;
            blinkcols[n + 128][1]            = grey;
        } else {
            blinkcols[n][0] = normcols[n][0] = grey;
            blinkcols[n][1] = normcols[n][1] = blue;
            blinkcols[n + 128][0]            = grey;
            blinkcols[n + 128][1]            = blue;
        }
        if (t1000->attrmap & 2)
            boldcols[n] = 1;
    }
    /* Colours 07 and 0F are always blue on grey. If blinking is
     * enabled so are 87 and 8F. */
    for (n = 0x07; n <= 0x0F; n += 8) {
        blinkcols[n][0] = normcols[n][0] = grey;
        blinkcols[n][1] = normcols[n][1] = blue;
        blinkcols[n + 128][0]            = grey;
        blinkcols[n + 128][1]            = blue;
    }
    /* When not blinking, colours 81-8F are always blue on grey. */
    for (n = 0x81; n <= 0x8F; n++) {
        normcols[n][0] = grey;
        normcols[n][1] = blue;
        boldcols[n]    = (n & 0x08) != 0;
    }

    /* Finally do the ones which are solid grey. These differ between
     * the normal and blinking mappings */
    for (n = 0; n <= 0xFF; n += 0x11) {
        normcols[n][0] = normcols[n][1] = grey;
    }
    /* In the blinking range, 00 11 22 .. 77 and 80 91 A2 .. F7 are grey */
    for (n = 0; n <= 0x77; n += 0x11) {
        blinkcols[n][0] = blinkcols[n][1] = grey;
        blinkcols[n + 128][0] = blinkcols[n + 128][1] = grey;
    }
}

static void *
t1000_init(UNUSED(const device_t *info))
{
    t1000_t *t1000 = malloc(sizeof(t1000_t));
    memset(t1000, 0, sizeof(t1000_t));
    loadfont("roms/machines/t1000/t1000font.bin", 8);
    cga_init(&t1000->cga);
    video_inform(VIDEO_FLAG_TYPE_CGA, &timing_t1000);

    t1000->internal = 1;

    t1000->backlight = device_get_config_int("backlight");
    t1000->invert    = device_get_config_int("invert");

    /* 16k video RAM */
    t1000->vram = malloc(0x4000);

    timer_set_callback(&t1000->cga.timer, t1000_poll);
    timer_set_p(&t1000->cga.timer, t1000);

    /* Occupy memory between 0xB8000 and 0xBFFFF */
    mem_mapping_add(&t1000->mapping, 0xb8000, 0x8000, t1000_read, NULL, NULL, t1000_write, NULL, NULL, NULL, 0, t1000);
    /* Respond to CGA I/O ports */
    io_sethandler(0x03d0, 0x000c, t1000_in, NULL, NULL, t1000_out, NULL, NULL, t1000);

    /* Default attribute mapping is 4 */
    t1000->attrmap = 4;
    t1000_recalcattrs(t1000);

    /* Start off in 80x25 text mode */
    t1000->cga.cgastat   = 0xF4;
    t1000->cga.vram      = t1000->vram;
    t1000->enabled       = 1;
    t1000->video_options = 0x01;
    language             = device_get_config_int("display_language") ? 2 : 0;
    return t1000;
}

static void
t1000_close(void *priv)
{
    t1000_t *t1000 = (t1000_t *) priv;

    free(t1000->vram);
    free(t1000);
}

static void
t1000_speed_changed(void *priv)
{
    t1000_t *t1000 = (t1000_t *) priv;

    t1000_recalctimings(t1000);
}

static const device_config_t t1000_config[] = {
  // clang-format off
    {
        .name = "display_language",
        .description = "Language",
        .type = CONFIG_SELECTION,
        .selection = {
            { .description = "USA", .value = 0 },
            { .description = "Danish", .value = 1 }
        },
        .default_int = 0
    },
    {
        .name = "backlight",
        .description = "Enable backlight",
        .type = CONFIG_BINARY,
        .default_string = "",
        .default_int = 1
    },
    {
        .name = "invert",
        .description = "Invert colors",
        .type = CONFIG_BINARY,
        .default_string = "",
        .default_int = 0
    },
    { .name = "", .description = "", .type = CONFIG_END }
  // clang-format on
};

const device_t t1000_video_device = {
    .name          = "Toshiba T1000 Video",
    .internal_name = "t1000_video",
    .flags         = 0,
    .local         = 0,
    .init          = t1000_init,
    .close         = t1000_close,
    .reset         = NULL,
    { .available = NULL },
    .speed_changed = t1000_speed_changed,
    .force_redraw  = NULL,
    .config        = t1000_config
};

const device_t t1200_video_device = {
    .name          = "Toshiba T1200 Video",
    .internal_name = "t1200_video",
    .flags         = 0,
    .local         = 0,
    .init          = t1000_init,
    .close         = t1000_close,
    .reset         = NULL,
    { .available = NULL },
    .speed_changed = t1000_speed_changed,
    .force_redraw  = NULL,
    .config        = t1000_config
};