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/***************************************************************************
video.c
Functions to emulate the video hardware of the machine.
***************************************************************************/
#include "emu.h"
#include "includes/lvcards.h"
PALETTE_INIT_MEMBER(lvcards_state,ponttehk)
{
const UINT8 *color_prom = memregion("proms")->base();
int i;
for ( i = 0; i < machine().total_colors(); i++ )
{
int bit0,bit1,bit2,bit3,r,g,b;
/* red component */
bit0 = (color_prom[0] >> 0) & 0x01;
bit1 = (color_prom[0] >> 1) & 0x01;
bit2 = (color_prom[0] >> 2) & 0x01;
bit3 = (color_prom[0] >> 3) & 0x01;
r = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
/* green component */
bit0 = (color_prom[machine().total_colors()] >> 0) & 0x01;
bit1 = (color_prom[machine().total_colors()] >> 1) & 0x01;
bit2 = (color_prom[machine().total_colors()] >> 2) & 0x01;
bit3 = (color_prom[machine().total_colors()] >> 3) & 0x01;
g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
/* blue component */
bit0 = (color_prom[2*machine().total_colors()] >> 0) & 0x01;
bit1 = (color_prom[2*machine().total_colors()] >> 1) & 0x01;
bit2 = (color_prom[2*machine().total_colors()] >> 2) & 0x01;
bit3 = (color_prom[2*machine().total_colors()] >> 3) & 0x01;
b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
palette_set_color(machine(),i,MAKE_RGB(r,g,b));
color_prom++;
}
}
void lvcards_state::palette_init()//Ever so slightly different, but different enough.
{
const UINT8 *color_prom = memregion("proms")->base();
int i;
for ( i = 0; i < machine().total_colors(); i++ )
{
int bit0,bit1,bit2,bit3,r,g,b;
/* red component */
bit0 = (color_prom[0] >> 0) & 0x11;
bit1 = (color_prom[0] >> 1) & 0x11;
bit2 = (color_prom[0] >> 2) & 0x11;
bit3 = (color_prom[0] >> 3) & 0x11;
r = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
/* green component */
bit0 = (color_prom[machine().total_colors()] >> 0) & 0x11;
bit1 = (color_prom[machine().total_colors()] >> 1) & 0x11;
bit2 = (color_prom[machine().total_colors()] >> 2) & 0x11;
bit3 = (color_prom[machine().total_colors()] >> 3) & 0x11;
g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
/* blue component */
bit0 = (color_prom[2*machine().total_colors()] >> 0) & 0x11;
bit1 = (color_prom[2*machine().total_colors()] >> 1) & 0x11;
bit2 = (color_prom[2*machine().total_colors()] >> 2) & 0x11;
bit3 = (color_prom[2*machine().total_colors()] >> 3) & 0x11;
b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
palette_set_color(machine(),i,MAKE_RGB(r,g,b));
color_prom++;
}
}
WRITE8_MEMBER(lvcards_state::lvcards_videoram_w)
{
m_videoram[offset] = data;
m_bg_tilemap->mark_tile_dirty(offset);
}
WRITE8_MEMBER(lvcards_state::lvcards_colorram_w)
{
m_colorram[offset] = data;
m_bg_tilemap->mark_tile_dirty(offset);
}
TILE_GET_INFO_MEMBER(lvcards_state::get_bg_tile_info)
{
int attr = m_colorram[tile_index];
int code = m_videoram[tile_index] + ((attr & 0x30) << 4) + ((attr & 0x80) << 3);
int color = attr & 0x0f;
int flags = (attr & 0x40) ? TILE_FLIPX : 0;
SET_TILE_INFO_MEMBER(m_gfxdecode, 0, code, color, flags);
}
void lvcards_state::video_start()
{
m_bg_tilemap = &machine().tilemap().create(tilemap_get_info_delegate(FUNC(lvcards_state::get_bg_tile_info),this), TILEMAP_SCAN_ROWS,
8, 8, 32, 32);
}
UINT32 lvcards_state::screen_update_lvcards(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
return 0;
}
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