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Diffstat (limited to 'src/mame/video/lvcards.c')
-rw-r--r--src/mame/video/lvcards.c115
1 files changed, 115 insertions, 0 deletions
diff --git a/src/mame/video/lvcards.c b/src/mame/video/lvcards.c
new file mode 100644
index 00000000000..dd4505f2c51
--- /dev/null
+++ b/src/mame/video/lvcards.c
@@ -0,0 +1,115 @@
+/***************************************************************************
+
+ video.c
+
+ Functions to emulate the video hardware of the machine.
+
+***************************************************************************/
+
+#include "driver.h"
+
+static tilemap *bg_tilemap;
+
+PALETTE_INIT( ponttehk )
+{
+ int i;
+
+ for ( i = 0; i < machine->drv->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->drv->total_colors] >> 0) & 0x01;
+ bit1 = (color_prom[machine->drv->total_colors] >> 1) & 0x01;
+ bit2 = (color_prom[machine->drv->total_colors] >> 2) & 0x01;
+ bit3 = (color_prom[machine->drv->total_colors] >> 3) & 0x01;
+ g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
+
+ /* blue component */
+ bit0 = (color_prom[2*machine->drv->total_colors] >> 0) & 0x01;
+ bit1 = (color_prom[2*machine->drv->total_colors] >> 1) & 0x01;
+ bit2 = (color_prom[2*machine->drv->total_colors] >> 2) & 0x01;
+ bit3 = (color_prom[2*machine->drv->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++;
+ }
+}
+
+PALETTE_INIT( lvcards ) //Ever so slightly different, but different enough.
+{
+ int i;
+
+ for ( i = 0; i < machine->drv->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->drv->total_colors] >> 0) & 0x11;
+ bit1 = (color_prom[machine->drv->total_colors] >> 1) & 0x11;
+ bit2 = (color_prom[machine->drv->total_colors] >> 2) & 0x11;
+ bit3 = (color_prom[machine->drv->total_colors] >> 3) & 0x11;
+ g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
+
+ /* blue component */
+ bit0 = (color_prom[2*machine->drv->total_colors] >> 0) & 0x11;
+ bit1 = (color_prom[2*machine->drv->total_colors] >> 1) & 0x11;
+ bit2 = (color_prom[2*machine->drv->total_colors] >> 2) & 0x11;
+ bit3 = (color_prom[2*machine->drv->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_HANDLER( lvcards_videoram_w )
+{
+ videoram[offset] = data;
+ tilemap_mark_tile_dirty(bg_tilemap, offset);
+}
+
+WRITE8_HANDLER( lvcards_colorram_w )
+{
+ colorram[offset] = data;
+ tilemap_mark_tile_dirty(bg_tilemap, offset);
+}
+
+static TILE_GET_INFO( get_bg_tile_info )
+{
+ int attr = colorram[tile_index];
+ int code = videoram[tile_index] + ((attr & 0x30) << 4) + ((attr & 0x80) << 3);
+ int color = attr & 0x0f;
+ int flags = (attr & 0x40) ? TILE_FLIPX : 0;
+
+ SET_TILE_INFO(0, code, color, flags);
+}
+
+VIDEO_START( lvcards )
+{
+ bg_tilemap = tilemap_create(get_bg_tile_info, tilemap_scan_rows,
+ TILEMAP_TYPE_PEN, 8, 8, 32, 32);
+}
+
+VIDEO_UPDATE( lvcards )
+{
+ tilemap_draw(bitmap, cliprect, bg_tilemap, 0, 0);
+ return 0;
+}