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-rw-r--r--src/mame/video/ampoker.c120
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diff --git a/src/mame/video/ampoker.c b/src/mame/video/ampoker.c
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+/********************************************************************************
+
+
+ AMERICAN POKER 2 - VIDEO HARDWARE
+ ---------------------------------
+
+ Company: Novomatic.
+ Year: 1990.
+
+ Original preliminary driver: Curt Coder.
+ Rewrite and additional work: Roberto Fresca, with a lot of help of Grull Osgo.
+
+
+ --- Supported Sets ---
+
+ Old name | New name | Relation | Description
+ --------------------------------------------
+ ampokr2b ampoker2 parent American Poker II.
+ ---- ampkr2b1 clone American Poker II (bootleg, set 1).
+ ampokr2a ampkr2b2 clone American Poker II (bootleg, set 2).
+ ampoker2 ampkr2b3 clone American Poker II (bootleg, set 3).
+ ampokr2c pkrdewin clone Poker De Win.
+ ---- ampkr95 clone American Poker 95.
+ ---- sigmapkr parent Sigma Poker.
+ ---- sigma2k parent Sigma Poker 2000.
+
+
+********************************************************************************/
+
+
+#include "driver.h"
+
+static tilemap *bg_tilemap;
+
+
+PALETTE_INIT( ampoker2 )
+{
+ #define COLOR(gfxn,offs) (colortable[machine->drv->gfxdecodeinfo[gfxn].color_codes_start + offs])
+
+ int i;
+
+/* - bits -
+ 76543210
+ RRRGGGBB
+*/
+ for (i = 0; i < machine->drv->total_colors; i++)
+ {
+ int bit0, bit1, bit2, r, g, b;
+
+ /* blue component */
+ bit0 = 0;
+ bit1 = (*color_prom >> 0) & 0x01;
+ bit2 = (*color_prom >> 1) & 0x01;
+ b = ( 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2);
+
+ /* green component */
+ bit0 = (*color_prom >> 2) & 0x01;
+ bit1 = (*color_prom >> 3) & 0x01;
+ bit2 = (*color_prom >> 4) & 0x01;
+ g = ( 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2);
+
+ /* red component */
+ bit0 = (*color_prom >> 5) & 0x01;
+ bit1 = (*color_prom >> 6) & 0x01;
+ bit2 = (*color_prom >> 7) & 0x01;
+ r = ( 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2);
+
+ palette_set_color(machine, i, MAKE_RGB(r, g, b));
+
+ color_prom++;
+ }
+}
+
+WRITE8_HANDLER( ampoker2_videoram_w )
+{
+ videoram[offset] = data;
+ tilemap_mark_tile_dirty(bg_tilemap, offset / 2);
+}
+
+static TILE_GET_INFO( get_bg_tile_info )
+{
+ int offs = tile_index * 2;
+ int attr = videoram[offs + 1];
+ int code = videoram[offs];
+ int color = attr;
+ code=code+(256*(color & 0x03)); /* code = color.bit1 + color.bit0 + code */
+ color= color >> 1; /* color = color - bit0 (bit1..bit7) */
+
+ SET_TILE_INFO(0, code, color, 0);
+}
+
+static TILE_GET_INFO( s2k_get_bg_tile_info )
+{
+ int offs = tile_index * 2;
+ int attr = videoram[offs + 1];
+ int code = videoram[offs];
+ int color = attr;
+ code=code+(256*(color & 0x0f)); /* the game use 2 extra bits */
+ color= color >> 1;
+
+ SET_TILE_INFO(0, code, color, 0);
+}
+
+VIDEO_START(ampoker2)
+{
+ bg_tilemap = tilemap_create(get_bg_tile_info, tilemap_scan_rows,
+ TILEMAP_TYPE_PEN, 8, 8, 64, 32);
+}
+
+VIDEO_START(sigma2k)
+{
+ bg_tilemap = tilemap_create(s2k_get_bg_tile_info, tilemap_scan_rows,
+ TILEMAP_TYPE_PEN, 8, 8, 64, 32);
+}
+
+VIDEO_UPDATE(ampoker2)
+{
+ tilemap_draw(bitmap, cliprect, bg_tilemap, 0, 0);
+ return 0;
+}