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Diffstat (limited to 'src/mame/video/ssozumo.c')
-rw-r--r--src/mame/video/ssozumo.c181
1 files changed, 181 insertions, 0 deletions
diff --git a/src/mame/video/ssozumo.c b/src/mame/video/ssozumo.c
new file mode 100644
index 00000000000..4d88ee57840
--- /dev/null
+++ b/src/mame/video/ssozumo.c
@@ -0,0 +1,181 @@
+/***************************************************************************
+
+Syusse Oozumou
+(c) 1984 Technos Japan (Licensed by Data East)
+
+Driver by Takahiro Nogi (nogi@kt.rim.or.jp) 1999/10/04
+
+***************************************************************************/
+
+#include "driver.h"
+
+UINT8 *ssozumo_videoram2;
+UINT8 *ssozumo_colorram2;
+
+static tilemap *bg_tilemap, *fg_tilemap;
+
+/**************************************************************************/
+
+PALETTE_INIT( ssozumo )
+{
+ int bit0, bit1, bit2, bit3, r, g, b;
+ int i;
+
+ for (i = 0 ; i < 64 ; i++)
+ {
+ 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;
+ bit0 = (color_prom[0] >> 4) & 0x01;
+ bit1 = (color_prom[0] >> 5) & 0x01;
+ bit2 = (color_prom[0] >> 6) & 0x01;
+ bit3 = (color_prom[0] >> 7) & 0x01;
+ g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
+ bit0 = (color_prom[64] >> 0) & 0x01;
+ bit1 = (color_prom[64] >> 1) & 0x01;
+ bit2 = (color_prom[64] >> 2) & 0x01;
+ bit3 = (color_prom[64] >> 3) & 0x01;
+ b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
+
+ palette_set_color(machine,i,MAKE_RGB(r,g,b));
+ color_prom++;
+ }
+}
+
+WRITE8_HANDLER( ssozumo_videoram_w )
+{
+ videoram[offset] = data;
+ tilemap_mark_tile_dirty(bg_tilemap, offset);
+}
+
+WRITE8_HANDLER( ssozumo_colorram_w )
+{
+ colorram[offset] = data;
+ tilemap_mark_tile_dirty(bg_tilemap, offset);
+}
+
+WRITE8_HANDLER( ssozumo_videoram2_w )
+{
+ ssozumo_videoram2[offset] = data;
+ tilemap_mark_tile_dirty(fg_tilemap, offset);
+}
+
+WRITE8_HANDLER( ssozumo_colorram2_w )
+{
+ ssozumo_colorram2[offset] = data;
+ tilemap_mark_tile_dirty(fg_tilemap, offset);
+}
+
+WRITE8_HANDLER( ssozumo_paletteram_w )
+{
+ int bit0, bit1, bit2, bit3, val;
+ int r, g, b;
+ int offs2;
+
+ paletteram[offset] = data;
+ offs2 = offset & 0x0f;
+
+ val = paletteram[offs2];
+ bit0 = (val >> 0) & 0x01;
+ bit1 = (val >> 1) & 0x01;
+ bit2 = (val >> 2) & 0x01;
+ bit3 = (val >> 3) & 0x01;
+ r = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
+
+ val = paletteram[offs2 | 0x10];
+ bit0 = (val >> 0) & 0x01;
+ bit1 = (val >> 1) & 0x01;
+ bit2 = (val >> 2) & 0x01;
+ bit3 = (val >> 3) & 0x01;
+ g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
+
+ val = paletteram[offs2 | 0x20];
+ bit0 = (val >> 0) & 0x01;
+ bit1 = (val >> 1) & 0x01;
+ bit2 = (val >> 2) & 0x01;
+ bit3 = (val >> 3) & 0x01;
+ b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
+
+ palette_set_color(Machine, offs2 + 64, MAKE_RGB(r, g, b));
+}
+
+WRITE8_HANDLER( ssozumo_scroll_w )
+{
+ tilemap_set_scrolly(bg_tilemap, 0, data);
+}
+
+WRITE8_HANDLER( ssozumo_flipscreen_w )
+{
+ flip_screen_set(data & 0x80);
+}
+
+static TILE_GET_INFO( get_bg_tile_info )
+{
+ int code = videoram[tile_index] + ((colorram[tile_index] & 0x08) << 5);
+ int color = (colorram[tile_index] & 0x30) >> 4;
+ int flags = ((tile_index % 32) >= 16) ? TILE_FLIPY : 0;
+
+ SET_TILE_INFO(1, code, color, flags);
+}
+
+static TILE_GET_INFO( get_fg_tile_info )
+{
+ int code = ssozumo_videoram2[tile_index] + 256 * (ssozumo_colorram2[tile_index] & 0x07);
+ int color = (ssozumo_colorram2[tile_index] & 0x30) >> 4;
+
+ SET_TILE_INFO(0, code, color, 0);
+}
+
+VIDEO_START( ssozumo )
+{
+ bg_tilemap = tilemap_create(get_bg_tile_info, tilemap_scan_cols_flip_x,
+ TILEMAP_TYPE_PEN, 16, 16, 16, 32);
+
+ fg_tilemap = tilemap_create(get_fg_tile_info, tilemap_scan_cols_flip_x,
+ TILEMAP_TYPE_PEN, 8, 8, 32, 32);
+
+ tilemap_set_transparent_pen(fg_tilemap, 0);
+}
+
+static void draw_sprites(running_machine *machine, mame_bitmap *bitmap, const rectangle *cliprect)
+{
+ int offs;
+
+ for (offs = 0; offs < spriteram_size; offs += 4)
+ {
+ if (spriteram[offs] & 0x01)
+ {
+ int code = spriteram[offs + 1] + ((spriteram[offs] & 0xf0) << 4);
+ int color = (spriteram[offs] & 0x08) >> 3;
+ int flipx = spriteram[offs] & 0x04;
+ int flipy = spriteram[offs] & 0x02;
+ int sx = 239 - spriteram[offs + 3];
+ int sy = (240 - spriteram[offs + 2]) & 0xff;
+
+ if (flip_screen)
+ {
+ sx = 240 - sx;
+ sy = 240 - sy;
+ flipx = !flipx;
+ flipy = !flipy;
+ }
+
+ drawgfx(bitmap, machine->gfx[2],
+ code, color,
+ flipx, flipy,
+ sx, sy,
+ cliprect,
+ TRANSPARENCY_PEN, 0);
+ }
+ }
+}
+
+VIDEO_UPDATE( ssozumo )
+{
+ tilemap_draw(bitmap, cliprect, bg_tilemap, 0, 0);
+ tilemap_draw(bitmap, cliprect, fg_tilemap, 0, 0);
+ draw_sprites(machine, bitmap, cliprect);
+ return 0;
+}