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Diffstat (limited to 'src/mame/video/spy.c')
-rw-r--r--src/mame/video/spy.c84
1 files changed, 84 insertions, 0 deletions
diff --git a/src/mame/video/spy.c b/src/mame/video/spy.c
new file mode 100644
index 00000000000..58a7b84164a
--- /dev/null
+++ b/src/mame/video/spy.c
@@ -0,0 +1,84 @@
+#include "driver.h"
+#include "video/konamiic.h"
+
+
+int spy_video_enable;
+
+static int layer_colorbase[3],sprite_colorbase;
+
+
+/***************************************************************************
+
+ Callbacks for the K052109
+
+***************************************************************************/
+
+static void tile_callback(int layer,int bank,int *code,int *color,int *flags,int *priority)
+{
+ *flags = (*color & 0x20) ? TILE_FLIPX : 0;
+ *code |= ((*color & 0x03) << 8) | ((*color & 0x10) << 6) | ((*color & 0x0c) << 9)
+ | (bank << 13);
+ *color = layer_colorbase[layer] + ((*color & 0xc0) >> 6);
+}
+
+
+/***************************************************************************
+
+ Callbacks for the K051960
+
+***************************************************************************/
+
+static void sprite_callback(int *code,int *color,int *priority_mask,int *shadow)
+{
+ /* bit 4 = priority over layer A (0 = have priority) */
+ /* bit 5 = priority over layer B (1 = have priority) */
+ *priority_mask = 0x00;
+ if ( *color & 0x10) *priority_mask |= 0xa;
+ if (~*color & 0x20) *priority_mask |= 0xc;
+
+ *color = sprite_colorbase + (*color & 0x0f);
+}
+
+
+/***************************************************************************
+
+ Start the video hardware emulation.
+
+***************************************************************************/
+
+VIDEO_START( spy )
+{
+ layer_colorbase[0] = 48;
+ layer_colorbase[1] = 0;
+ layer_colorbase[2] = 16;
+ sprite_colorbase = 32;
+ K052109_vh_start(machine,REGION_GFX1,NORMAL_PLANE_ORDER,tile_callback);
+ K051960_vh_start(machine,REGION_GFX2,NORMAL_PLANE_ORDER,sprite_callback);
+}
+
+
+
+/***************************************************************************
+
+ Display refresh
+
+***************************************************************************/
+
+VIDEO_UPDATE( spy )
+{
+ K052109_tilemap_update();
+
+ fillbitmap(priority_bitmap, 0, cliprect);
+
+ if (!spy_video_enable)
+ {
+ fillbitmap(bitmap,machine->pens[16 * layer_colorbase[0]],cliprect);
+ return 0;
+ }
+
+ tilemap_draw(bitmap,cliprect,K052109_tilemap[1],TILEMAP_DRAW_OPAQUE,1);
+ tilemap_draw(bitmap,cliprect,K052109_tilemap[2],0,2);
+ K051960_sprites_draw(bitmap,cliprect,-1,-1);
+ tilemap_draw(bitmap,cliprect,K052109_tilemap[0],0,0);
+ return 0;
+}