#include "driver.h" #include "video/konamiic.h" int gbusters_priority; 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) { /* (color & 0x02) is flip y handled internally by the 052109 */ *code |= ((*color & 0x0d) << 8) | ((*color & 0x10) << 5) | (bank << 12); *color = layer_colorbase[layer] + ((*color & 0xe0) >> 5); } /*************************************************************************** Callbacks for the K051960 ***************************************************************************/ static void sprite_callback(int *code,int *color,int *priority,int *shadow) { *priority = (*color & 0x30) >> 4; *color = sprite_colorbase + (*color & 0x0f); } /*************************************************************************** Start the video hardware emulation. ***************************************************************************/ VIDEO_START( gbusters ) { 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); } VIDEO_UPDATE( gbusters ) { K052109_tilemap_update(); /* sprite priority 3 = disable */ if (gbusters_priority) { // K051960_sprites_draw(bitmap,cliprect,1,1); /* are these used? */ tilemap_draw(bitmap,cliprect,K052109_tilemap[2],TILEMAP_DRAW_OPAQUE,0); K051960_sprites_draw(bitmap,cliprect,2,2); tilemap_draw(bitmap,cliprect,K052109_tilemap[1],0,0); K051960_sprites_draw(bitmap,cliprect,0,0); tilemap_draw(bitmap,cliprect,K052109_tilemap[0],0,0); } else { // K051960_sprites_draw(bitmap,cliprect,1,1); /* are these used? */ tilemap_draw(bitmap,cliprect,K052109_tilemap[1],TILEMAP_DRAW_OPAQUE,0); K051960_sprites_draw(bitmap,cliprect,2,2); tilemap_draw(bitmap,cliprect,K052109_tilemap[2],0,0); K051960_sprites_draw(bitmap,cliprect,0,0); tilemap_draw(bitmap,cliprect,K052109_tilemap[0],0,0); } return 0; }