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#include "driver.h"
#include "video/konamiic.h"
int bottom9_video_enable;
static int layer_colorbase[3],sprite_colorbase,zoom_colorbase;
/***************************************************************************
Callbacks for the K052109
***************************************************************************/
static void tile_callback(int layer,int bank,int *code,int *color,int *flags,int *priority)
{
*code |= (*color & 0x3f) << 8;
*color = layer_colorbase[layer] + ((*color & 0xc0) >> 6);
}
/***************************************************************************
Callbacks for the K051960
***************************************************************************/
static void sprite_callback(int *code,int *color,int *priority,int *shadow)
{
/* bit 4 = priority over zoom (0 = have priority) */
/* bit 5 = priority over B (1 = have priority) */
*priority = (*color & 0x30) >> 4;
*color = sprite_colorbase + (*color & 0x0f);
}
/***************************************************************************
Callbacks for the K051316
***************************************************************************/
static void zoom_callback(int *code,int *color,int *flags)
{
*flags = (*color & 0x40) ? TILE_FLIPX : 0;
*code |= ((*color & 0x03) << 8);
*color = zoom_colorbase + ((*color & 0x3c) >> 2);
}
/***************************************************************************
Start the video hardware emulation.
***************************************************************************/
VIDEO_START( bottom9 )
{
layer_colorbase[0] = 0; /* not used */
layer_colorbase[1] = 0;
layer_colorbase[2] = 16;
sprite_colorbase = 32;
zoom_colorbase = 48;
K052109_vh_start(machine,REGION_GFX1,NORMAL_PLANE_ORDER,tile_callback);
K051960_vh_start(machine,REGION_GFX2,NORMAL_PLANE_ORDER,sprite_callback);
K051316_vh_start_0(machine,REGION_GFX3,4,FALSE,0,zoom_callback);
}
/***************************************************************************
Display refresh
***************************************************************************/
VIDEO_UPDATE( bottom9 )
{
K052109_tilemap_update();
/* note: FIX layer is not used */
fillbitmap(bitmap,machine->pens[layer_colorbase[1]],cliprect);
// if (bottom9_video_enable)
{
K051960_sprites_draw(bitmap,cliprect,1,1);
K051316_zoom_draw_0(bitmap,cliprect,0,0);
K051960_sprites_draw(bitmap,cliprect,0,0);
tilemap_draw(bitmap,cliprect,K052109_tilemap[2],0,0);
/* note that priority 3 is opposite to the basic layer priority! */
/* (it IS used, but hopefully has no effect) */
K051960_sprites_draw(bitmap,cliprect,2,3);
tilemap_draw(bitmap,cliprect,K052109_tilemap[1],0,0);
}
return 0;
}
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