home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
AmigActive 10
/
AACD 10.iso
/
AACD
/
Games
/
MAME
/
src
/
vidhrdw
/
chqflag.c
< prev
next >
Wrap
C/C++ Source or Header
|
2000-03-26
|
3KB
|
127 lines
/***************************************************************************
vidhrdw.c
Functions to emulate the video hardware of the machine.
***************************************************************************/
#include "driver.h"
#include "vidhrdw/generic.h"
#include "vidhrdw/konamiic.h"
#include "cpu/z80/z80.h"
#define SPRITEROM_MEM_REGION REGION_GFX1
#define ZOOMROM0_MEM_REGION REGION_GFX2
#define ZOOMROM1_MEM_REGION REGION_GFX3
int sprite_colorbase,zoom_colorbase[2];
/***************************************************************************
Callbacks for the K051960
***************************************************************************/
static void sprite_callback(int *code,int *color,int *priority)
{
// *code |= (*color & 0x80) << 6;
*color = sprite_colorbase + (*color & 0x0f);
}
/***************************************************************************
Callbacks for the K051316
***************************************************************************/
static void zoom_callback_0(int *code,int *color)
{
*code |= ((*color & 0x03) << 8);
*color = zoom_colorbase[0] + ((*color & 0x3c) >> 2);
}
static void zoom_callback_1(int *code,int *color)
{
tile_info.flags = TILE_FLIPYX((*color & 0xc0) >> 6);
*code |= ((*color & 0x0f) << 8);
*color = zoom_colorbase[1] + ((*color & 0x30) >> 4);
}
/***************************************************************************
Start the video hardware emulation.
***************************************************************************/
int chqflag_vh_start( void )
{
sprite_colorbase = 0;
zoom_colorbase[0] = 0x10;
zoom_colorbase[1] = 0x04; /* not sure yet, because of bad dumps */
if (K051960_vh_start(SPRITEROM_MEM_REGION,NORMAL_PLANE_ORDER,sprite_callback))
{
return 1;
}
if (K051316_vh_start_0(ZOOMROM0_MEM_REGION,4,zoom_callback_0))
{
K051960_vh_stop();
return 1;
}
if (K051316_vh_start_1(ZOOMROM1_MEM_REGION,7,zoom_callback_1))
{
K051960_vh_stop();
K051316_vh_stop_0();
return 1;
}
K051316_set_offset(0, 8, 0);
K051316_wraparound_enable(1, 1);
return 0;
}
void chqflag_vh_stop( void )
{
K051960_vh_stop();
K051316_vh_stop_0();
K051316_vh_stop_1();
}
/***************************************************************************
Display Refresh
***************************************************************************/
void chqflag_vh_screenrefresh( struct osd_bitmap *bitmap, int fullrefresh )
{
int i;
K051316_tilemap_update_0();
K051316_tilemap_update_1();
palette_init_used_colors();
K051960_mark_sprites_colors();
/* set back pen for the zoom layer */
for (i = 0; i < 16; i++){
palette_used_colors[(zoom_colorbase[0] + i) * 16] = PALETTE_COLOR_TRANSPARENT;
}
if (palette_recalc())
tilemap_mark_all_pixels_dirty(ALL_TILEMAPS);
tilemap_render(ALL_TILEMAPS);
fillbitmap(bitmap,Machine->pens[0],&Machine->drv->visible_area);
K051316_zoom_draw_1(bitmap,0);
K051960_sprites_draw(bitmap,0,128);
K051316_zoom_draw_0(bitmap,0);
}