diff options
Diffstat (limited to 'src/mame/video/chqflag.c')
-rw-r--r-- | src/mame/video/chqflag.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/src/mame/video/chqflag.c b/src/mame/video/chqflag.c new file mode 100644 index 00000000000..0cc190b2ccf --- /dev/null +++ b/src/mame/video/chqflag.c @@ -0,0 +1,87 @@ +/*************************************************************************** + + video.c + + Functions to emulate the video hardware of the machine. + +***************************************************************************/ + +#include "driver.h" +#include "video/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 + +static int sprite_colorbase,zoom_colorbase[2]; + +/*************************************************************************** + + Callbacks for the K051960 + +***************************************************************************/ + +static void sprite_callback(int *code,int *color,int *priority,int *shadow) +{ + *priority = (*color & 0x10) >> 4; + *color = sprite_colorbase + (*color & 0x0f); +} + + +/*************************************************************************** + + Callbacks for the K051316 + +***************************************************************************/ + +static void zoom_callback_0(int *code,int *color,int *flags) +{ + *code |= ((*color & 0x03) << 8); + *color = zoom_colorbase[0] + ((*color & 0x3c) >> 2); +} + +static void zoom_callback_1(int *code,int *color,int *flags) +{ + *flags = TILE_FLIPYX((*color & 0xc0) >> 6); + *code |= ((*color & 0x0f) << 8); + *color = zoom_colorbase[1] + ((*color & 0x10) >> 4); +} + +/*************************************************************************** + + Start the video hardware emulation. + +***************************************************************************/ + +VIDEO_START( chqflag ) +{ + sprite_colorbase = 0; + zoom_colorbase[0] = 0x10; + zoom_colorbase[1] = 0x02; + + K051960_vh_start(machine,SPRITEROM_MEM_REGION,NORMAL_PLANE_ORDER,sprite_callback); + K051316_vh_start_0(machine,ZOOMROM0_MEM_REGION,4,FALSE,0,zoom_callback_0); + K051316_vh_start_1(machine,ZOOMROM1_MEM_REGION,8,TRUE,0xc0,zoom_callback_1); + + K051316_set_offset(0,7,0); + K051316_wraparound_enable(1,1); +} + +/*************************************************************************** + + Display Refresh + +***************************************************************************/ + +VIDEO_UPDATE( chqflag ) +{ + fillbitmap(bitmap,machine->pens[0],cliprect); + + K051316_zoom_draw_1(bitmap,cliprect,TILEMAP_DRAW_LAYER1,0); + K051960_sprites_draw(bitmap,cliprect,0,0); + K051316_zoom_draw_1(bitmap,cliprect,TILEMAP_DRAW_LAYER0,0); + K051960_sprites_draw(bitmap,cliprect,1,1); + K051316_zoom_draw_0(bitmap,cliprect,0,0); + return 0; +} |