blob: e1596f3f77c69d4ce33bbceef30a1c4719e89cdd (
plain) (
tree)
|
|
/***************************************************************************
Dottori Kun (Head On's mini game)
(c)1990 SEGA
Driver by Takahiro Nogi (nogi@kt.rim.or.jp) 1999/12/15 -
***************************************************************************/
#include "driver.h"
static UINT8 color;
WRITE8_HANDLER( dotrikun_color_w )
{
color = data;
video_screen_update_partial(0, video_screen_get_vpos(0));
}
VIDEO_UPDATE( dotrikun )
{
int offs;
pen_t back_pen = MAKE_RGB(pal1bit(color >> 3), pal1bit(color >> 4), pal1bit(color >> 5));
pen_t fore_pen = MAKE_RGB(pal1bit(color >> 0), pal1bit(color >> 1), pal1bit(color >> 2));
for (offs = 0; offs < videoram_size; offs++)
{
int i;
UINT8 data = videoram[offs];
UINT8 x = offs << 4;
UINT8 y = offs >> 4 << 1;
for (i = 0; i < 8; i++)
{
pen_t pen = (data & 0x80) ? fore_pen : back_pen;
/* I think the video hardware doubles pixels, screen would be too small otherwise */
*BITMAP_ADDR32(bitmap, y + 0, x + 0) = pen;
*BITMAP_ADDR32(bitmap, y + 0, x + 1) = pen;
*BITMAP_ADDR32(bitmap, y + 1, x + 0) = pen;
*BITMAP_ADDR32(bitmap, y + 1, x + 1) = pen;
x = x + 2;
data = data << 1;
}
}
return 0;
}
|