/********************************************************************** Signetics 2636 video chip **********************************************************************/ #ifndef S2636 #define S2636 typedef struct _s2636_t s2636_t; /* helpful macros to parse the bitmap returned by s2636_update */ #define S2636_IS_PIXEL_DRAWN(p) (((p) & 0x08) ? TRUE : FALSE) #define S2636_PIXEL_COLOR(p) ((p) & 0x07) s2636_t *s2636_config(UINT8 *work_ram, int screen_height, int screen_width, int y_offset, int x_offset); /* returns a BITMAP_FORMAT_INDEXED16 bitmap the size of the screen D0-D2 of each pixel is the pixel color D3 indicates whether the S2636 drew this pixel - 0 = not drawn, 1 = drawn */ mame_bitmap *s2636_update(s2636_t *s2636, const rectangle *cliprect); #endif