gx00_crtc_set_display_start
gx00_crtc_set_display_start(startadd,colour_depth1);
gx00_crtc_set_display_start(startadd,colour_depth1);
gx00_crtc_set_display_start(startadd,colour_depth1);
gx00_crtc_set_display_start(startadd,colour_depth);
gx00_crtc_set_display_start(startadd,colour_depth);
gx00_crtc_set_display_start(startadd,colour_depth);
status_t gx00_crtc_set_display_start(uint32 startadd,uint8 bpp);