rem: void voodoo3_wait_idle()
add: voodoo3_wait_idle(void)
context: void voodoo3_wait_idle(){	int i = 0;	voodoo3_make_room(1);	voodoo3_write32(COMMAND_3D, COMMAND_3D_NOP);	while(1) {		i = (voodoo3_read32(STATUS) & STATUS_BUSY) ? 0 : i + 1;		if(i == 3) break;	}}