Function Sync

src/boards/177.cpp:34–39

};

static void Sync(void) {
	setchr8(0);
	setprg8r(0x10, 0x6000, 0);
	setprg32(0x8000, reg & 0x1f);
	setmirror(((reg & 0x20) >> 5) ^ 1);
}

static DECLFW(M177Write) {
	reg = V;