PLAY_ROUTING
OUTW(devc, 0xE400, PLAY_ROUTING);
OUTW(devc, INW(devc, PLAY_ROUTING) & 0x00FF,
PLAY_ROUTING);
OUTW(devc, (INW(devc, PLAY_ROUTING) & 0x00FF) |
0xE400, PLAY_ROUTING);