D64_CTRL1_EOF
iowrite32(D64_CTRL1_SOF | D64_CTRL1_EOF,
iowrite32(D64_CTRL1_SOF | D64_CTRL1_EOF |
flags |= (D64_CTRL1_EOF | D64_CTRL1_IOC);
flags = D64_CTRL1_SOF | D64_CTRL1_IOC | D64_CTRL1_EOF;