DEBI_COMMAND
saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff));
saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff));
saa7146_write(dev, DEBI_COMMAND, (count << 17) | (addr & 0xffff));
saa7146_write(dev, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff));