FUJITSU MCM3064AP - Manual (Page 100)

Host Interface
4-30 C156-E227-01EN
4.5.2 PACKET (A0h)
Table 4.20 PACKET command
Bit
7 6 5 4 3 2 1 0
CM 1 0 1 0 0 0 0 0
DH X X X DRV X X X X
CH X X X X X X X X
CL X X X X X X X X
SN X X X X X X X X
SC X X X X X X X X
FR X X X X X X X X
The PACKET command issues the ATAPI packet command. The OVL bit is
ignored.
When the DMA bit is 1, data is transferred in the DMA mode specified in the Set
Features command.