Fujitsu MAX3073NC - SCSI,80, Dell DC961,Hard Drive Scsi Logical Interface Specifications page 88

Command Specifications
Header
Block Descriptor
Page Descriptor
Notes:
1. The MODE SELECT parameter is ordinarily different in its configuration depending on the
input/output device and the type of controller. It is also possible that current definitions may be
expanded in accordance with the expansion of the functions of the IDD in the future. In order
to assure independence of software from the individual specifications of input/output devices,
before the INIT issues this command, it should follow the procedure of using the MODE
SENSE and MODE SENSE EXTENDED command to determine the types of parameters the
TARG is actually equipped with and the attributes of those parameters, such as whether or not
they can be changed.
2. After changing anything in the "Block descriptor" or "Format parameters (Page 3)" with the
MODE SELECT or MODE SELECT EXTENDED command, it is impossible to execute a
command to access the data on the disk media until execution of the FORMAT UNIT command
is completed, and a CHECK CONDITION status (MEDIUM ERROR [=3] / Medium format
corrupted [=31-00]) is reported for all such commands.
The configuration and functions of the "Page descriptors" supported by the IDD are described in Section
4.1.
Note:
In the diagram that shows the configuration of each individual "Page Descriptor," the default column
shows that parameter's "default" value and the "variable" column shows whether or not it is possible
to vary that parameter ("1" indicates that it can be varied). The INIT can know those values and
attributes by using the MODE SENSE or MODE SENSE EXTENDED command.
3-26
Parameter
Page 1: Read/Write Error Recovery Parameter
Page 2 Disconnect/Reconnect Parameter
Page 3: Format Parameter
Page 4: Drive Parameter
Page 7: Verify Error Recovery Parameter
Page 8: Caching Parameter
Page A: Control Mode Parameter
Page C Notch Parameter
Page 19: Port Control Parameter (Sub Page 00)
Page 1C Information exceptions control parameter
Page 21: Additional Error Recovery Parameter
Byte Length
(Sub Page 01)
4
8 or 0
8 or 12
12 or 16
24
20 or 24
12
20
12
24
8
22
12
4
C141-C010