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Also, the size of the range where access is permitted, specified in this command in the "Block
count" field in the CDB, specifies the number of logical data blocks from that starting point.
However, when zero is specified in the "Block count" field, access to the final logical data
block of the specified data space (User Space or CE Space), with the logical data block
specified in the "Logical block address" field as the starting point, is permitted. Fig. 3.19
shows the method for specification of the range where access is permitted in this command.
n: Value specified in the "Logical block address" field
n
n–1
m: Value specified in the "Block count" field
Figure 3.19 SET LIMITS Command: Specifying the Range where Access is Permitted
If "1" is specified in bit 1 of CDB byte 1, "RdInh (read inhibit)" flag or in bit 0, "WrInh (write
inhibit) flag, read operations or write operations is prohibited for linked commands following
this command, as shown below.
RdInh
WrInh
0
0
0
1
1
0
1
1
3 - 90
n+1
n+2
n+3
Range where access is permitted by linked commands
Read/write operations are permitted in the specified range.
Read operations only are permitted in the specified range.
Write operations only are permitted in the specified range.
Both read and write operations are prohibited. Only access by the
SEEK and SEEK EXTENDED commands is permitted within the
specified range.
C141-E039-01EN
n+m+1
Operation Limits
n+m
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