HP C737990900 - Manual (Page 96)

96 Commands
If the fixed flag is set and the Transfer Length field is not zero and the Suppress
Illegal Length Indicator (SILI) flag is clear, a sequence of blocks of the currently
configured block length is to be returned, the number of blocks being indicated
in the Transfer Length field. If there is a sequence of blocks of this length on the
tape, they are returned to the initiator with GOOD status. If a block that is
longer than the configured length is encountered before the sequence is
complete, the blocks up to that block are returned followed by the configured
length from the record that was too long and Check Condition status (ILI will be
reported as described below). If a block that is shorter than the configured
length is encountered before the sequence is complete, the blocks up to that
block are returned followed by all of that block and Check Condition status (ILI
will be reported as described below). The current position is set after the last
block that was returned or partially returned
SILI Suppress Incorrect Length Indicator
0 The read operation is terminated when the length of a block (on the tape) differs from the
Transfer Length. Transfer Length bytes of data will have been transferred. The logical tape
position will be the EOM side of the illegal sized block.
1 The drive will not report CHECK CONDITION status if the only error is that the Transfer
Length is not equal to the actual block length recorded on the media.
Fixed 0 The Transfer Length field specifies the length of the transfer in bytes.
A single block of the length in Transfer Length is to be transferred.
■
If the next block on tape is of Transfer Length, it is transferred to the initiator
and GOOD status is returned.
■
If the next block on tape is not of Transfer Length:
■
If it is shorter, the whole block is transferred to the initiator.
■
If it is longer, only the length requested is returned and the logical position is
set to after the record.
■
If SILI = 0, CHECK CONDITION status is returned. ILI is reported as described
below.
■
If SILI = 1,
GOOD
status is returned.