WRITE 0Ah | 6.Command Specification |
6.29.WRITE 0Ah
Bit | 7 |
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0 |
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| Operation | Code (0Ah) |
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1 |
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| Reserved |
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| Fixed | |
2 | (MSB) |
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| Transfer Length |
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3 |
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4 |
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5 |
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| Control |
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The WRITE command requests that the drive write the data that is transferred from the initiator to the logical position.
Fixed: The Fixed bit specifies whether
If the Fixed bit is set to ZERO, Variable Block mode is selected. A single block is transferred from the initiator and is written to the current logical tape position. If the WRITE command complete successfully, the tape is logically positioned after this block(EOM/P side).
If the Fixed Bit is set to one, the Transfer Length field specifies the number of blocks to be transferred to the current logical position. This is valid only if the drive is currently operating in Fixed Block mode, in other words, when it has been instructed to use
If the
If the drive encounters the physical EOM when attempting a WRITE, a CHECK CONDITION status is returned. The EOM and Valid bits are set and the Sense Key field in the Sense Data is set to VOLUME OVERFLOW. The Information field contains the residue count and the ASC and ASCQ fields are set to EOM/P Detected. The tape is physically positioned at EOM/P.
If the Transfer Length is ZERO, no data will be transferred and the current position on the logical unit will not be changed.
The drive flushes its write buffer to tape and appends an EOD under the following conditions:
1.Receipt of the following
READ
SPACE
ERASE
READ BUFFER
WRITE BUFFER REWIND LOAD/UNLOAD
MODE SELECT (Media Operation)
LOCATE
The buffer can be maintained through the following media commands, assuming that no other flush condition has been met, for example, write
WRITE
WRITE FILEMARKS (except count field of 0)
2.The write
SONY |
