Operating instructions

SEPTEMBER 2005 MAGNUM 1X7 LTO AUTOLOADER
25-5
COMMAND STATUS
 The Parameter List Length for each WRITE BUFFER command must be
evenly divisible by 80h (128).
When all 131,072 bytes of the specified section have been downloaded to the
buffer, the autoloader disconnects from the SCSI bus and begins executing the
Boot Block code to program the selected EEPROM section. If the section
programmed was not section 7 (that is, the Mode bit was not set to 101b), the
autoloader will remain in Boot Block mode. It will reconnect to the host, send
Good status, and await additional WRITE BUFFER commands to program
remaining sections.
After the data for section 7 (Buffer ID 07h) has been downloaded and
programmed into the EEPROM, the autoloader will attempt a normal
functional boot. The autoloader will verify the checksum of the functional
code, and, if it is correct, begin to execute the functional code. The autoloader
will reconnect to the host, send Good status, and become ready for normal
operations.
25.3 COMMAND STATUS
The autoloader returns a status byte after processing the WRITE BUFFER
command. This section describes when each type of status byte might be
returned.
Good
The autoloader returns Good status when it is able to process the command
without errors.
Busy
The autoloader returns Busy status when it is processing a command for a
different initiator or when the autoloader is in the process of aborting a motion
command.
Reservation Conflict
The autoloader returns Reservation Conflict status when it is reserved or any
of its elements are reserved by a different initiator. See Chapter 20 for more
information about the RESERVE command.
Check Condition
The autoloader returns Check Condition status for the following reasons:
 The message system is enabled and a message error occurred while the
autoloader is processing the command.
 The autoloader detects an unrecoverable parity error while receiving the
CDB or microcode.
 The command was issued to an invalid LUN.
 A Unit Attention condition is pending for the initiator.