Quantum Audio Travan 40 Tape Drive STT3401A - Manual (Page 96)

Chapter 5 ATAPI Interface
Page 88 Seagate Travan 40 Product Manual
Buffer Offset: This field specifies where the first data byte received from the Host is
to be placed in the Buffer specified by the Buffer ID field. Values greater than 07FFh
will give Check Condition, Illegal Request.
Transfer Length: This field specifies the number of bytes to be written into the
Buffer by the Host. The value includes the four-byte Header.
WRITE BUFFER Header (Mode 000b)
Data Bits
Byte 7 6 5 4 3 2 1 0 Hex
0 0 0 0 0 0 0 0 0 00
1
2
3 MSB
Buffer Capacity
LSB
00
00
00
Buffer Capacity: All bytes of this field must be set to 00h or the command will
terminate with an Illegal Request (Sense Key 5).
When Firmware is downloaded and saved to “Flash” EPROM, it is possible to verify
the check-sum stored in the firmware against the check-sum calculated as the
firmware was loaded. See LOG SENSE command page 3E.