User's Guide

Chapter 3 Emulated DLT7000 SCSI Commands
Write Buffer (3Bh)
274 Quantum DX-Series Software Interface Guide
Write Buffer (3Bh) 3
The WRITE BUFFER command is used with READ BUFFER as a
diagnostic function for testing the device data buffer, DMA engine, SCSI
bus interface hardware, and SCSI bus integrity. It is also used for
downloading and updating DLT microcode (firmware).
Table 222 WRITE
BUFFER Command
Descriptor Block -
Data Format
Bit/Byte 7 6 5 4 3 2 1 0
0
1
2
3-5
6-8
9
Operation Code (3Bh)
Logical Unit Number Reserved Mode
Buffer ID (00h)
(MSB)
Buffer Offset
(LSB)
(MSB)
Parameter List / Data Length
(LSB)
Unused Reserved
Flag (0) Link (0)
Tech Tip: Read and Write buffer is correctly implemented to
the SCSI protocol, but the information is not usable.