HP Surestore 330fx Optical Drive and Library SCSI-2 Command Reference - Page 137
Write Buffer Command 3BH, Mode Descriptions For 2.6 Gbyte Capacity Drives Only
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Table 2-87 Table 2-88 SCSI-2 Drive Command Set Write Buffer Command (3BH) Buffer Offset Indicates at what address the data is written, offset from the beginning of the buffer. Must be set to 0 when using Download Microcode ID. Parameter List Length Indicates the number of data bytes to be written in the buffer. Buffer Access Mode and ID Buffer Type Buffer ID Mode Buffer RAM 0 0 Download Microcode 1 4 Serial Number and Manufacturing Date 4 1 Customer and Product ID 15 1 Mode Descriptions (For 2.6 Gbyte Capacity Drives Only) Mode Description 1 Vendor specific 4 Download microcode 0 Data retained for subsequent read buffer command Buffer RAM Indicates the data buffer space used for transfer to and from the optical disk. Download Microcode Indicates the code the drive uses to operate. Serial Number and Manufacturing Date Code Indicates the drive's serial number and date code, which indicates the week of manufacturing. Customer and Product ID Indicates the Vendor Identification and Product Identification fields of the INQUIRY command Response Data. 2-100 Chapter 2