HP Surestore 80fx Optical Drive and Library SCSI-2 Command Reference - Page 139

SCSI-2 Drive Command Set Read Buffer Command (3CH) Table 2-90 Read Buffer Command (3CH) This command reads data from the drive data buffer. The transfer data consists of a 4-byte descriptor followed by the buffer data. Read Buffer Command CDB Byte 7 6 5 4 3 2 1 0 0 Operation Code (3CH) 1 Logical Unit Number Reserved (0) (0) Mode 2 Buffer ID 3 Buffer Offset (MSByte) 4 Buffer Offset 5 Buffer Offset (LSByte) 6 Parameter List Length (MSByte) 7 Parameter List Length 8 Parameter List Length (LSByte) 9 Reserved (0) Flag Link Mode Indicates which data format is to be used. Refer to Table 2-91 on page 2-103 for valid values. Buffer ID Indicates which buffer is to be used. Refer to Table 2-91 on page 2-103 for valid values. Buffer Offset Indicates at what address the data should be written, offset from the beginning of the buffer. Parameter List Length Indicates the number of data bytes to be read from the buffer. 2-102 Chapter 2