HP Surestore 1200ex Optical Drive and Library SCSI-2 Command Reference - Page 97
Table 2-53, Caching H, Maximum Pre-fetch Ceiling Length MSByte
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Table 2-53 SCSI-2 Drive Command Set Mode Sense (Group 0) Command (1AH) Caching Page 08H Caching Page 08H Byte 7 6 5 4 3 2 1 0 0 PS Rsvd (1) (0) Page Code (08H) 1 Page Length (0AH) 2 Reserved (0) WCE MF RCD 3 Reserved (0) 4 Disable Pre-fetch Transfer Length (MSByte) 5 Disable Pre-fetch Transfer Length (LSByte) 6 Minimum Pre-fetch (MSByte) 7 Minimum Pre-fetch (LSByte) 8 Maximum Pre-fetch (MSByte) 9 Maximum Pre-fetch (LSByte) 10 Maximum Pre-fetch Ceiling Length (MSByte) 11 Maximum Pre-fetch Ceiling Length (LSByte) PS WCE The Parameters Savable bit of 1 indicates this parameter page is savable in non-volatile RAM. A Write Cache Enable bit of 1 indicates write caching is enabled. A WCE bit of 0 indicates write caching is disabled. MF The Multiplication Factor bit is set to 1 and cannot be changed. This bit is set to the Minimum and Maximum Pre-Fetch fields during READ operations. If this bit is set to 0 by the MODE SELECT command, a CHECK CONDITION status is returned with the sense key/ additional sense code set to ILLEGAL REQUEST/ Invalid Parameter List. 2-60 Chapter 2