HP 220mx Guia do Utilizador descarregar pdf (Página 97)

100

101

SCSI-2 Drive Command Set

Mode Sense (Group 0) Command (1AH)

Chapter 22-60

Caching Page 08H

PS The Parameters Savable bit of 1 indicates this

parameter page is savable in non-volatile RAM.

WCE 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.

Table 2-53 Caching Page 08H

Byte 7 6 5 4 3 2 1 0

0 PS

(1)

Rsvd

(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)

1 2 ... 92 93 94 95 96 97 98 99 100 101 102 ... 377 378

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