HP 220mx Guia do Utilizador descarregar pdf (Página 162)

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101

SCSI-2 Drive Command Set

Mode Sense (Group 2) Command (5AH)

Chapter 2 2-125

SCSI-2 Drive Commands

Mode Sense (Group 2) Command (5AH)

DBD A disable block descriptors (DBD) bit of 0 (default)

indicates that block descriptors are provided.

PC Page control defines the type of parameter values to be

returned as follows:

00 - Current Values

01 - Changeable Values

10 - Default Values

11 - Saved Values

Page Code Page code values are the same as for the Mode Select

(Group 0) command. If the page code is specified as 00H

or 3FH, all the pages are returned.

Allocation

Length Indicates the number of bytes that the indicator has

allocated for return of this data. A length of 0 indicates

that no data will be returned. This condition is not

considered an error. The drive will terminate the data -

in phase when the allocation length has been

transferred or when all available data has been

transferred to the initiator, whichever is less.

Table 2-119 Mode Select (Group 2) Command CDB

Byte 7 6 5 4 3 2 1 0

0 Operation Code (5AH)

1 Logical Unit Number

(0)

Rsvd

(0)

DBD Reserved (0)

2 PC Page Code

3-6 Reserved (0)

7 Allocation Length (MSByte)

8 Allocation Length (LSByte)

9 Reserved (0) Flag Link

1 2 ... 157 158 159 160 161 162 163 164 165 166 167 ... 377 378

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