HP 220mx Guia do Utilizador descarregar pdf (Página 140)

100

101

SCSI-2 Drive Command Set

Read Buffer Command (3CH)

Chapter 2 2-103

SCSI-2 Drive Commands

Buffer RAM Indicates the data buffer space used for the movement

of data to and from the optical disk.

Table 2-91 Read Buffer Descriptor

Byte 7 6 5 4 3 2 1 0

0 Offset Boundary

1 Buffer Capacity (MSB)

2 Buffer Capacity

3 Buffer Capacity (LSB)

Table 2-92 Buffer Access Mode and ID

Buffer Type Buffer ID Mode

Buffer RAM 0 0

Table 2-93 Mode Descriptions (For 2.6 Gbyte Capacity Drives Only)

Mode Description

0 Data retained for subsequent read buffer command

Table 2-94 Mode Descriptions (For 9.1 and 5.2 Gbyte Capacity Drives Only)

Mode Description

0 Data Mode (same as Mode 2)

2Data Mode

3 Descriptor Mode

1 2 ... 135 136 137 138 139 140 141 142 143 144 145 ... 377 378

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