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Chapter 2 Media Changer Commands

Write Buffer Command (3Bh)

Quantum SuperLoader 3 Software Interface Guide 140

Write Buffer Command (3Bh)

The WRITE BUFFER command is used with READ BUFFER as a diagnostic

function and for downloading and updating microcode (firmware).

Figure 83 Write Buffer

Descriptor

Table 64 Write Buffer

Command Data

Bit

Byte765 4 3210

Operation Code (3Bh)

Logical Unit Number Reserved Mode

Buffer ID

3 - 5

(MSB)

Buffer Offset

(LSB)

6 - 8

(MSB)

Transfer Length

(LSB)

Unused Reserved Flag Link

Field Description

Mode The media changer supports the following values within the field. If any other

value is set, the media changer terminates the command with

CHECK

CONDITION

status and an ILLEGAL REQUEST sense key set.

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