Emerson MVME147 manual Block Descriptor, Byte Offset

Models: MVME147

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Block Descriptor

A

3

08

Block descriptor length

 

 

 

 

Block Descriptor

 

 

 

 

0

00

Reserved

 

 

 

1

00

Number of blocks (MSB)

 

 

 

2

00

Number of blocks

 

 

 

3

00

Number of blocks (LSB)

 

 

 

4

00

Reserved

 

 

 

5

00

Block length (MSB)

 

 

 

6

(Note)

Block length

 

 

 

7

(Note)

Block length (LSB)

 

 

 

NOTE:

The block length is taken from the attach packet,

 

byte offset $1C, bytes per block.

The remaining 12 bytes that are transferred during the DATA OUT phase for the mode select command are the page 1 parameters.

Mode Select Parameter List: Page 1 Parameters for Winchester drives

 

BYTE OFFSET

VALUE

COMMENTS

 

 

 

 

 

 

 

 

0

1

Page code

 

 

 

1

0A

Page length

 

 

 

2

(Note 1)

AWRE, ARRE, TB, RC, ERR,

 

 

 

PER, DTE,

 

 

 

 

 

 

 

DCR flags

 

 

 

3

(Note 1)

Read retry count

 

 

 

4

(Note 2)

Correction span

 

 

 

5

(Note 2)

Heads offset count

 

 

 

6

(Note 2)

Data strobe offset count

 

 

 

7

00

Reserved

 

 

 

8

(Note 2)

Write retry count

 

 

 

9

00

Reserved

 

 

 

 

 

A

(Note 2)

Recovery time limit (MSB)

 

 

 

 

 

B

(Note 2)

Recovery time limit (LSB)

 

 

 

 

 

A-9

Page 157
Image 157
Emerson MVME147 manual Block Descriptor, Byte Offset