Manual background

Attach/Detach Packet (all devices)

+$1E

 

+$20

 

Pointer RAM

 

+$22

 

 

 

 

Work Area

 

 

 

 

 

 

 

(MSW)

 

 

 

 

 

 

 

 

 

 

Pointer RAM

 

+$24

 

Logical Bytes per

 

+$26

Work Area

 

 

 

Block

 

 

 

(LSW)

 

 

 

 

 

 

 

 

 

 

 

 

 

+$28

Alt Sectors per Zone

 

No. Alt Cyls to Reserve

 

 

 

 

 

 

 

$00

00000xxx

 

 

 

Controller logical unit

 

 

 

 

 

number (SCSI

 

 

 

 

 

address 0-7)

$01

00000xxx

 

 

 

Device logical unit

 

 

 

 

 

number (0-7)

$02

xxxxxxxx

 

 

 

Status from SCSI

 

 

 

 

 

firmware (byte 0)

 

 

 

 

 

(Note 1)

$03

xxxxxxxx

 

 

 

Status from SCSI

 

 

 

 

 

firmware (byte 1)

 

 

 

 

 

(Note 1)

$04

00000000

 

 

 

Reserved

$05

xxxxxxxx

 

 

 

Step Rate -- number

 

 

 

 

 

of 40

intervals per

 

 

 

 

 

step (a value of 0

 

 

 

 

 

defaults to 6 ms)

$06

00000000

 

 

 

Reserved

$07

xxxxxxxx

 

 

 

Number of heads on

 

 

 

 

 

drive

 

$08

xxxxxxxx

xxxxxxxx

 

Number of cylinders

 

 

 

 

 

on drive

$0A

xxxxxxxx

xxxxxxxx

 

Precompensation

 

 

 

 

 

cylinder

$0C

xxxxxxxx

xxxxxxxx

 

Logical sectors per

 

 

 

 

 

track, physical = this

 

 

 

 

 

plus alternate sectors

 

 

 

 

 

per zone if zone =

 

 

 

 

 

track

 

$0E

00000000

00000000

 

Reserved

$10

xxxxxxxx

xxxxxxxx

 

SCSI drive attributes

7

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Image 93
Emerson MVME147 manual +$1E