Manual background

7

SCSI PACKETS

 

 

 

in SG table, if zero,

 

 

 

SG is disabled

$12

00000000

00000000

Reserved

$14

xxxxxxxx

 

Command Control

 

0

 

Cache ON for type 13

 

 

 

controller only

 

1

 

Cache OFF for type

 

 

 

13 controller only

 

.0

 

Tape read forward for

 

 

 

tape devices that

 

 

 

support this

 

.1

 

Tape read reverse for

 

 

 

tape devices that

 

 

 

support this

 

..0

 

Tape do not suppress

 

 

 

illegal length

 

 

 

indication for tape

 

 

 

devices that support

 

 

 

this

 

..1

 

Tape suppress illegal

 

 

 

length indication

 

 

 

for tape devices that

 

 

 

support this

$15

xxxxxxxx

 

SCSI function ($00 =

 

 

 

Read, $04 = Write)

$16

00000xxx

 

Interrupt level (7

 

 

 

through 0)

 

 

 

(0 = polled mode)

 

 

 

(Notes 3, 5)

$17

xxxxxxxx

 

Vector number to use

 

 

 

upon return

 

 

 

(Notes 4, 5)

$18

xxxxxxxx

 

Status from SCSI

 

 

 

firmware (byte 2)

 

 

 

(Note 1)

$19

xxxxxxxx

 

Status from SCSI

 

 

 

firmware (byte 3)

 

 

 

(Note 1)

7-8

Page 88
Image 88
Emerson MVME147 manual in SG table, if zero