Emerson MVME147 Computer Hardware User Manual


 
Attach/Detach Packet (all devices)
7-15
7
$12 xxxxxxxx Controller type (refer
to controller type
table)
$13 00000000 Drive type (0 =
random access drive)
$14 00000000 Reserved
$15 xxxx1x00 SCSI function ($08 =
attach, $78 = new
attach,
$0C = detach)
$16 000000xx Interrupt level (7
through 0) (0 = polled
mode)
$17 xxxxxxxx Vector number to use
upon return
$18 xxxxxxxx Status from SCSI
firmware (byte 2)
(Note 1)
$19 xxxxxxxx Status from SCSI
firmware (byte 3)
(Note 1)
$1A 00000000 Reserved
$1B xxxxxxxx Retry count: number
of SCSI commands
(if this is set to 0, the
firmware disables
correction and turns
off retries in the
controller. Also, the
firmware does not
automatically retry
the SCSI command
except
"unit attention" and
"not diagnostics".)
$1C xxxxxxxx xxxxxxxx Sector/block size in
bytes (MSW)
$1E xxxxxxxx xxxxxxxx Sector/block size in
bytes (LSW)