Motorola MVME2600 Series User Manual Page 368

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.NETCTRL
5-44
5
.NETCTRL
Name
.NETCTRL - Implement special control routines
Code
$001D
Description
This routine is used to implement any special control routines that
cannot be accommodated easily with any of the other network
routines. At the present, the only deÞned packet is SEND packet,
which allows you to send a packet in the speciÞed format to the
speciÞed network interface driver. The required parameters are
passed in a command packet which has been built somewhere in
memory.
The address of the packet is passed as an argument to the routine.
This routine effectively performs an
NIOC command, but under
program control. All packets must be word-aligned. The format of
the packet structure, NIOCCALL, is shown below:
FEDCBA9876543210
$00 Controller LUN Device LUN
$02 Status Word
$04
Command IdentiÞer
Most SigniÞcant Word
$06 Least SigniÞcant Word
$08
Memory Address (Data Transfers)
Most SigniÞcant Word
$0A Least SigniÞcant Word
$0C
Number of Bytes (Data Transfers)
Most SigniÞcant Word
$0E Least SigniÞcant Word
$10
Status/Control Flags
Most SigniÞcant Word
$12 Least SigniÞcant Word
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