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6.19
RECEIVE DIAGNOSTIC (lCH)
BIT
BYTE
7
6
5
4
3
2
1
0
00
--;---I--;---I--;---I--i---r-~i---I---i--I---;--I---;--
01
Logical Unit Number
Reserved (0)
02
Reserved (0)
03
(MSB)
Data Length
04
Data Length
(LSB)
05
Reserved (0)
I
Flag
I
Link
Figure 6-32.
RECEIVE DIAGNOSTIC Command
This command sends analysis data to the Host after completion of
a SEND DIAGNOSTIC command.
Bytes 3 and 4 designate the size of
the available buffer (in bytes).
RECEIVE DIAGNOSTIC is used to transfer data to the host and must
immediately
follow
a
SEND
DIAGNOSTIC
command.
If
a
READ
DIAGNOSTIC command does not follow a SEND DIAGNOSTIC command or
the SEND DIAGNOSTIC command
has
no
associated data,
a
Bad
Argument (24 H ) error code will be posted.
The data length specified should be l04 H or more, although, if a
smaller buffer
is provided,
only that much data will be
transferred and the command will terminate normally.
The data buffer received as a result of a dump will be formatted
as shown in Figure 6-34.
500504-00
6-43
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