Sony CDU-541 - Page 81

CDU-541 CD-ROM DRIVE SCSI INTERFACE MANUAL
The SEND DIAGNOSTIC data contains an eight-byte parameter list defined as
follows.
Table 5-30: Send Diagnostic Data
==============================================================================
Bitl
Byte :
7
6
5
4
3
2
1
o
==============================================================================
o
,
,
Reserved
-----1-----------------------------------------------------------------------
1 1 Parameter Length
-----1-----------------------------------------------------------------------
2 1 ROM Diagnostic
-----1-----------------------------------------------------------------------
3 1 RAM Diagnostic
-----1-----------------------------------------------------------------------,
4 1 Data Buffer Diagnostic 1
-----1-----------------------------------------------------------------------1
5 1 Interface Diagnostic 1
-----1-----------------------------------------------------------------------1
6 I Reserved 1
-----1-----------------------------------------------------------------------1
7 1 Reserved 1
==============================================================================
The parameter length specifies the length in bytes of the following SEND
DIAGNOSTIC parameters. The sense data length does not include itself.
The ROM Diagnostic field if zero, requests that diagnostics not be performed
on the ROM. The ROM Diagnostic field if one, requests that diagnostics be·
performed on the controller. The ROM Diagnostic field if two, requests that
diagnostics be performed on the drive control.
The RAM Diagnostic field if zero, requests that diagnostics not be performed
on the RAM. The RAM Diagnostic field if one, requests that diagnostics be
performed on the controller. The RAM Diagnostic field if two, requests that
diagnostics be performed on the drive control.
The Data Buffer Diagnostic field if zero, requests that diagnostics not be
performed on the data buffer. The Data Buffer Diagnostic field if one,
requests that diagnostics be performed on the controller. The Data Buffer
Diagnostic field if two, requests that diagnostics be performed on the drive
control data buffer. The Data Buffer Diagnostic field if four, request that
diagnostics be performed on the drive control data error buffer.
The Interface Diagnostic field if zero, requests that diagnostics not be
performed on the interfaces. The Interface Diagnostic field if one, requests
that diagnostics be performed on the controller - drive control interface.
The Interface Diagnostic field if two, requests that diagnostics be performed
on the drive control - mechanism control interface.
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