DAP Technology 1394, Руководство по эксплуатации

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Serial Bus Protocol (SBP)
304 Copyright © DapTechnology B.V., 2005-2019 - All Rights Reserved., 5/20/2019
·
Management accesses
·
Command-agent accesses
· Orb reads and next orb-pointer re-read
·
Data transfers including data tables
·
Orb status and unsolicited status
· Bus resets
The details of the item selected in the relations tree, are displayed in the middle part of the Protocol View.
It displays the fields defined for the selected item and the values of those fields.
The SBP protocol is in fact a protocol to encapsulate other command-based protocols and supports the
movement of large blocks of data. Examples of such encapsulated command sets are the SCSI
command sets. The middle part of the SBP Protocol View (details) will show the contents of such
commands if the corresponding command set is supported by the Analyzer software. The name of these
commands are also shown in the left part (transactions relation).
Currently, the Analyzer supports version 2 of the SBP protocol (SBP2) and the following SCSI command
sets are supported:
· CDROM MMC2
·
Direct-Access SBC
· Optical-Memory SBC
· Printer SSC
·
Processor SPC
· Processor SPC2
·
Sequential-Access SSC
·
Simplified Direct-Access RBC
· SPC General
·
SPC2 General
·
Write-Once SBC
17.1.1. How to use it
To display the SBP results, select the SBP tab page in the Protocol View of the Recorder. The Protocol
View can be displayed by selecting it in the 'View' menu of the Recorder.
IMPORTANT:
You will need an SBP-Protocol license key to be able to select this view. However, if you open a Recorder
file that was made with a Analyzer with a valid SBP license key installed, the Protocol View can be
enabled, even if you do not have a valid SBP license key yourself. For more information about license
keys, see the section about the
License Manager .
The SBP-protocol analyzer needs some information from the Configuration ROM of a SBP device, to be
able to analyze the SBP transactions and packets corresponding to this device. It also needs the
information of a login command and response to be able to anaylze SBP commands. There are two ways
the analyzer can get this information: automatically or manually.
Automatically finding SBP information
To make sure the SBP analyzer finds the SBP information automatically, you should make sure that the
reading of Configuration ROM and the login command for the SBP unit are recorded. The
Configuration-ROM information is normally read after a bus reset. The login command normally is the first
command for an SBP unit.
One way to do this is to (re)connect the SBP device while the Recorder is recording data. You should also
take care that this recorded information is not removed from the recorder buffer because of
recorder-buffer overflow (cyclic recorder buffer). One way to do this is to stop the recorder before the
cyclic buffer (the buffer part before the trigger position) fills completely, or by generating a trigger before
this part is filled completely (see the Recorder for more information).
However, a reconnect command may be issued (instead of a login command) when the SBP unit was
disconnected for a short period (shorter than 20 seconds). In that case the analyzer misses some