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When clicking this button, the previous packet will be selected. It will be enabled if a previous packet is
present.
Go to next packet
When clicking this button, the next packet will be selected. It will be enabled if another packet is present.
9.3.2.2. Packet Detail View
If a packet is selected, the packet view will show its contents. The view has the following parts:
Packet Type
In this box the type of packet that is selected can be seen. If the packet type is unknown (e.g. a packet
with erroneous header) this box will say 'unknown packet'.
Show As Packet
This box has a popup list from which you can select a packet type. The packet will be displayed in the
format of the packet type selected here. Initially, it will be the same as the 'Packet Type' box. For
unknown packets, it will be 'unformatted'. This feature can be used to find out for an erroneous packet
what packet it most likely is meant to be, and also to display a packet in its unformatted hexadecimal
quadlet form.
Packet speed
These selection buttons will indicate the speed of the selected packet. They are not selectable by the
user, they just function as an indicator.
Fields
For primary packets the 'Fields' page shows all the fields the header of the packet is made of plus the
quadlet data fields if they are present. For Phy packets it displays all the fields the phy packet is made of.
And for unformatted packets, it just shows all the packet quadlets. The 'source ID' and 'destination ID'
fields are displayed in a special format. The bus number and node number are displayed separately, with
a ':' character in between them. If the bus number is 1023, it is substituted by the text 'local'.
Below is an example of the 'Fields' page for some read request packet.
Layout
The same fields displayed in the 'Fields' page are displayed in the 'Layout' page. But now the layout of the
packet is shown. Each line shows 32 bits, or one quadlet. The exact bit position of each field is shown,
including the field name (mostly some abbreviation because of space limitation) and the value. Reserved
fields and fields with fixed values are shown too. They have no field name, but only a value.
Below is an example of the 'Layout' page for the same packet as above.
Errors
If the selected packet has one or more errors, or if errors are detected because the selected 'Show As
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