| State
Display
The state display presents each PCI signal in column
form. Signals can be moved, inserted, deleted and color and radix defined.
Grouped signals such as address can be collapsed and expanded and their range specified.
Decoded Signals interpret information on the
bus to assist in understanding activity.
Sampling
The PCI850 has 3 basic sampling modes to capture bus
activity for state analysis;
CLOCK—every system clock
SYNC—address and data only
TRANSFER—complete cycles
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Triggering
Triggers define when the analyzer captures bus activity.
Once a trigger is encountered activity can be observed before and after
the trigger event. The position of the trigger can be moved within the
trace buffer controlling how much data is before or after the trigger
event. Triggers can be simple or complex.
Simple trigger
Any PCI signal or combination of signals.
Logically Combined Triggers
Any logical combination of simple triggers using
operators such as AND, OR, NOT, Exclusive OR.
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Sequential Triggers
This type of trigger is formed by a number of bus events
occurring in a specified order. To accomplish this levels are defined.
Each active level controls the analyzers operation based on bus events.
Jumps to other levels provide complex sequences.
Filtering
Trace filtering defines which events are captured and
stored in the analyzers trace buffer. This filtering of data provides only
events which are of interest to you.
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