Modifying The Trigger Menu - HP E2416B User Manual

Logic Analyzer Configuration

Modifying the trigger menu

Modifying the trigger menu
The analysis probe captures all DMA cycles and attempts to decode them as
if they were CPU cycles. To filter out DMA cycles, set up the trigger menu so
that all cycles except HLDA cycles are stored.
DMA cycles are indicated by the assertion of the HLDA# signal. There are
two HLDA labels on the logic analyzer, HLDA and HLDA#. HLDA is
generated by the analysis probe for use by the inverse assembler.
To configure the Trigger menu to filter out DMA cycles:
•
Change the store "anystate" variable to store "≠ b".
•
Define term "b" as HLDA, under the HLDA label.
The figure below shows the Trigger menu configured to filter out DMA cycles.
Trigger Menu Setting for Filtering DMA cycles.
3-8 HP E2416B 80196 Analysis Probe