Agilent Technologies HP 1660E Series User Manual page 70

Using the Logic Analyzer
The Inverse Assembler
The particular sequences that each label requires depends on the type
of chip the inverse assembler was designed for. Because of this, inverse
assemblers cannot generally be transferred between platforms.
To run the inverse assembler, you must be sure the labels are spelled
correctly as shown here, or as directed in your inverse assembler
documentation. Even a minor difference such as not capitalizing each
letter will cause the inverse assembler to not work.
Inverse Assembly Synchronization
When you press the Invasm key to begin inverse assembly of a trace,
the inverse assembler begins with the first displayed state in the trace
list. This is called synchronization. It looks at the status bits (STAT)
and determines the type of processor operation, which is then
displayed under the STAT label. If the operation is an opcode fetch, the
inverse assembler uses the information on the data bus to look up the
corresponding opcode in a table, which is displayed under the DATA
label. If the operation is a data transfer, the data and corresponding
operation are displayed under the DATA label. This continues for all
subsequent states in the trace list.
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