HP 1660CP Series User Manual page 57

Using the Logic Analyzer
To use an inverse assembler
If you roll the trace list to a new position and press Invasm again, the inverse
assembler repeats the above process. However, it does not work backward in
the trace list from the starting position. This may cause differences in the
trace list above and below the point where you synchronized inverse
assembly. The best way to ensure correct inverse assembly is to synchronize
using the first state you know to be the first byte of an opcode fetch.
See Also
The Preprocessor User's Guide for more information on controlling inverse
assembly. If you have problems using the inverse assembler, see
"Troubleshooting" in chapter 11.
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