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11
No Configuration
File Loaded
11
11
Selected File is
lncompatible
11
11
• • •
Inverse
Assembler Not
Found
11
No Inverse
Assembly
Incorrect Inverse
Assembly
No Activity on
Activity Indicators
HP E2418A
Verify that the appropriate module has been selected from the Load
{module} from File {filename} in the HP 16500 disk operation menu.
Selecting Load {All}
will cause incorrect operation when loading most
preprocessor interface configuration files.
The logic analyzer displays this message
if
you try to load a
configuration file for the wrong module. Ensure that you are loading
the appropriate configuration file for your logic analyzer.
This error occurs if you rename or delete the inverse assembler file that
is attached to the configuration file. Ensure that the inverse assembler
file is not renamed or deleted.
Verify that the inverse assembler has been synchronized by placing an
opcode at the top of the display (not at the input cursor) and pressing
the Invasm key (see "Inverse Assembler" in Chapter 2).
This problem is usually caused by a hardware problem in the target
system. A locked status line will often cause incorrect or incomplete
inverse assembly.
• Check the activity indicators for status lines locked in a high or
low state.
• Verify that the STAT, DATA, and ADDR format labels have not
been modified from their default values. These labels must
remain as they are configured by the configuration file.
• Verify that all microprocessor caches and memory managers
have been disabled. In most cases, if the microprocessor caches
and memory managers remain enabled you should still get
inverse assembly, but it may be incorrect since some of the
execution trace was not visible to the logic analyzer.
• Verify that storage qualification has not excluded storage of all
the needed opcodes and operands.
On the HP 1650A, HP 1651A, and HP 16510A Logic Analyzers if there
is no activity the fuse which allows power to the preprocessor interface
is probably blown. Check the fuse in the logic analyzer. On the other
logic analyzers, if there is no activity, one of the cables, board
connections, or preprocessor interface connections is probably loose.
Check all connections.
TMS32020/C25 Preprocessor Interface
Troubleshooting
A-3
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