If A Telnet Connection To The Emulation Probe Displays The Prompt - Agilent Technologies E5900B User Manual

Troubleshooting the Emulator
Troubleshooting Guide
• Cycle power on the emulation probe. (Turn off your target power first.)
• Check that the proper firmware is installed for the target board adapter
or the type of emulation probe shown on the front panel of the
emulation probe.
The proper firmware is installed at the factory but it could accidentally be
changed. A "ver" command will display the firmware which is currently
loaded. Refer to "Updating Firmware" on page 67 if the firmware is incorrect.
• Run the performance verification tests. Refer to "To run the emulation
probe performance verification tests" on page 103.
Connection to the wrong target or connection to the target with the pins
connected backward could potentially damage the emulation probe. Use the
performance verification tests to validate that the emulation probe itself is
working correctly.
If a telnet connection to the emulation probe
displays the prompt "?>"
The "?>" prompt indicates that the emulation probe is having trouble talking
to the target and it doesn't know what state the target is in.
• Validate that the emulation probe is connect to a powered up target.
Refer to Chapter 4, "Connecting the Emulator to Your Target System,"
beginning on page 47.
Also refer to the processor-specific emulation or solution User's Guide.
• Try initializing the emulation probe with the "init -c" command.
Some emulation probes need to read the Processor Version Register of the
target processor as the emulation probe is initialized.
• Check the emulation probe configuration settings.
Enter the cf command to display the configuration settings. Note that some
emulation probes must set the processor type with
cf proc=processor_type.
• Decrease the JTAG or BDM communication speed. Some targets need
slower speeds to properly communicate.
Use the cf speed command (cf procck for BDM).
86 E5900B / E5901B User's Guide Supplement