HP 64783A, User Manual

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The Elements of Coordinated Measurements
The Coordinated Measurement Bus (CMB) connects multiple emulators and allows
you to make synchronous measurements between those emulators.
For example, you might have a target system that contains an MC68040 processor
and another processor. You use HP 64700 Series emulators to replace both target
system processors, and connect the emulators using the CMB. You can run a
program simultaneously on both emulators. Or, you can start a trace on one
emulation-bus analyzer when the other emulator reaches a certain program address.
These measurements are possible with the CMB.
When HP 64700 Card Cages are connected together via the Coordinated
Measurement Bus (CMB), you can start and stop up to 32 emulators at the same
time.
You can use the analyzer in one HP 64700 to arm (that is, activate) the analyzers in
other HP 64700 Card Cages or to cause emulator execution in other HP 64700 Card
Cages to break into the monitor.
You can use the HP 64700’s BNC connector (labeled TRIGGER IN/OUT on the
lower left corner of the HP 64700 rear panel) to trigger an external instrument (for
example, a logic analyzer or oscilloscope) when the analyzer finds its trigger
condition. Also, you can allow an external instrument to arm the analyzer or break
emulator execution into the monitor.
Tasks that you perform to make coordinated measurements include:
•
Setting up for coordinated measurements.
•
Starting and stopping multiple emulators.
•
Driving trigger signals to the CMB or BNC.
•
Stopping program execution on trigger signals.
•
Arming analyzers on trigger signals.
Chapter 6: Making Coordinated Measurements
The Elements of Coordinated Measurements
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