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Note
E xpressions in
1
Trace Commands
2-8 Getting Started
Sometimes, the trace will show opcode fetches for instructions
which are not executed because of a transfer of execution to other
addresses (see line 13 in the previous trace list). This can happen
with microprocessors like the 68000 and the 80186 because they
have pipelined architectures or instruction queues which allow
them to prefetch the next few instructions before the current
instruction is finished executing.
You can use the < NEXT> and < PREV> keys to scroll through
the trace list a page at a time. The < uparrow> and
< downarrow> keys will scroll through the trace list a line at a
time. You can also display the trace list starting with a specific line
number (for example, display trace 100 < RETURN> ). Refer to
the "Displaying Traces" chapter for more information the trace list
display.
When a trigger condition is found but not enough states are
captured to fill trace memory, the status line will show that the
trace is still running. You can display all but the last captured state
in this situation; you must halt the trace to display the last captured
state.
When modifying the analysis specification (as shown throughout
the remainder of this chapter), you can enter expressions which
consist of values, symbols, and operators.
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