M68ICS05C Datasheet, PDF (100/250 Pages) –

SIMULATOR USER INTERFACE
6.13 TRACE WINDOW
Use the Trace Window (Figure 6-18) to view instructions captured while tracing is enabled.
Figure 6-18. Trace Window
To display the Trace Window, enter the SHOWTRACE command in the command line of the
ICS05CW Status Window.
To enable or disable tracing, enter the TRACE command. If tracing is off, the command will
toggle tracing on; if tracing is on, the command toggles tracing off.
The trace buffer is a 1024 instruction circular buffer that contains all addresses that have been
executed. When the trace window displays instructions, it disassembles instructions at the
addresses stored in the trace buffer. For this reason, the tracing function cannot be used for self-
modifying code. If a buffer slot does not have an address stored in it, the trace window displays
the phrase "No Trace Available". The number in the beginning of a trace line is the slot number
in the trace buffer. The slot number is an offset for the instruction in that slot compared to the
current instruction executing (slot number=0).
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M68ICS05COM/D