Encore SIM EDITOR SOFTWARE User's Guide download pdf (Page 123)

100

101

4-19

Waveform Window

For detailed information on creating and using expressions, refer to

Chapter 15, Expressions. Also see Locating Events Using Breakpoint

Groups with Enabled Expressions on page 4-24.

Expanding Time to Display Exact Order of Events Using

Delta Cycles

The Delta Cycle feature allows you to display detailed value change

data, or delta cycles, that occurred within single sample times. If, for

example, at time 800 you see that 8 signals changed state, you could

expand time 800 to show the sequence of signal changes. Delta Cycle

is also useful when investigating glitches or race conditions, where a

signal may change multiple times within one sample time.

Delta Cycle Recording for Verilog

Enable reporting of delta cycle information in the VCD+ file using the

$vcdplusdeltacycleon command to use this function in post-

processing mode. For more information, refer to

Chapter 17, VCD+

(vpd) File Generation, System Tasks for Capturing Delta Cycle

Information.

When running in interactive mode, you can toggle recording of delta

cycle information in the Interactive Window by selecting Delta Cycle

Recording from the Sim Menu.

Note:

When you select Delta Cycle Recording in Interactive mode,

actual recording starts at the beginning of the next time sample.

If you are at or past the time for which you want delta cycle

information, turn on Record Delta Cycle Data then from the Sim

menu select Re-Exec to rerun the simulation.

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