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ModelSim EE/PLUS Reference Manual Simulator Command Reference

305

the selected signal is displayed. Case is ignored, but otherwise must be an exact string

match -- don't-care bits are not yet implemented.

<n>

Specifies to find the nth match. Optional. If less than n are found, the number found is

returned with a warning message, and the marker is positioned at the last match.

Examples

Returns 1 if a match is found, 0 if not. If the nth match is requested and only m are

found,

m < n, then it returns m.

down -noglitch -value FF23

Finds the next time which the selected vector transitions to FF23, ignoring glitches.

Goes to the previous transition on the selected signal.

The following examples illustrate search expressions that use a variety of signal

attributes, paths, array constants, and time variables. Such expressions follow the

"GUI_expression_format" (p236) and can be built with the aid of the "The GUI

Expression Builder" (p242).

down -expr {clk’rising && (mystate == reading) && (/top/u3/addr == 32’habcd1234)}

Searches down for an expression that evaluates to a boolean 1 when signal clk just changed

from low to high and signal mystate is the enumeration reading and signal /top/u3/addr is

equal to the specified 32-bit hex constant; otherwise is 0.

down -expr {(/top/u3/addr and 32’hff000000) == 32’hac000000}

Searches down for an expression that evaluates to a boolean 1 when the upper 8 bits of the

32-bit signal /top/u3/adder equals hex ac.

down -expr {((NOW > 23 us) && (NOW < 54 us)) && clk’rising && (mode == writing)}

Searches down for an expression that evaluates to a boolean 1 when logfile time is between

23 and 54 microseconds, and clock just changed from low to high and signal mode is

enumeration writing.