Technical data

CR-250 Command Syntax and Conventions ModelSim EE/SE Command Reference
GUI_expression_format
The GUI_expression_format is an option of several simulator commands that
operate within ModelSims GUI environment. The expressions allow the use of
criteria to locate and examine HDL items within the List and Wave windows. The
commands that use the expression format are:
down | up
(CR-70)
search for the expression in the List window
examine
(CR-81)
examine the value and compute mathematical functions of items in the List
window
right | left
(CR-136)
search for the expression in the Wave window
virtual signal
(CR-193))
define a virtual signal (a combination of real signals defined by the expression)
virtual function
(CR-184))
to define a virtual function (displays as a new signal defined by the expression)
searchLog
(CR-144)
search the current log files (WLF files) for the defined expression
Expressions may be typed directly on the VSIM command line, or you can use the
"The GUI Expression Builder"
(10-272).
Expression typing
GUI expressions are typed. The supported types consist of six scalar types and two
array types.
Scalar types
The scalar types are as follows: boolean, integer, real, time (64-bit integer),
enumeration and signal state. Signal states are represented by the nine VHDL
std_logic states: U X 0 1 Z H L W and -. Verilog states 0 1 x and z
are mapped into these states and the verilog strengths are ignored. Conversion is
done automatically when referencing Verilog nets or registers.
Array types
The array types supported are signed and unsigned arrays of signal states. This
would correspond to the VHDL std_logic_array type. Verilog registers are
automatically converted to these array types. The array type can be treated as