Technical data

Signals window

Getting Started with ModelSim PE ModelSim PE Graphic Interface

The names of any VHDL composite types (arrays and record types) are shown in a hierarchical

fashion. Hierarchy also applies to Verilog nets and vector memories. (Verilog vector registers

do not have hierarchy because they are not internally represented as arrays.) To indicate

hierarchy, each name is preceded by a box that contains a plus sign (+), a minus sign (-), or may

be empty.

You can expand and contract the display to view the items by clicking on the boxes at the left

of the Window. You can make multiple selections in the Signals window; control-click to add

selections, shift-click to extend selections.

Forcing HDL item values

If you use the

Signals > Force Signal

menu bar command, you can change HDL item values.

The command brings up this dialog box.

Model

Sim

offers many options beyond changing an HDL item value. With the dialog box you

can also delay when the stimulus is to be applied, specify a second value to be applied, delay

that value’s application, and have Model

Sim

repeat your changes at the intervals you specify.

The

Force Signal

dialog box has these options:

•

Signal

Initially displays the selected signal or net; or you can specify another signal or net to

which you want to apply a stimulus.