Description

Solution

For Verilog Design:

1. Open the ISIM Properties window by Right Clicking on "Simulate Behavioral Model".

2. Use the switch -timescale and set the resolution accordingly in Other Compiler Options. For example "-timescale 1ps/1fs"

Syntax:

For VHDL Design: 

1. Open the ISIM Properties window by Right Clicking on Simulate Behavioral Model.

-timeprecision_vhdl<time_precision>

This specifies the time precision (unit of accuracy) for all VHDL design units.

The time_precision is entered as a number (1|10|100|...) followed by the unit (fs|ps|ns|us|ms|s).