Stimuli demo

Stimuli generator demo

Topic:

Last updated: 13-07-09

VHDL code for simulation

Some VHDL statements simply can't be synthesized

Wait for 10 ns will delay a process by 10 nanoseconds

The only way to produce a delay like this in the real world will be 100 MHz clock.

		Even a Test Bench known to have an empty Entity are you allowed to define outputs or input/outputs






		The ISIM program comes as an integrated part of ISE. The WebPACK only offers the lite version (you can't miss the warnings) however will this not give problems as long you code not over 50000 lines of VHDL. An alternative to ISIM could be modelsim - which could be downloaded as a separate program (for free)

Example of a simulation - Multiplexer with 2 inputs

A process will continue forever ..