Creating HDL Text Modules, страница 56

•   

•  Click on the Apply button and then on the Close button

                                         3.9 Running Simulation

•  Prepare a DO macro file with following commands:

run 100 ns

pause

run @200 ns

pause

run @600 ns

pause

run @1200 us

•  Save the file as RUN.do and close the editor window

•  Switch to Files tab in Design Browser

•  Use Execute from context menu for RUN.do macro file

NOTE: 1200 MICRO not NANOSECONDS

                                         3.10 Running Simulation

•  Execution of the macro will be interrupted by pause commands. Then you will be able to use the G hotkey to toggle the value of GATE signal

•  At 100 ns toggle the GATE signal to 1 and then issue resume command in console to continue the simulation

•  At 200 ns toggle the GATE signal to 0 and then issue resume command in console

•  At 600 ns toggle the GATE signal to 1 and then issue resume command in console

NOTE: To toggle the GATE signal value, focus has to be set

to Waveform Editor window

                                         3.11 Running Simulation

•  Observe when the counter starts counting. /t=650ns/

•  You may use the Zoom In      , Zoom Out       , Zoom To Fit        and  Zoom  Range         buttons to change the scale in the Waveform Viewer

•  To quickly find signal values in the Waveform Viewer, right-click on the signal name, select Find. Type the value you want to find, select search direction (forward or backward) and click Find Next.

                                           3.12 Custom Stimulators

•  End the simulation (Simulation | End Simulation menu option).

•  Replace the Hotkey Stimulator Type for GATE signal with Custom Type. Click on the Apply button and then the Close button

•  The Custom Stimulator will use the existing waveform as simulation input

                                                  3.13 Bus Display Radix

•  You can change display radix and notation of bus signals. To change BCD_A signal display radix, select the bus and invoke the pop-up menu (right click on the signal). Choose the Properties option and the Binary radio-button.

•  You can change display radix and notation of bus signals. To change BCD_A signal display radix, select the bus and invoke the pop-up menu (right click on the signal). Choose the Properties option and the Binary radio-button.

                                                  3.14 Waveform Display Mode

•  You can also modify the size and color of waveform

•  For buses you can choose between Literal and Analog display mode

•  For scalar signals Literal and Logic modes are available

•  Close the waveform and save it as CNT_BCD.AWF

•  You can also modify the size and color of waveform

•  For buses you can choose between Literal and Analog display mode

•  For scalar signals Literal and Logic modes are available

•  Close the waveform and save it as CNT_BCD.AWF

                                        3.15 Other Waveform Features

Some additional waveform window features are available during simulation:

–  Edit Mode (you can drag signal events to change its shape)

–  Measurement Mode (to measure distance between specific points of timing)

–  Zoom Mode (zooming of timing)

–  Waveform comparison

–  Stretch option (you can select waveform signals and stretch their timing)

–  Bookmarks operations

–  Comments

–  Signal sorting

                                               4.1 Debugging features

•  This section will demonstrate the following operations:

–  How to work with Breakpoints

–  How to work with Watch window

–  How to Trace the execution of the code

–  How to Show Event Source

–  How to use Follow Object feature

–  How to interpret Dataflow view

–  How to use Advanced Dataflow

4.2 Setting up the debug session