read_me.txt

包含两的关于Virtual JTAG的应用实例

Version Control using the Virtual JTAG Megafunction
==================================================================

The files contained in the archived Quartus II project, Top.qar contains a sample design that encodes basic information about file creation date and uses the Virtual JTAG interface to read out the information during runtime.  The Archived Project includes two Tcl files :

write_stamp.tcl
get_stamp.tcl


Each time you compile the project using the GUI, a QSF assignment ( set_global_assginment -name PRE_FLOW_SCRIPT_FILE) references the write_stamp.tcl, which generates an verilog file with the updated time stamp information.  After programming the target device, get_stamp.tcl generates a TK GUI with which you can query the device for the version control information.   Detailed instructions are included below. This project is created with the Quartus II software v8.1 and targeted to a Cyclone III starter board.


Useage flow:
==================================================================


1. Restore the archived project using the Quartus II software version 7.1 or later
2. Retarget the design to the specifications of your hardware and design scenario
3. Compile and program your target hardware
4. Run quartus_stp shell using the command prompt by typing : quartus_stp -s
5. set the path to design directory of the project
6. Invoke the Tk GUI by typing :  source get_stamp.tcl