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<html>
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<head>
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  <meta http-equiv="CONTENT-TYPE" content="text/html; charset=UTF-8">
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  <title>Verification Guidelines</title>
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</head>
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<body dir="ltr" lang="en-US">
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<h1><a name="socgen_project"></a><big>SOCGEN Project</big></h1>
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<h2><br>
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</h2>
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<h2><a name="manifesto"></a>Verification Guidelines</h2>
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<p><br>
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<br>
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</p>
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<p>Verification is the art of stimulating&nbsp; a component&nbsp;
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module and checking that it produces the correct outputs. Stimulations
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are designed to
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ensure that all of the components functions are exercised and any
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deviation from the expected value is reported as an error. Every
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component must have at least one test case but may have as many as
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needed to fully verify the design.<br>
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</p>
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<p>A complete test suite is required for every component module.&nbsp;
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Each test_case is simulated and the log file will indicate whether the
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test passed or failed. Other output files such as dump files may also
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be produced duging the simulation.<br>
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</p>
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<p><br>
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</p>
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<p></p>
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<br>
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<p><img style="width: 800px; height: 600px;" alt=""
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 src="../png/ver_fig1.png"><br>
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</p>
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<p><br>
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</p>
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<p>A test suite is needed for every piece of IP in the design and
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creating this suite can be a very labor intensive operation. It usually
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takes four hours to create the test_cases for each hour that was spent
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creating the rtl code.&nbsp; A full test must be run on every leaf cell
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component and some of these are repeated as the components are used as
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children of other components.&nbsp; It is essential that all test_cases
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are written so that they may be reused when testing the component when
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it it part of a parent component.<br>
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</p>
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<p><br>
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</p>
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<p><br>
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</p>
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<p><br>
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</p>
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<p><br>
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</p>
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<p><br>
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</p>
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<p><img style="width: 800px; height: 600px;" alt=""
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 src="../png/ver_fig2.png"><br>
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</p>
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<p>In this case a new component is created by combining&nbsp; two leaf
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cell components and its test_case is created by combining blocks from
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those two components test_cases.<br>
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</p>
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<p><br>
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</p>
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<p><br>
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</p>
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<p><br>
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<br>
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</p>
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<p><br>
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</p>
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<p><img style="width: 800px; height: 600px;" alt=""
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 src="../png/ver_fig3.png"><br>
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</p>
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<p><br>
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</p>
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<p>Every interface on the component is connected to it's own bfm model
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that contains all the tasks needed to test the interface. The calling
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sequences needed to preform a particular test are all loaded from a
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sperate file. It is important that each interface has its task calls in
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a seperate code block. The goal is to develope these models and task
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calls on&nbsp; the component simulation and then reuse them as the
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component is used in larger designs.&nbsp; Interleaving task calls for
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different models makes that difficult.<br>
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</p>
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<p><br>
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</p>
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<p><br>
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<br>
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</p>
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<p><br>
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</p>
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<h2><a name="manifesto"></a>guidelines for creating reusable test_cases<br>
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</h2>
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<br>
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&nbsp; All test_cases will have a master clock and reset signal.&nbsp;
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The DUT and all models will respond to the reset signal. Anything in
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test_define will only change state on the rising edge of clock.<br
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 style="font-family: serif;">
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<br style="font-family: serif;">
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<span style="font-family: serif;">&nbsp; All test_cases will be
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self-checking.&nbsp; Test suites are usually run by scripts and robots
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that need a simple method to determine wether a test_case finished and
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passed. </span><br style="font-family: serif;">
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<br style="font-family: serif;">
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<span style="font-family: serif;">&nbsp; All models, tasks and protocal
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checkers will use a common method to report&nbsp; if there is a failure.</span><br
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 style="font-family: serif;">
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<br style="font-family: serif;">
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<span style="font-family: serif;">&nbsp; All test sequences will use a
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common method to signal the successful completion of the test</span><br
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 style="font-family: serif;">
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<br style="font-family: serif;">
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<span style="font-family: serif;">&nbsp; All messages in the log file
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must use the following format:</span><br>
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<br style="font-family: serif;">
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<ul style="font-family: monospace;">
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  <li><big>Time stamp&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; This is the
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$realtime&nbsp; formated by %t</big></li>
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  <li><big>Instance Name&nbsp;&nbsp;&nbsp;&nbsp; This is obtained with
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%m</big></li>
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  <li><big>Message Type&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; This is either
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ERROR&nbsp; or WARNING. No type indicates informational message</big></li>
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  <li><big>Message&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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    </big><br>
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  </li>
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</ul>
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<br style="font-family: serif;">
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<br style="font-family: serif;">
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<p style="font-family: serif;">&nbsp;&nbsp; All test cases MUST have a
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finite run time.&nbsp; Use a TIMEOUT counter to stop the sim if it
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exceeds the expected number of clocks<br style="font-family: serif;">
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</p>
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<span style="font-family: serif;">&nbsp;&nbsp;
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<code><span style="font-family: serif;">All test_cases must be
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deterministic. If any pseudorandom delays are used they must be
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"seeded" and repeatable from run to run.</span></code></span><code
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 style="font-family: serif;"><br>
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<br>
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<br>
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&nbsp;<span style="font-family: serif;"> </span></code><span
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 style="font-family: serif;"><code><span style="font-family: serif;">Do
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not interweave threads in the test_define blocks. Each block should
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only access a single BFM.</span><br style="font-family: serif;">
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<br style="font-family: serif;">
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<br style="font-family: serif;">
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<span style="font-family: serif;">&nbsp; Plan on designs where you will
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need to test multiple instances of a component</span><br
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 style="font-family: serif;">
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<br style="font-family: serif;">
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<span style="font-family: serif;">&nbsp; Only test a single
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configuration or mode in any test_case. If you need to test 3 different
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modes then create 3 different test_cases. The exception to this is when
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there is a mission mode requirement to switch modes and you are testing
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that switch.&nbsp; </span><br style="font-family: serif;">
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</code></span>
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<p style="font-family: serif;"><br>
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</p>
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<p><br>
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</p>
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<p><br>
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</p>
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<p><br>
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</p>
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<p><br>
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</p>
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<p><br>
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</p>
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<p><br>
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</p>
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<p><br>
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</p>
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<p><br>
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<br>
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</p>
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<p><br>
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</p>
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<h2><a name="manifesto"></a>simulation directory (sim)<br>
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</h2>
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<p><br>
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</p>
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<big><code>
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./sim<br>
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&nbsp; +/bin<br>
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&nbsp;&nbsp; &nbsp;&nbsp; Makefile<br>
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&nbsp; +/bench<br>
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&nbsp;&nbsp; &nbsp;&nbsp; +verilog<br>
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&nbsp;&nbsp; &nbsp; &nbsp;&nbsp; TestBench<br>
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&nbsp;&nbsp; &nbsp; &nbsp;&nbsp; +models<br>
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&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; model1<br>
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&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; model2<br>
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&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; .<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; .<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; .<br>
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&nbsp; +/lib<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; +lib_part1<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; lib_part(s).v<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; +lib_part2<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .<br>
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</code><code>&nbsp; +/run</code><br>
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<code>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; +test_case1<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; filelist<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; dmp_define<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; modellist<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; dut<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; test_define<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; liblist<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; TB.defs<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; +test_case2<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .<br>
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&nbsp; +/log<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; test_case1.log<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; test_case2.log<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .<br>
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&nbsp; +/out<br>
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&nbsp;</code><code>&nbsp;&nbsp;&nbsp;&nbsp; test_case1.vcd<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; test_case2.vcd<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .<br>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .</code><br>
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</big>
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<code><ouabache design="" works=""><big><br>
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<br>
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<br>
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</big>
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<br>
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</ouabache></code>
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<p>Each component will have a ./sim directory for the test suite.
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Typing:<br>
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</p>
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<p><big><big><br>
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<small><span style="font-family: monospace;">
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&lt;&gt;:~$&gt;cd ./sim/bin</span><br style="font-family: monospace;">
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</small><span style="font-family: monospace;"><small>
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&lt;&gt;:~$&gt;make run_sims</small><br>
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</span></big></big></p>
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<p><big><big><span style="font-family: monospace;"><br>
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</span></big></big>
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</p>
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will run the entire test suite. After that has been done then
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individual test_cases may be rerun by changing into their test_case
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directory and typing:<br>
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<code><ouabache design="" works=""><br>
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<br>
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</ouabache></code>
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<p><big><big><span style="font-family: monospace;"><small>&lt;&gt;:~$&gt;make
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sim</small></span></big></big>
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</p>
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<p><br>
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</p>
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<p>Each test_case will produce a log file that may be parsed for the
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string "PASSED" to indicate that the sim finished. If so then the log
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file should be parsed for the strings "ERROR" and "WARNING" to see if
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there were and errors or warnings. <br>
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</p>
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<p>Simulating a test_case requires involking a verilog simulator and
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passing it command line arguments and a TestBench file. Icarus verilog
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is the default simulator for the socgen project. Socgen uses a minumal
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command line and instead puts most needed information in the TestBench
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file.&nbsp; The only command line option is to set the VCD flag if a
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value change dump file is needed.<br>
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</p>
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<p><br>
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</p>
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<p><br>
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<br>
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<br>
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<br>
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<br>
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</p>
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<h2><a name="manifesto"></a>TestBench file<br>
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</h2>
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<code>
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<ouabache design="" works="">--------------------------------------------------------------------------------------------------------------------------------------<br>
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<br>
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`include&nbsp; "./TB.defs"<br>
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<br>
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`ifndef&nbsp;&nbsp;&nbsp;&nbsp; TIMESCALE<br>
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`define&nbsp;&nbsp;&nbsp;&nbsp; TIMESCALE&nbsp;&nbsp; 1ns/1ns<br>
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`endif<br>
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<br>
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<br>
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`ifndef&nbsp;&nbsp;&nbsp;&nbsp; TIMEFORMAT<br>
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`define&nbsp;&nbsp;&nbsp;&nbsp; TIMEFORMAT&nbsp; $timeformat(-6, 2, "
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us", 14);<br>
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`endif<br>
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<br>
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<br>
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`ifndef&nbsp;&nbsp;&nbsp;&nbsp; PERIOD<br>
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`define&nbsp;&nbsp;&nbsp;&nbsp; PERIOD&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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40.00000 <br>
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`endif<br>
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<br>
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`ifndef&nbsp;&nbsp;&nbsp;&nbsp; TIMEOUT<br>
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`define&nbsp;&nbsp;&nbsp;&nbsp; TIMEOUT&nbsp;&nbsp;&nbsp;&nbsp; 200000<br>
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`endif<br>
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<br>
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<br>
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`timescale `TIMESCALE<br>
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<br>
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<br>
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`include&nbsp; "./filelist"<br>
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`include&nbsp; "./liblist"<br>
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`include&nbsp; "./modellist"<br>
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<br>
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<br>
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<br>
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<br>
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module TB();<br>
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<br>
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wire clk;<br>
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wire reset;<br>
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<br>
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`include "./dut"<br>
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`include "./test_define"<br>
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<br>
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<br>
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`ifdef VCD<br>
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initial<br>
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begin<br>
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`include "./dmp_define"<br>
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end<br>
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`endif<br>
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<br>
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clock_gen<br>
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#(.PERIOD(`PERIOD),<br>
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&nbsp; .TIMEOUT(`TIMEOUT))<br>
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cg <br>
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( .clk&nbsp;&nbsp; ( clk&nbsp;&nbsp; ),<br>
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&nbsp;
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.reset ( reset )<br>
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);<br>
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<br>
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<br>
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<br>
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<br>
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endmodule<br>
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</ouabache></code><span style="font-family: monospace;"><br>
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--------------------------------------------------------------------------------------------------------------------------------------<br>
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</span>
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<p><span style="font-family: monospace;"><br>
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</span></p>
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<p><br>
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<span style="font-family: monospace;"></span></p>
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<p>A single&nbsp; TestBench file provides the infrastructure for all
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test cases. The actual testing is determined by the data contained in
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six files in the ./sim/run/test_case directory. The TestBench file
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creates a top level module named TB and instantiates a clock_reset
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generator module to provide each test_case with a clock and a reset
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signal. It also provides a vcd dump&nbsp; and timeout&nbsp; functions
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for each test_case.<span style="font-family: monospace;"><br>
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</span></p>
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<p><span style="font-family: monospace;"><br>
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</span></p>
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<p><span style="font-family: monospace;"><br>
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</span></p>
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<h2><a name="manifesto"></a>TB.defs <br>
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</h2>
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<p><span style="font-family: monospace;">--------------------------------------------------------------------------------------------------------------------------------------</span>
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</p>
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<code>
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`define&nbsp;&nbsp;&nbsp;&nbsp; TIMESCALE&nbsp;&nbsp; 1ns/1ns<br>
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`define&nbsp;&nbsp;&nbsp;&nbsp; TIMEFORMAT&nbsp; $timeformat(-6, 2, "
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us", 14);<br>
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`define&nbsp;&nbsp;&nbsp;&nbsp; PERIOD&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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40.0000 <br>
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`define&nbsp;&nbsp;&nbsp;&nbsp; TIMEOUT&nbsp;&nbsp;&nbsp;&nbsp; 200000<br>
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</code>
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<p></p>
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<p><span style="font-family: monospace;">--------------------------------------------------------------------------------------------------------------------------------------<br>
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</span></p>
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<p><span style="font-family: monospace;"><br>
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</span></p>
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<p>The TB.defs file may be used to set up the timescale and master
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clock period for the simulation.&nbsp; Any model or lib part that needs
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to reset the timescale back to the system default must use:<br>
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</p>
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<p><code>`timescale `TIMESCALE<br>
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</code></p>
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<p><code><br>
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<span style="font-family: serif;">Do NOT use</span><br>
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</code></p>
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<p><code>`include "./timescale.v"<br>
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</code></p>
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<p><code><br>
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<span style="font-family: serif;">The socgen project does not contain
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any timescale.v file.&nbsp; All socgen rtl code is preprocessed before
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it is passed to simulation and the value of the timescale may change
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depending on the simulation. All ip components must only contain
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synthesisable code and should not have any need for timescale.<br>
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</span></code></p>
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<p><code><span style="font-family: serif;">TIMEFORMAT will set the
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format that is used when time is displayed using the %t format . All
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$display statements must start by displaying $realtime using the %t
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format so every line in the log has a time stamp. Any display statement
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from an instantiated module must also have %m to print out it's
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instance name. If the message is an error or a warning then the strings
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ERROR or WARNING must be used so that this information may be parsed
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from the log file.<br>
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<br style="font-family: serif;">
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</span></code></p>
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<p><span style="font-family: monospace;"><br>
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</span>The TB.defs file may also
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be used to pass the size and location&nbsp; of an embedded&nbsp; bit
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file to the device_under_test<span style="font-family: monospace;"> <br>
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</span></p>
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<p><span style="font-family: monospace;">--------------------------------------------------------------------------------------------------------------------------------------</span></p>
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<p><span style="font-family: monospace;">`define&nbsp; ROM_WORDS 2048 <br>
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`define&nbsp; ROM_ADDR&nbsp;&nbsp; 11&nbsp; <br>
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`define&nbsp; ROM_WIDTH&nbsp; 12&nbsp; <br>
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`define&nbsp; ROM_FILE "../../../../../sw/mouse/mouse.abs12"<br>
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</span><span style="font-family: monospace;">--------------------------------------------------------------------------------------------------------------------------------------</span><br>
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</p>
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<p>The path is the relative path from the test_case run directory.<span
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 style="font-family: monospace;"><br>
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</span></p>
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<p><span style="font-family: monospace;"><br>
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</span></p>
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<h2><a name="manifesto"></a>filelist </h2>
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<p style="font-family: monospace;">--------------------------------------------------------------------------------------------------------------------------------------<br>
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</p>
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<p style="font-family: monospace;">`include
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"../../../rtl/gen/sim/soc_mouse.v"<br>
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`include "../../../../pic16c5x/rtl/gen/sim/pic16c5x.v"<br>
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`include
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"../../../../../children/logic/ip/io_module/rtl/gen/sim/io_module_mouse.v"<br>
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`include
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"../../../../../children/logic/ip/ps2_interface/rtl/gen/sim/ps2_interface.v"<br>
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`include "../../../../../children/logic/ip/uart/rtl/gen/sim/uart.v"<br>
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</p>
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<code style="font-family: monospace;"></code>
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<span style="font-family: monospace;">--------------------------------------------------------------------------------------------------------------------------------------</span>
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<p><br>
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</p>
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<p>The filelist uses `include statements to load all the rtl files into
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the simulation.The paths are&nbsp; relative from the test_case run
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directory. Note that all the verilog files have been post-processed and
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search directories or include directories are not needed.
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</p>
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<p><br>
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</p>
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<h2><a name="manifesto"></a>liblist</h2>
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<p><span style="font-family: monospace;">--------------------------------------------------------------------------------------------------------------------------------------</span>
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</p>
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<code>
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<br>
463 
`include "../../lib/cde_sram/cde_sram.v"<br>
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`include "../../lib/cde_lifo/cde_lifo.v"<br>
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`include "../../lib/cde_synchronizers/cde_sync_with_hysteresis.v"<br>
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<br>
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</code>
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<span style="font-family: monospace;">--------------------------------------------------------------------------------------------------------------------------------------</span><br>
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<p>The liblist uses `include statements to load all the generic lib
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models&nbsp; into
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the simulation.The paths are&nbsp; relative from the test_case run
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directory. Note that these libs may be replaced&nbsp; by vendor
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specific instances when the design is&nbsp; synthesised into gates.<br>
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</p>
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<p><br>
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</p>
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<p></p>
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<p><br>
479 
</p>
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<h2><a name="manifesto"></a>modellist</h2>
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<p><span style="font-family: monospace;">--------------------------------------------------------------------------------------------------------------------------------------</span>
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</p>
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<code><br>
484 
`include "../../bench/verilog/models/clock_gen.v"<br>
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`include "../../bench/verilog/models/ps2_model.v"&nbsp;&nbsp;&nbsp; <br>
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`include "../../bench/verilog/models/iobuftri.v"&nbsp;&nbsp;&nbsp; <br>
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</code><span style="font-family: monospace;"></span><code><br>
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</code>
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<span style="font-family: monospace;">--------------------------------------------------------------------------------------------------------------------------------------</span><br>
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<br>
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This list loads all of the simulation models used in the simulation.<br>
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<br>
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<p><br>
494 
<br>
495 
</p>
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<h2><a name="manifesto"></a>dut<br>
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</h2>
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<p><span style="font-family: monospace;">--------------------------------------------------------------------------------------------------------------------------------------</span></p>
499 
<p><code>reg&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
500 
device_write;<br>
501 
reg&nbsp; [7:0]&nbsp;&nbsp; device_tx_data;<br>
502 
reg&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; device_parity;<br>
503 
reg&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; device_ack;<br>
504 
reg&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; device_stop;<br>
505 
wire&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; device_rx_read;<br>
506 
wire [7:0]&nbsp;&nbsp; device_rx_data;<br>
507 
wire&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; device_rx_parity;<br>
508 
wire&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ps2_data_pad_oe;<br>
509 
wire&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ps2_data_pad_in;<br>
510 
wire&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ps2_data;<br>
511 
wire&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ps2_clk_pad_oe;<br>
512 
wire&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ps2_clk_pad_in;<br>
513 
wire&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ps2_clk;<br>
514 
<br>
515 
<br>
516 
<br>
517 
wire [7:0]&nbsp;&nbsp;&nbsp;&nbsp; portaout;<br>
518 
wire [7:0]&nbsp;&nbsp;&nbsp;&nbsp; portbout;<br>
519 
wire [7:0]&nbsp;&nbsp;&nbsp;&nbsp; portcout;<br>
520 
<br>
521 
<br>
522 
wire [9:0]&nbsp;&nbsp;&nbsp;&nbsp; y_pos;<br>
523 
wire [9:0]&nbsp;&nbsp;&nbsp;&nbsp; x_pos;<br>
524 
wire&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
525 
new_packet;<br>
526 
wire&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
527 
ms_mid; <br>
528 
wire&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
529 
ms_right;&nbsp; <br>
530 
wire&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
531 
ms_left;&nbsp; <br>
532 
<br>
533 
<br>
534 
<br>
535 
wire&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
536 
txd_pad_out;<br>
537 
wire&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
538 
rxd_pad_in;<br>
539 
wire&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
540 
cts_pad_in;<br>
541 
wire&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
542 
rts_pad_out;&nbsp; <br>
543 
<br>
544 
<br>
545 
// Instantiate one CPU to be tested.<br>
546 
soc_mouse<br>
547 
#(<br>
548 
.ROM_WORDS ( `ROM_WORDS ), <br>
549 
.ROM_ADDR&nbsp; ( `ROM_ADDR&nbsp; ),&nbsp; <br>
550 
.ROM_WIDTH ( `ROM_WIDTH ), <br>
551 
.ROM_FILE&nbsp; ( `ROM_FILE&nbsp; )<br>
552 
)<br>
553 
dut(<br>
554 
&nbsp;&nbsp; .clk&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; (
555 
clk&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ),<br>
556 
&nbsp;&nbsp; .reset&nbsp;&nbsp;&nbsp; (
557 
reset&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ),<br>
558 
<br>
559 
&nbsp;&nbsp; .ps2_data_pad_in ( ps2_data_pad_in ),<br>
560 
&nbsp;&nbsp; .ps2_clk_pad_in&nbsp; ( ps2_clk_pad_in&nbsp; ),<br>
561 
<br>
562 
&nbsp;&nbsp; .ps2_data_pad_oe ( ps2_data_pad_oe ),<br>
563 
&nbsp;&nbsp; .ps2_clk_pad_oe&nbsp; ( ps2_clk_pad_oe&nbsp; ),<br>
564 
<br>
565 
<br>
566 
&nbsp;&nbsp; .portaout&nbsp;&nbsp;&nbsp; ( portaout&nbsp;&nbsp;&nbsp; ),<br>
567 
&nbsp;&nbsp; .portbout&nbsp;&nbsp;&nbsp; ( portbout&nbsp;&nbsp;&nbsp; ),<br>
568 
&nbsp;&nbsp; .portcout&nbsp;&nbsp;&nbsp; ( portcout&nbsp;&nbsp;&nbsp; ),<br>
569 
<br>
570 
<br>
571 
&nbsp;&nbsp; .y_pos&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (
572 
y_pos&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ),<br>
573 
&nbsp;&nbsp; .x_pos&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (
574 
x_pos&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ),<br>
575 
&nbsp;&nbsp; .new_packet&nbsp; ( new_packet&nbsp; ),<br>
576 
&nbsp;&nbsp; .ms_mid&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (
577 
ms_mid&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ), <br>
578 
&nbsp;&nbsp; .ms_right&nbsp;&nbsp;&nbsp; ( ms_right&nbsp;&nbsp;&nbsp;
579 
),&nbsp; <br>
580 
&nbsp;&nbsp; .ms_left&nbsp;&nbsp;&nbsp;&nbsp; (
581 
ms_left&nbsp;&nbsp;&nbsp;&nbsp; ),&nbsp; <br>
582 
<br>
583 
<br>
584 
<br>
585 
&nbsp;&nbsp; .txd_pad_out ( loop1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ),<br>
586 
&nbsp;&nbsp; .rxd_pad_in&nbsp; (
587 
loop1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ),<br>
588 
&nbsp;&nbsp; .cts_pad_in&nbsp; (
589 
loop2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ),<br>
590 
&nbsp;&nbsp; .rts_pad_out ( loop2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
591 
)&nbsp; <br>
592 
<br>
593 
&nbsp;&nbsp; );<br>
594 
<br>
595 
<br>
596 
iobuftri<br>
597 
data_tri_buf<br>
598 
&nbsp; (<br>
599 
&nbsp;&nbsp; .i&nbsp;&nbsp; (
600 
1'b0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ),<br>
601 
&nbsp;&nbsp; .oe&nbsp; ( ps2_data_pad_oe ),<br>
602 
&nbsp;&nbsp; .o&nbsp;&nbsp; ( ps2_data_pad_in ),<br>
603 
&nbsp;&nbsp; .pad ( ps2_data&nbsp;&nbsp;&nbsp; )<br>
604 
&nbsp;&nbsp; );<br>
605 
<br>
606 
<br>
607 
iobuftri<br>
608 
clk_tri_buf<br>
609 
&nbsp; (<br>
610 
&nbsp;&nbsp; .i&nbsp;&nbsp; ( 1'b0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
611 
),<br>
612 
&nbsp;&nbsp; .oe&nbsp; ( ps2_clk_pad_oe ),<br>
613 
&nbsp;&nbsp; .o&nbsp;&nbsp; ( ps2_clk_pad_in ),<br>
614 
&nbsp;&nbsp; .pad ( ps2_clk&nbsp;&nbsp;&nbsp; )<br>
615 
&nbsp;&nbsp; );<br>
616 
<br>
617 
<br>
618 
<br>
619 
pullup ua0(ps2_clk);<br>
620 
pullup ua1(ps2_data);<br>
621 
<br>
622 
<br>
623 
ps2_model <br>
624 
#(.CLKCNT(10'h177))<br>
625 
ps2<br>
626 
(<br>
627 
&nbsp;&nbsp;
628 
.clk&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
629 
(
630 
clk&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
631 
),<br>
632 
&nbsp;&nbsp;
633 
.reset&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
634 
(
635 
reset&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
636 
),
637 
<br>
638 
&nbsp;&nbsp;
639 
.send&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
640 
(
641 
device_write&nbsp;&nbsp;&nbsp;&nbsp;
642 
),<br>
643 
&nbsp;&nbsp;
644 
.send_data&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
645 
(
646 
device_tx_data&nbsp;&nbsp;
647 
),<br>
648 
&nbsp;&nbsp;
649 
.device_parity&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (
650 
device_parity&nbsp;&nbsp;&nbsp; ),<br>
651 
&nbsp;&nbsp;
652 
.device_ack&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
653 
(
654 
device_ack&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
655 
),<br>
656 
&nbsp;&nbsp;
657 
.device_stop&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
658 
(
659 
device_stop&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
660 
),<br>
661 
&nbsp;&nbsp;
662 
.device_rx_read&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (
663 
device_rx_read&nbsp;&nbsp; ),<br>
664 
&nbsp;&nbsp;
665 
.device_rx_data&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (
666 
device_rx_data&nbsp;&nbsp; ),<br>
667 
&nbsp;&nbsp; .device_rx_parity&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (
668 
device_rx_parity ),<br>
669 
<br>
670 
&nbsp;&nbsp;
671 
.ps2_clk&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
672 
(
673 
ps2_clk&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
674 
),<br>
675 
&nbsp;&nbsp;
676 
.ps2_data&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
677 
(
678 
ps2_data&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
679 
)<br>
680 
<br>
681 
);<br>
682 
</code><span style="font-family: monospace;">--------------------------------------------------------------------------------------------------------------------------------------</span><br>
683 
</p>
684 
<p>This file is a verilog code segment that declares all the wires and
685 
regs needed in the sim (except for clk and reset). It then&nbsp;
686 
instantiates the component and all needed models for the simulation.<br>
687 
</p>
688 
<p><br>
689 
</p>
690 
<p><br>
691 
</p>
692 
<p><br>
693 
</p>
694 
<h2><a name="manifesto"></a>test_define<br>
695 
</h2>
696 
<p><span style="font-family: monospace;">--------------------------------------------------------------------------------------------------------------------------------------</span></p>
697 
<p><br>
698 
</p>
699 
<p><span style="font-family: monospace;">initial</span><br
700 
 style="font-family: monospace;">
701 
<span style="font-family: monospace;">begin</span><br
702 
 style="font-family: monospace;">
703 
<span style="font-family: monospace;">&nbsp;`TIMEFORMAT</span><br
704 
 style="font-family: monospace;">
705 
<span style="font-family: monospace;">$display("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
706 
");</span><br style="font-family: monospace;">
707 
<span style="font-family: monospace;">$display("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
708 
===================================================");</span><br
709 
 style="font-family: monospace;">
710 
<span style="font-family: monospace;">$display("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
711 
Test
712 
Start");</span><br style="font-family: monospace;">
713 
<span style="font-family: monospace;">$display("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
714 
===================================================");</span><br
715 
 style="font-family: monospace;">
716 
<span style="font-family: monospace;">$display("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
717 
");</span><br style="font-family: monospace;">
718 
<br style="font-family: monospace;">
719 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
720 
=&nbsp;
721 
1'b0;</span><br style="font-family: monospace;">
722 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
723 
=&nbsp; 8'h00;</span><br style="font-family: monospace;">
724 
<span style="font-family: monospace;">device_ack&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
725 
=&nbsp;
726 
1'b1;</span><br style="font-family: monospace;">
727 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
728 
=&nbsp; 1'b1;</span><br style="font-family: monospace;">
729 
<span style="font-family: monospace;">device_stop&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
730 
=&nbsp;
731 
1'b1;</span><br style="font-family: monospace;">
732 
<br style="font-family: monospace;">
733 
<br style="font-family: monospace;">
734 
<br style="font-family: monospace;">
735 
<span style="font-family: monospace;">cg.next(20);</span><br
736 
 style="font-family: monospace;">
737 
<span style="font-family: monospace;">cg.reset_off;</span><br
738 
 style="font-family: monospace;">
739 
<br style="font-family: monospace;">
740 
<span style="font-family: monospace;">while (device_rx_read == 1'b0 )
741 
cg.next(1);</span><br style="font-family: monospace;">
742 
<span style="font-family: monospace;">cg.next(2000);</span><br
743 
 style="font-family: monospace;">
744 
<br style="font-family: monospace;">
745 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
746 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
747 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
748 
=&nbsp; 8'hfa;</span><br style="font-family: monospace;">
749 
<span style="font-family: monospace;">cg.next(1);</span><br
750 
 style="font-family: monospace;">
751 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
752 
=&nbsp;
753 
1'b1;</span><br style="font-family: monospace;">
754 
<span style="font-family: monospace;">cg.next(1);</span><br
755 
 style="font-family: monospace;">
756 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
757 
=&nbsp;
758 
1'b0;</span><br style="font-family: monospace;">
759 
<br style="font-family: monospace;">
760 
<br style="font-family: monospace;">
761 
<br style="font-family: monospace;">
762 
<br style="font-family: monospace;">
763 
<span style="font-family: monospace;">cg.next(20000);</span><br
764 
 style="font-family: monospace;">
765 
<br style="font-family: monospace;">
766 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
767 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
768 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
769 
=&nbsp; 8'haa;</span><br style="font-family: monospace;">
770 
<span style="font-family: monospace;">cg.next(1);</span><br
771 
 style="font-family: monospace;">
772 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
773 
=&nbsp;
774 
1'b1;</span><br style="font-family: monospace;">
775 
<span style="font-family: monospace;">cg.next(1);</span><br
776 
 style="font-family: monospace;">
777 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
778 
=&nbsp;
779 
1'b0;</span><br style="font-family: monospace;">
780 
<br style="font-family: monospace;">
781 
<br style="font-family: monospace;">
782 
<br style="font-family: monospace;">
783 
<br style="font-family: monospace;">
784 
<br style="font-family: monospace;">
785 
<br style="font-family: monospace;">
786 
<span style="font-family: monospace;">cg.next(20000);</span><br
787 
 style="font-family: monospace;">
788 
<br style="font-family: monospace;">
789 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
790 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
791 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
792 
=&nbsp; 8'h00;</span><br style="font-family: monospace;">
793 
<span style="font-family: monospace;">cg.next(1);</span><br
794 
 style="font-family: monospace;">
795 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
796 
=&nbsp;
797 
1'b1;</span><br style="font-family: monospace;">
798 
<span style="font-family: monospace;">cg.next(1);</span><br
799 
 style="font-family: monospace;">
800 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
801 
=&nbsp;
802 
1'b0;</span><br style="font-family: monospace;">
803 
<br style="font-family: monospace;">
804 
<br style="font-family: monospace;">
805 
<br style="font-family: monospace;">
806 
<br style="font-family: monospace;">
807 
<span style="font-family: monospace;">while (device_rx_read == 1'b0 )
808 
cg.next(1);</span><br style="font-family: monospace;">
809 
<span style="font-family: monospace;">cg.next(2000);</span><br
810 
 style="font-family: monospace;">
811 
<br style="font-family: monospace;">
812 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
813 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
814 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
815 
=&nbsp; 8'hfa;</span><br style="font-family: monospace;">
816 
<span style="font-family: monospace;">cg.next(1);</span><br
817 
 style="font-family: monospace;">
818 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
819 
=&nbsp;
820 
1'b1;</span><br style="font-family: monospace;">
821 
<span style="font-family: monospace;">cg.next(1);</span><br
822 
 style="font-family: monospace;">
823 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
824 
=&nbsp;
825 
1'b0;</span><br style="font-family: monospace;">
826 
<br style="font-family: monospace;">
827 
<br style="font-family: monospace;">
828 
<br style="font-family: monospace;">
829 
<br style="font-family: monospace;">
830 
<span style="font-family: monospace;">while (device_rx_read == 1'b0 )
831 
cg.next(1);</span><br style="font-family: monospace;">
832 
<span style="font-family: monospace;">cg.next(2000);</span><br
833 
 style="font-family: monospace;">
834 
<br style="font-family: monospace;">
835 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
836 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
837 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
838 
=&nbsp; 8'hfa;</span><br style="font-family: monospace;">
839 
<span style="font-family: monospace;">cg.next(1);</span><br
840 
 style="font-family: monospace;">
841 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
842 
=&nbsp;
843 
1'b1;</span><br style="font-family: monospace;">
844 
<span style="font-family: monospace;">cg.next(1);</span><br
845 
 style="font-family: monospace;">
846 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
847 
=&nbsp;
848 
1'b0;</span><br style="font-family: monospace;">
849 
<br style="font-family: monospace;">
850 
<br style="font-family: monospace;">
851 
<br style="font-family: monospace;">
852 
<br style="font-family: monospace;">
853 
<span style="font-family: monospace;">while (device_rx_read == 1'b0 )
854 
cg.next(1);</span><br style="font-family: monospace;">
855 
<span style="font-family: monospace;">cg.next(2000);</span><br
856 
 style="font-family: monospace;">
857 
<br style="font-family: monospace;">
858 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
859 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
860 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
861 
=&nbsp; 8'hfa;</span><br style="font-family: monospace;">
862 
<span style="font-family: monospace;">cg.next(1);</span><br
863 
 style="font-family: monospace;">
864 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
865 
=&nbsp;
866 
1'b1;</span><br style="font-family: monospace;">
867 
<span style="font-family: monospace;">cg.next(1);</span><br
868 
 style="font-family: monospace;">
869 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
870 
=&nbsp;
871 
1'b0;</span><br style="font-family: monospace;">
872 
<br style="font-family: monospace;">
873 
<br style="font-family: monospace;">
874 
<br style="font-family: monospace;">
875 
<br style="font-family: monospace;">
876 
<span style="font-family: monospace;">while (device_rx_read == 1'b0 )
877 
cg.next(1);</span><br style="font-family: monospace;">
878 
<span style="font-family: monospace;">cg.next(2000);</span><br
879 
 style="font-family: monospace;">
880 
<br style="font-family: monospace;">
881 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
882 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
883 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
884 
=&nbsp; 8'hfa;</span><br style="font-family: monospace;">
885 
<span style="font-family: monospace;">cg.next(1);</span><br
886 
 style="font-family: monospace;">
887 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
888 
=&nbsp;
889 
1'b1;</span><br style="font-family: monospace;">
890 
<span style="font-family: monospace;">cg.next(1);</span><br
891 
 style="font-family: monospace;">
892 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
893 
=&nbsp;
894 
1'b0;</span><br style="font-family: monospace;">
895 
<br style="font-family: monospace;">
896 
<br style="font-family: monospace;">
897 
<br style="font-family: monospace;">
898 
<span style="font-family: monospace;">while (device_rx_read == 1'b0 )
899 
cg.next(1);</span><br style="font-family: monospace;">
900 
<span style="font-family: monospace;">cg.next(2000);</span><br
901 
 style="font-family: monospace;">
902 
<br style="font-family: monospace;">
903 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
904 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
905 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
906 
=&nbsp; 8'hfa;</span><br style="font-family: monospace;">
907 
<span style="font-family: monospace;">cg.next(1);</span><br
908 
 style="font-family: monospace;">
909 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
910 
=&nbsp;
911 
1'b1;</span><br style="font-family: monospace;">
912 
<span style="font-family: monospace;">cg.next(1);</span><br
913 
 style="font-family: monospace;">
914 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
915 
=&nbsp;
916 
1'b0;</span><br style="font-family: monospace;">
917 
<br style="font-family: monospace;">
918 
<br style="font-family: monospace;">
919 
<br style="font-family: monospace;">
920 
<span style="font-family: monospace;">while (device_rx_read == 1'b0 )
921 
cg.next(1);</span><br style="font-family: monospace;">
922 
<span style="font-family: monospace;">cg.next(2000);</span><br
923 
 style="font-family: monospace;">
924 
<br style="font-family: monospace;">
925 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
926 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
927 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
928 
=&nbsp; 8'hfa;</span><br style="font-family: monospace;">
929 
<span style="font-family: monospace;">cg.next(1);</span><br
930 
 style="font-family: monospace;">
931 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
932 
=&nbsp;
933 
1'b1;</span><br style="font-family: monospace;">
934 
<span style="font-family: monospace;">cg.next(1);</span><br
935 
 style="font-family: monospace;">
936 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
937 
=&nbsp;
938 
1'b0;</span><br style="font-family: monospace;">
939 
<br style="font-family: monospace;">
940 
<br style="font-family: monospace;">
941 
<br style="font-family: monospace;">
942 
<span style="font-family: monospace;">while (device_rx_read == 1'b0 )
943 
cg.next(1);</span><br style="font-family: monospace;">
944 
<span style="font-family: monospace;">cg.next(2000);</span><br
945 
 style="font-family: monospace;">
946 
<br style="font-family: monospace;">
947 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
948 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
949 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
950 
=&nbsp; 8'hfa;</span><br style="font-family: monospace;">
951 
<span style="font-family: monospace;">cg.next(1);</span><br
952 
 style="font-family: monospace;">
953 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
954 
=&nbsp;
955 
1'b1;</span><br style="font-family: monospace;">
956 
<span style="font-family: monospace;">cg.next(1);</span><br
957 
 style="font-family: monospace;">
958 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
959 
=&nbsp;
960 
1'b0;</span><br style="font-family: monospace;">
961 
<br style="font-family: monospace;">
962 
<br style="font-family: monospace;">
963 
<br style="font-family: monospace;">
964 
<br style="font-family: monospace;">
965 
<br style="font-family: monospace;">
966 
<span style="font-family: monospace;">cg.next(20000);</span><br
967 
 style="font-family: monospace;">
968 
<br style="font-family: monospace;">
969 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
970 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
971 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
972 
=&nbsp; 8'h03;</span><br style="font-family: monospace;">
973 
<span style="font-family: monospace;">cg.next(1);</span><br
974 
 style="font-family: monospace;">
975 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
976 
=&nbsp;
977 
1'b1;</span><br style="font-family: monospace;">
978 
<span style="font-family: monospace;">cg.next(1);</span><br
979 
 style="font-family: monospace;">
980 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
981 
=&nbsp;
982 
1'b0;</span><br style="font-family: monospace;">
983 
<br style="font-family: monospace;">
984 
<br style="font-family: monospace;">
985 
<br style="font-family: monospace;">
986 
<br style="font-family: monospace;">
987 
<br style="font-family: monospace;">
988 
<span style="font-family: monospace;">while (device_rx_read == 1'b0 )
989 
cg.next(1);</span><br style="font-family: monospace;">
990 
<span style="font-family: monospace;">cg.next(2000);</span><br
991 
 style="font-family: monospace;">
992 
<br style="font-family: monospace;">
993 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
994 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
995 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
996 
=&nbsp; 8'hfa;</span><br style="font-family: monospace;">
997 
<span style="font-family: monospace;">cg.next(1);</span><br
998 
 style="font-family: monospace;">
999 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1000 
=&nbsp;
1001 
1'b1;</span><br style="font-family: monospace;">
1002 
<span style="font-family: monospace;">cg.next(1);</span><br
1003 
 style="font-family: monospace;">
1004 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1005 
=&nbsp;
1006 
1'b0;</span><br style="font-family: monospace;">
1007 
<br style="font-family: monospace;">
1008 
<br style="font-family: monospace;">
1009 
<br style="font-family: monospace;">
1010 
<span style="font-family: monospace;">while (device_rx_read == 1'b0 )
1011 
cg.next(1);</span><br style="font-family: monospace;">
1012 
<span style="font-family: monospace;">cg.next(2000);</span><br
1013 
 style="font-family: monospace;">
1014 
<br style="font-family: monospace;">
1015 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
1016 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
1017 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
1018 
=&nbsp; 8'hfa;</span><br style="font-family: monospace;">
1019 
<span style="font-family: monospace;">cg.next(1);</span><br
1020 
 style="font-family: monospace;">
1021 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1022 
=&nbsp;
1023 
1'b1;</span><br style="font-family: monospace;">
1024 
<span style="font-family: monospace;">cg.next(1);</span><br
1025 
 style="font-family: monospace;">
1026 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1027 
=&nbsp;
1028 
1'b0;</span><br style="font-family: monospace;">
1029 
<br style="font-family: monospace;">
1030 
<br style="font-family: monospace;">
1031 
<br style="font-family: monospace;">
1032 
<br style="font-family: monospace;">
1033 
<span style="font-family: monospace;">while (device_rx_read == 1'b0 )
1034 
cg.next(1);</span><br style="font-family: monospace;">
1035 
<span style="font-family: monospace;">cg.next(2000);</span><br
1036 
 style="font-family: monospace;">
1037 
<br style="font-family: monospace;">
1038 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
1039 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
1040 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
1041 
=&nbsp; 8'hfa;</span><br style="font-family: monospace;">
1042 
<span style="font-family: monospace;">cg.next(1);</span><br
1043 
 style="font-family: monospace;">
1044 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1045 
=&nbsp;
1046 
1'b1;</span><br style="font-family: monospace;">
1047 
<span style="font-family: monospace;">cg.next(1);</span><br
1048 
 style="font-family: monospace;">
1049 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1050 
=&nbsp;
1051 
1'b0;</span><br style="font-family: monospace;">
1052 
<br style="font-family: monospace;">
1053 
<br style="font-family: monospace;">
1054 
<br style="font-family: monospace;">
1055 
<span style="font-family: monospace;">while (device_rx_read == 1'b0 )
1056 
cg.next(1);</span><br style="font-family: monospace;">
1057 
<span style="font-family: monospace;">cg.next(2000);</span><br
1058 
 style="font-family: monospace;">
1059 
<br style="font-family: monospace;">
1060 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
1061 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
1062 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
1063 
=&nbsp; 8'hfa;</span><br style="font-family: monospace;">
1064 
<span style="font-family: monospace;">cg.next(1);</span><br
1065 
 style="font-family: monospace;">
1066 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1067 
=&nbsp;
1068 
1'b1;</span><br style="font-family: monospace;">
1069 
<span style="font-family: monospace;">cg.next(1);</span><br
1070 
 style="font-family: monospace;">
1071 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1072 
=&nbsp;
1073 
1'b0;</span><br style="font-family: monospace;">
1074 
<br style="font-family: monospace;">
1075 
<br style="font-family: monospace;">
1076 
<br style="font-family: monospace;">
1077 
<br style="font-family: monospace;">
1078 
<span style="font-family: monospace;">while (device_rx_read == 1'b0 )
1079 
cg.next(1);</span><br style="font-family: monospace;">
1080 
<span style="font-family: monospace;">cg.next(2000);</span><br
1081 
 style="font-family: monospace;">
1082 
<br style="font-family: monospace;">
1083 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
1084 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
1085 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
1086 
=&nbsp; 8'hfa;</span><br style="font-family: monospace;">
1087 
<span style="font-family: monospace;">cg.next(1);</span><br
1088 
 style="font-family: monospace;">
1089 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1090 
=&nbsp;
1091 
1'b1;</span><br style="font-family: monospace;">
1092 
<span style="font-family: monospace;">cg.next(1);</span><br
1093 
 style="font-family: monospace;">
1094 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1095 
=&nbsp;
1096 
1'b0;</span><br style="font-family: monospace;">
1097 
<br style="font-family: monospace;">
1098 
<br style="font-family: monospace;">
1099 
<br style="font-family: monospace;">
1100 
<br style="font-family: monospace;">
1101 
<br style="font-family: monospace;">
1102 
<br style="font-family: monospace;">
1103 
<span style="font-family: monospace;">cg.next(20000);</span><br
1104 
 style="font-family: monospace;">
1105 
<br style="font-family: monospace;">
1106 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
1107 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
1108 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
1109 
=&nbsp; 8'h12;</span><br style="font-family: monospace;">
1110 
<span style="font-family: monospace;">cg.next(1);</span><br
1111 
 style="font-family: monospace;">
1112 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1113 
=&nbsp;
1114 
1'b1;</span><br style="font-family: monospace;">
1115 
<span style="font-family: monospace;">cg.next(1);</span><br
1116 
 style="font-family: monospace;">
1117 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1118 
=&nbsp;
1119 
1'b0;</span><br style="font-family: monospace;">
1120 
<br style="font-family: monospace;">
1121 
<br style="font-family: monospace;">
1122 
<br style="font-family: monospace;">
1123 
<span style="font-family: monospace;">cg.next(20000);</span><br
1124 
 style="font-family: monospace;">
1125 
<br style="font-family: monospace;">
1126 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
1127 
=&nbsp; 1'b1;</span><br style="font-family: monospace;">
1128 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
1129 
=&nbsp; 8'h34;</span><br style="font-family: monospace;">
1130 
<span style="font-family: monospace;">cg.next(1);</span><br
1131 
 style="font-family: monospace;">
1132 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1133 
=&nbsp;
1134 
1'b1;</span><br style="font-family: monospace;">
1135 
<span style="font-family: monospace;">cg.next(1);</span><br
1136 
 style="font-family: monospace;">
1137 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1138 
=&nbsp;
1139 
1'b0;</span><br style="font-family: monospace;">
1140 
<br style="font-family: monospace;">
1141 
<br style="font-family: monospace;">
1142 
<br style="font-family: monospace;">
1143 
<span style="font-family: monospace;">cg.next(20000);</span><br
1144 
 style="font-family: monospace;">
1145 
<br style="font-family: monospace;">
1146 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
1147 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
1148 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
1149 
=&nbsp; 8'h56;</span><br style="font-family: monospace;">
1150 
<span style="font-family: monospace;">cg.next(1);</span><br
1151 
 style="font-family: monospace;">
1152 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1153 
=&nbsp;
1154 
1'b1;</span><br style="font-family: monospace;">
1155 
<span style="font-family: monospace;">cg.next(1);</span><br
1156 
 style="font-family: monospace;">
1157 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1158 
=&nbsp;
1159 
1'b0;</span><br style="font-family: monospace;">
1160 
<br style="font-family: monospace;">
1161 
<br style="font-family: monospace;">
1162 
<br style="font-family: monospace;">
1163 
<br style="font-family: monospace;">
1164 
<br style="font-family: monospace;">
1165 
<br style="font-family: monospace;">
1166 
<br style="font-family: monospace;">
1167 
<br style="font-family: monospace;">
1168 
<span style="font-family: monospace;">cg.next(20000);</span><br
1169 
 style="font-family: monospace;">
1170 
<br style="font-family: monospace;">
1171 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
1172 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
1173 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
1174 
=&nbsp; 8'h78;</span><br style="font-family: monospace;">
1175 
<span style="font-family: monospace;">cg.next(1);</span><br
1176 
 style="font-family: monospace;">
1177 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1178 
=&nbsp;
1179 
1'b1;</span><br style="font-family: monospace;">
1180 
<span style="font-family: monospace;">cg.next(1);</span><br
1181 
 style="font-family: monospace;">
1182 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1183 
=&nbsp;
1184 
1'b0;</span><br style="font-family: monospace;">
1185 
<br style="font-family: monospace;">
1186 
<br style="font-family: monospace;">
1187 
<br style="font-family: monospace;">
1188 
<span style="font-family: monospace;">cg.next(20000);</span><br
1189 
 style="font-family: monospace;">
1190 
<br style="font-family: monospace;">
1191 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
1192 
=&nbsp; 1'b0;</span><br style="font-family: monospace;">
1193 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
1194 
=&nbsp; 8'h9a;</span><br style="font-family: monospace;">
1195 
<span style="font-family: monospace;">cg.next(1);</span><br
1196 
 style="font-family: monospace;">
1197 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1198 
=&nbsp;
1199 
1'b1;</span><br style="font-family: monospace;">
1200 
<span style="font-family: monospace;">cg.next(1);</span><br
1201 
 style="font-family: monospace;">
1202 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1203 
=&nbsp;
1204 
1'b0;</span><br style="font-family: monospace;">
1205 
<br style="font-family: monospace;">
1206 
<br style="font-family: monospace;">
1207 
<br style="font-family: monospace;">
1208 
<span style="font-family: monospace;">cg.next(20000);</span><br
1209 
 style="font-family: monospace;">
1210 
<br style="font-family: monospace;">
1211 
<span style="font-family: monospace;">device_parity&nbsp;&nbsp;&nbsp;
1212 
=&nbsp; 1'b1;</span><br style="font-family: monospace;">
1213 
<span style="font-family: monospace;">device_tx_data&nbsp;&nbsp;
1214 
=&nbsp; 8'hbc;</span><br style="font-family: monospace;">
1215 
<span style="font-family: monospace;">cg.next(1);</span><br
1216 
 style="font-family: monospace;">
1217 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1218 
=&nbsp;
1219 
1'b1;</span><br style="font-family: monospace;">
1220 
<span style="font-family: monospace;">cg.next(1);</span><br
1221 
 style="font-family: monospace;">
1222 
<span style="font-family: monospace;">device_write&nbsp;&nbsp;&nbsp;&nbsp;
1223 
=&nbsp;
1224 
1'b0;</span><br style="font-family: monospace;">
1225 
<br style="font-family: monospace;">
1226 
<br style="font-family: monospace;">
1227 
<br style="font-family: monospace;">
1228 
<br style="font-family: monospace;">
1229 
<br style="font-family: monospace;">
1230 
<br style="font-family: monospace;">
1231 
<span style="font-family: monospace;">cg.next(20000);</span><br
1232 
 style="font-family: monospace;">
1233 
<br style="font-family: monospace;">
1234 
<br style="font-family: monospace;">
1235 
<br style="font-family: monospace;">
1236 
<span style="font-family: monospace;">$display("%t&nbsp;&nbsp;&nbsp;
1237 
Test&nbsp; PASSED",$realtime);</span><br style="font-family: monospace;">
1238 
<span style="font-family: monospace;">$finish;</span><br
1239 
 style="font-family: monospace;">
1240 
<span style="font-family: monospace;">end</span><br
1241 
 style="font-family: monospace;">
1242 
<br style="font-family: monospace;">
1243 
<br>
1244 
</p>
1245 
<p><br>
1246 
</p>
1247 
<p><br>
1248 
<span style="font-family: monospace;">--------------------------------------------------------------------------------------------------------------------------------------</span><br>
1249 
</p>
1250 
<p><br>
1251 
</p>
1252 
<h2><a name="manifesto"></a>dmp_define<br>
1253 
</h2>
1254 
<p style="font-family: monospace;">--------------------------------------------------------------------------------------------------------------------------------------<br>
1255 
</p>
1256 
<p style="font-family: monospace;">$dumpfile ("TestBench.vcd");<br>
1257 
$dumpvars (0, TB);<br>
1258 
--------------------------------------------------------------------------------------------------------------------------------------<br>
1259 
<br>
1260 
</p>
1261 
<p><br>
1262 
<br>
1263 
</p>
1264 
<p><br>
1265 
<br>
1266 
</p>
1267 
<p><br>
1268 
<br>
1269 
</p>
1270 
<p><br>
1271 
</p>
1272 
<p><br>
1273 
</p>
1274 
<p><br>
1275 
</p>
1276 
<p>This is a test<br>
1277 
</p>
1278 
<p><br>
1279 
&nbsp;<br>
1280 
</p>
1281 
<p><br>
1282 
<br>
1283 
</p>
1284 
<p><br>
1285 
<br>
1286 
</p>
1287 
<p><br>
1288 
<br>
1289 
</p>
1290 
<p><br>
1291 
<br>
1292 
</p>
1293 
<p><br>
1294 
<br>
1295 
</p>
1296 
</body>
1297 
</html>

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