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--- intro_example:standard_sim [2025/05/14 18:30] – rajit
+++ intro_example:standard_sim [2025/05/14 18:40] (current) – rajit
@@ Line 1: / Line 1: @@
-====== Standard simulation environments ======
+====== Using standard  environments ======
 Simulating CHP programs often requires creating an environment to inject data into the circuit being tested, and an environment that reads the outputs of the circuit to check their values. ''actsim'' comes with a [[sim:start|simulation library]] that has some common functionality that can be used for this purpose.
@@ Line 47: / Line 47: @@
 [                 140] <t1>  Source 0: Sequence ended.
 [                 140] <t2>  Sink 0: Received value 55 (0x37)
+</code>
+Instead of using a hard-coded set of values in the the test environment, the standard simulation library also provides a mechanism to read values from a file.  Using:
+<code act>
+sim::source_file<32 /* bit-width */,
+/* file ID */,
+                    false /* don't loop file contents */,
+/* source ID */,
+                    false /* turn off verbose logs */>
+            t1(b.I);
+</code>
+instead of a ''source_sequence'', gets the data values from a file ''_infile_.0'' (0 is the file ID).
+<file txt _infile_.0>
+x493
+x29
+x3
+</file>
+The result is:
+<code>
+$ actsim -p test etest.act
+WARNING: source_file<32,0,f,0,f>: substituting chp model (requested prs, not found)
+WARNING: buffer<>: substituting chp model (requested prs, not found)
+WARNING: sink<32,0,t>: substituting chp model (requested prs, not found)
+actsim> cycle
+[                  50] <t2>  Sink 0: Received value 1173 (0x495)
+[                  70] <t2>  Sink 0: Received value 43 (0x2b)
+[                  90] <t2>  Sink 0: Received value 5 (0x5)
+[                 110] <t1>  Source 0: Input file #0 ended.
+[                 110] <t2>  Sink 0: Received value 6 (0x6)
 </code>