adder_sub.cpp revision 12855:588919e0e4aa 
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20/*****************************************************************************
21
22  adder_sub.cpp --
23
24  Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15
25
26 *****************************************************************************/
27
28/*****************************************************************************
29
30  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
31  changes you are making here.
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33      Name, Affiliation, Date:
34  Description of Modification:
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36 *****************************************************************************/
37
38/* Filename adder_sub.cc */
39/* This is the implementation file for synchronous process `adder_sub' */
40
41#include "adder_sub.h"
42
43int add(int a, int b)
44{
45  return (a + b);
46}
47
48void adder_sub::entry()
49{
50  int sum;
51  int a, b, c, d;
52
53  while (true) {
54    // Wait until you get signal to go
55    do { wait(); } while (adder_sub_ready != true);
56    // Read inputs
57    a = Sa.read();
58    b = Sb.read();
59    c = Sc.read();
60
61    // Perform the computation.
62    sum = add(a, b);
63    sum = add(sum, c);
64    d = a - b;
65
66    // Write outputs
67    adder_sub_done.write(true);
68    Ssum.write(sum);
69    Sd.write(d);
70    wait();
71    adder_sub_done.write(false);
72    // Loop back to do { wait(); } while .
73  }
74
75} // end of entry function
76
77