conditions.cpp revision 12855:588919e0e4aa 
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3  Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
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10    http://www.apache.org/licenses/LICENSE-2.0
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20/*****************************************************************************
21
22  conditions.cpp --
23
24  Original Author: Rocco Jonack, Synopsys, Inc., 1999-07-22
25
26 *****************************************************************************/
27
28/*****************************************************************************
29
30  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
31  changes you are making here.
32
33      Name, Affiliation, Date:
34  Description of Modification:
35
36 *****************************************************************************/
37
38
39#include "conditions.h"
40
41void conditions::entry(){
42
43  sc_biguint<4>   tmp1;
44  sc_bigint<4>    tmp2;
45  sc_biguint<4>   tmp2a;
46  sc_lv<4>        tmp3;
47  sc_bv<4>        tmp4;
48  int             tmp5;
49  bool cond_tmp;
50
51  // reset_loop
52    if (reset.read() == true) {
53      out_value1.write(0);
54      out_value2.write(0);
55      out_value3.write(0);
56      out_value4.write(0);
57      out_value5.write(0);
58      out_valid.write(false);
59      wait();
60    } else wait();
61
62  //
63  // main loop
64  //
65  while(1) {
66    do { wait(); } while  (in_valid == false);
67
68    //reading inputs
69    tmp1 = in_value1.read();
70    tmp2 = in_value2.read();
71    tmp4 = in_value4.read();
72    tmp5 = in_value5.read();
73
74    // complex condition on variables
75    if ((tmp1==4) && (tmp2<6) || (tmp5+tmp4.to_int()==6)) {
76	out_value1.write(4);
77    } else {
78	out_value1.write(tmp1);
79    };
80    wait();
81
82    // complex conditions on signal reads
83    if ((in_value1.read().to_uint()==4) && (in_value2.read().to_int()<6) ||
84	(in_value4.read().to_int()+in_value5.read()==6)) {
85	out_value2.write(4);
86    } else {
87	out_value2.write(tmp1);
88    };
89    wait();
90
91    //reading inputs
92    tmp1 = in_value1.read();
93    tmp2 = in_value2.read();
94    tmp3 = in_value3.read();
95    tmp4 = in_value4.read();
96    tmp5 = in_value5.read();
97
98    // complex conditions outside the if; does it matter for timing?
99    cond_tmp = (tmp1==4) && (tmp2<6) || (tmp5+tmp4.to_int()==6);
100    if (cond_tmp) {
101	out_value3.write(4);
102    } else {
103	out_value3.write(tmp1);
104    };
105    wait();
106
107    // arithmetic if can only be done when using the same datatypes
108    // therefor the temporary assignment
109    tmp2a = 0;
110    out_value4.write((tmp3.to_int()==4) && (tmp1<6) ||
111		     (tmp5+tmp2.to_int()==6)?tmp2a:tmp1);
112    wait();
113
114    // arithmetic if can only be done when using the same datatypes
115    // therefor the temporary assignment
116    tmp5 = tmp2.to_int();
117    out_value5.write((in_value3.read().to_int()==4) &&
118		     (in_value1.read().to_int()<6) ||
119		     (in_value5.read()+in_value2.read().to_int()==6)?
120		     0:tmp5);
121    out_valid.write(true);
122    wait();
123    out_valid.write(false);
124
125  }
126}
127
128// EOF
129
130