1/*****************************************************************************
2
3  Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
4  more contributor license agreements.  See the NOTICE file distributed
5  with this work for additional information regarding copyright ownership.
6  Accellera licenses this file to you under the Apache License, Version 2.0
7  (the "License"); you may not use this file except in compliance with the
8  License.  You may obtain a copy of the License at
9
10    http://www.apache.org/licenses/LICENSE-2.0
11
12  Unless required by applicable law or agreed to in writing, software
13  distributed under the License is distributed on an "AS IS" BASIS,
14  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
15  implied.  See the License for the specific language governing
16  permissions and limitations under the License.
17
18 *****************************************************************************/
19
20/*****************************************************************************
21
22  data_gen.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.
32
33      Name, Affiliation, Date:
34  Description of Modification:
35
36 *****************************************************************************/
37
38#include "common.h"
39#include "add_chain.h"
40
41/******************************************************************************/
42/***************************    data_gen Function        **********************/
43/******************************************************************************/
44
45SC_MODULE( DATA_GEN )
46{
47    SC_HAS_PROCESS( DATA_GEN );
48
49    sc_in_clk clk;
50
51  /*** Input and Output Ports ***/
52  const sc_signal<bool>&       	ready;
53        signal_bool_vector8&   	data;
54        sc_signal<int>&		addr;
55
56  /*** Constructor ***/
57  DATA_GEN (   sc_module_name                	NAME,
58                     sc_clock&            	TICK_N,
59               const sc_signal<bool>&    	READY,
60                     signal_bool_vector8& 	DATA,
61  		     sc_signal<int>&		ADDR   )
62
63    :
64		ready (READY),
65              	data  (DATA),	// 8 bits
66		addr  (ADDR)
67
68    {
69	    clk (TICK_N);
70        SC_CTHREAD( entry, clk.neg() );
71    }
72
73  /*** Call to Process Functionality ***/
74  void entry();
75
76};
77
78void
79DATA_GEN::entry()
80{
81  while(true) {
82
83/**  WAIT FOR POSEDGE OF ready  **/
84
85    do { wait(); } while (ready == 1);		// Posedge ready
86    do { wait(); } while (ready == 0);
87
88/**  CHECK TO SEE IF THE END OF MEMORY HAS BEEN REACHED  **/
89
90    if(addr.read() > LIMIT) { 		// if(addr > LIMIT)
91	break;
92    }
93
94/**  WRITE VALUE OF MEMORY AT CURRENT ADDRESS TO data  **/
95
96    data.write(mem[addr.read()]);	// data = mem[addr]
97
98/**  INCREMENT addr BY 1  **/
99
100    addr.write(addr.read() + 1);   	// addr = addr + 1
101  }
102
103}
104
105void
106f_DATA_GEN (   const char*          NAME,
107                     sc_clock&      TICK,
108               const sc_signal<bool>&     READY,
109                     signal_bool_vector8& DATA,
110                     sc_signal<int>&      ADDR   )
111
112{
113        new DATA_GEN(NAME, TICK, READY, DATA, ADDR);
114}
115
116