1/*
2 * Copyright (c) 2004, 2005
3 * The Regents of The University of Michigan
4 * All Rights Reserved
5 *
6 * This code is part of the M5 simulator.
7 *
8 * Permission is granted to use, copy, create derivative works and

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93 void process();
94
95 /** Event description */
96 virtual const char *description() const;
97
98 friend class Counter;
99
100 void setTo(int clocks);
101
102 int clocksLeft();
103 };
104
105 private:
106 std::string _name;
107 const std::string &name() const { return _name; }
108
109 unsigned int num;
110
111 CounterEvent event;
112
113 /** Initial count value */
114 uint16_t initial_count;
115
116 /** Latched count */
117 uint16_t latched_count;
118
119 /** Interrupt period */
120 uint16_t period;
121
122 /** Current mode of operation */

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138 Intel8254Timer *parent;
139
140 public:
141 Counter(Intel8254Timer *p, const std::string &name, unsigned int num);
142
143 /** Latch the current count (if one is not already latched) */
144 void latchCount();
145
146 /** Get the current count for this counter */
147 int currentCount();
148
149 /** Set the read/write mode */
150 void setRW(int rw_val);
151
152 /** Set operational mode */
153 void setMode(int mode_val);
154
155 /** Set count encoding */
156 void setBCD(int bcd_val);

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