1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
#ifndef DRAM_H
#define DRAM_H
#include "definitions.h"
#include "storage.h"
#include <functional>
#include <ostream>
// clang-format off
/**
* Ensures address is within the current memory size using a clean wrap.
* @param an address
*/
#define WRAP_ADDRESS(a) \
((a < 0) ? ((a % MEM_WORDS) + MEM_WORDS) % MEM_WORDS : a % MEM_WORDS)
// clang-format on
class Dram : public Storage
{
public:
/**
* Constructor.
* @param The number of clock cycles each access takes.
* @return A new memory object.
*/
Dram(int delay);
~Dram();
int write_word(void *, signed int, int) override;
int write_line(void *, std::array<signed int, LINE_SIZE>, int) override;
int read_word(void *, int, signed int &) override;
int read_line(void *, int, std::array<signed int, LINE_SIZE> &) override;
/**
* TODO This will accept a file at a later date.
*/
void load(std::vector<signed int> program);
private:
int process(void *id, int address, std::function<void(int line, int word)> request_handler) override;
/**
* Given `address`, returns the line and word it is in.
* @param an address
* @param the line (row) `address` is in
* @param the word (column) `address` corresponds to
*/
void get_memory_index(int address, int &line, int &word);
};
#endif /* DRAM_H_INCLUDED */
|
