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// Memory subsystem for the RISC-V[ECTOR] mini-ISA
// Copyright (C) 2025 Siddarth Suresh
// Copyright (C) 2025 bdunahu
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
#ifndef DRAM_H
#define DRAM_H
#include "definitions.h"
#include "storage.h"
#include <functional>
#include <ostream>
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 */
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