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62 lines
1.3 KiB
C++
62 lines
1.3 KiB
C++
//
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// MassStorageDevice.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 21/08/2019.
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// Copyright © 2019 Thomas Harte. All rights reserved.
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//
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#ifndef MassStorageDevice_hpp
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#define MassStorageDevice_hpp
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#include <cstddef>
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#include <cstdint>
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#include <vector>
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namespace Storage {
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namespace MassStorage {
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/*!
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A mass storage device is usually:
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* large;
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* fixed; and
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* part of a class with a very wide array of potential speeds and timings.
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Within this emulator, mass storage devices don't attempt to emulate
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any specific medium, they just offer block-based access to a
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linearly-addressed store.
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*/
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class MassStorageDevice {
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public:
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virtual ~MassStorageDevice() {}
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/*!
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@returns The size of each individual block.
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*/
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virtual size_t get_block_size() = 0;
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/*!
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Block addresses run from 0 to n. The total number of blocks, n,
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therefore provides the range of valid addresses.
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@returns The total number of blocks on the device.
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*/
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virtual size_t get_number_of_blocks() = 0;
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/*!
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@returns The current contents of the block at @c address.
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*/
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virtual std::vector<uint8_t> get_block(size_t address) = 0;
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/*!
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Sets new contents for the block at @c address.
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*/
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virtual void set_block([[maybe_unused]] size_t address, const std::vector<uint8_t> &) {}
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};
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}
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}
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#endif /* MassStorageDevice_hpp */
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