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57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
// SPDX-FileCopyrightText: 2019-2022 Connor McLaughlin <stenzek@gmail.com> and contributors.
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// SPDX-License-Identifier: (GPL-3.0 OR CC-BY-NC-ND-4.0)
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#pragma once
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#include "common/types.h"
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#include "controller.h"
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#include "memory_card.h"
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#include "util/state_wrapper.h"
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#include <array>
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class Multitap final
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{
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public:
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Multitap();
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void Reset();
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void SetEnable(bool enable, u32 base_index);
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ALWAYS_INLINE bool IsEnabled() const { return m_enabled; };
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bool DoState(StateWrapper& sw);
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void ResetTransferState();
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bool Transfer(const u8 data_in, u8* data_out);
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ALWAYS_INLINE bool IsReadingMemoryCard() { return IsEnabled() && m_transfer_state == TransferState::MemoryCard; };
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private:
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ALWAYS_INLINE static constexpr u8 GetMultitapIDByte() { return 0x80; };
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ALWAYS_INLINE static constexpr u8 GetStatusByte() { return 0x5A; };
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bool TransferController(u32 slot, const u8 data_in, u8* data_out) const;
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bool TransferMemoryCard(u32 slot, const u8 data_in, u8* data_out) const;
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enum class TransferState : u8
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{
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Idle,
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MemoryCard,
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ControllerCommand,
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SingleController,
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AllControllers
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};
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TransferState m_transfer_state = TransferState::Idle;
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u8 m_selected_slot = 0;
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u32 m_controller_transfer_step = 0;
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bool m_invalid_transfer_all_command = false;
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bool m_transfer_all_controllers = false;
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bool m_current_controller_done = false;
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std::array<u8, 32> m_transfer_buffer{};
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u32 m_base_index;
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bool m_enabled = false;
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};
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