mirror of
https://github.com/RetroDECK/Duckstation.git
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b6f871d2b9
* CPU/Recompiler: Use rel32 call where possible for no-args * JitCodeBuffer: Support using preallocated buffer * CPU/Recompiler/AArch64: Use bl instead of blr for short branches * CPU/CodeCache: Allocate recompiler buffer in program space This means we don't need 64-bit moves for every call out of the recompiler. * GTE: Don't store as u16 and load as u32 * CPU/Recompiler: Add methods to emit global load/stores * GTE: Convert class to namespace * CPU/Recompiler: Call GTE functions directly * Settings: Turn into a global variable * GPU: Replace local pointers with global * InterruptController: Turn into a global pointer * System: Replace local pointers with global * Timers: Turn into a global instance * DMA: Turn into a global instance * SPU: Turn into a global instance * CDROM: Turn into a global instance * MDEC: Turn into a global instance * Pad: Turn into a global instance * SIO: Turn into a global instance * CDROM: Move audio FIFO to the heap * CPU/Recompiler: Drop ASMFunctions No longer needed since we have code in the same 4GB window. * CPUCodeCache: Turn class into namespace * Bus: Local pointer -> global pointers * CPU: Turn class into namespace * Bus: Turn into namespace * GTE: Store registers in CPU state struct Allows relative addressing on ARM. * CPU/Recompiler: Align code storage to page size * CPU/Recompiler: Fix relative branches on A64 * HostInterface: Local references to global * System: Turn into a namespace, move events out * Add guard pages * Android: Fix build
101 lines
1.8 KiB
C++
101 lines
1.8 KiB
C++
#pragma once
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#include "common/bitfield.h"
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#include "controller.h"
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#include <array>
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#include <memory>
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#include <string>
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#include <string_view>
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class TimingEvent;
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class MemoryCard final
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{
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public:
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enum : u32
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{
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DATA_SIZE = 128 * 1024, // 1mbit
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SECTOR_SIZE = 128,
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NUM_SECTORS = DATA_SIZE / SECTOR_SIZE
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};
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MemoryCard();
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~MemoryCard();
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static std::unique_ptr<MemoryCard> Create();
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static std::unique_ptr<MemoryCard> Open(std::string_view filename);
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void Reset();
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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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void Format();
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private:
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enum : u32
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{
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// save in three seconds, that should be long enough for everything to finish writing
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SAVE_DELAY_IN_SECONDS = 5,
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SAVE_DELAY_IN_SYSCLK_TICKS = MASTER_CLOCK * SAVE_DELAY_IN_SECONDS,
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};
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union FLAG
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{
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u8 bits;
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BitField<u8, bool, 3, 1> no_write_yet;
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BitField<u8, bool, 2, 1> write_error;
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};
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enum class State : u8
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{
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Idle,
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Command,
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ReadCardID1,
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ReadCardID2,
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ReadAddressMSB,
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ReadAddressLSB,
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ReadACK1,
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ReadACK2,
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ReadConfirmAddressMSB,
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ReadConfirmAddressLSB,
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ReadData,
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ReadChecksum,
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ReadEnd,
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WriteCardID1,
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WriteCardID2,
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WriteAddressMSB,
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WriteAddressLSB,
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WriteData,
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WriteChecksum,
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WriteACK1,
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WriteACK2,
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WriteEnd,
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};
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static u8 ChecksumFrame(const u8* fptr);
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u8* GetSectorPtr(u32 sector);
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bool LoadFromFile();
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bool SaveIfChanged(bool display_osd_message);
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void QueueFileSave();
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std::unique_ptr<TimingEvent> m_save_event;
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State m_state = State::Idle;
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FLAG m_FLAG = {};
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u16 m_address = 0;
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u8 m_sector_offset = 0;
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u8 m_checksum = 0;
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u8 m_last_byte = 0;
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bool m_changed = false;
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std::array<u8, DATA_SIZE> m_data{};
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std::string m_filename;
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};
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