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89 lines
3.4 KiB
C++
89 lines
3.4 KiB
C++
#pragma once
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#include <cereal/cereal.hpp>
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#include <cereal/access.hpp>
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#include <cereal/types/polymorphic.hpp>
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#include <cereal/types/string.hpp>
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#include "Common/Options.hpp"
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#include "Common/Types/Memory/ArrayByteMemory.hpp"
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/// EERegisters_t defines SPECIAL EE registers specified in the EE Users Manual from page 21 to 25.
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/// Special registers here mean anything that does not act as an ordinary storage such as SizedWordRegister.
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/// Some are implemented from the base Memory_t class, as they are not well documented.
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/// The SIO (serial I/O), which is somewhat undocumented. Some information can be found in the Toshiba Tx79 architecture manual (similar to the EE), but even then information is lacking.
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/// Some useful information can be found in the old PCSX2 under Hw.h (register names). It requires some special functionality (see below).
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/// In a real PS2, you can communicate with the EE over this serial port.
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/// Allocated at base PS2 physical memory address 0x1000F100.
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/// This is different from the PSX / IOP SIO.
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class EeRegister_Sio : public ArrayByteMemory
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{
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public:
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EeRegister_Sio();
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static constexpr uptr PADDRESS_EE_REGISTER_SIO = 0x1000F100;
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static constexpr size_t SIZE_EE_REGISTER_SIO = 0x00000100;
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static constexpr size_t OFFSET_SIO_ISR = 0x30; // Actual address 0x1000F130.
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static constexpr size_t OFFSET_SIO_TXFIFO = 0x80; // Actual address 0x1000F180.
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void write_ubyte(const size_t offset, const ubyte value) override;
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uword read_uword(const size_t offset) override;
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void write_uword(const size_t offset, const uword value) override;
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private:
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#if DEBUG_LOG_SIO_MESSAGES
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// Varibles below needed for SIO messages output through the SIO_TXFIFO register.
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static constexpr const char* SIO_BUFFER_PREFIX = "EE SIO Message";
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std::string sio_buffer;
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#endif
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public:
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template<class Archive>
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void serialize(Archive & archive)
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{
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archive(
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cereal::base_class<ArrayByteMemory>(this)
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#if DEBUG_LOG_SIO_MESSAGES
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,CEREAL_NVP(sio_buffer)
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#endif
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);
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}
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};
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/// The MCH register class. No information available except for old PCSX2's code.
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/// Related to the RDRAM memory controller.
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/// It requires some special functionality (see below).
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/// Allocated at base PS2 physical memory address 0x1000F430 (from MCH_RICM).
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class EeRegister_Mch : public ArrayByteMemory
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{
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public:
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EeRegister_Mch();
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static constexpr uptr PADDRESS_EE_REGISTER_MCH = 0x1000F430;
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static constexpr size_t SIZE_EE_REGISTER_MCH = 0x00000020;
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static constexpr size_t OFFSET_MCH_RICM = 0x00; // Actual address 0x1000F430.
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static constexpr size_t OFFSET_MCH_DRD = 0x10; // Actual address 0x1000F440.
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uword read_uword(const size_t offset) override;
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void write_uword(const size_t offset, const uword value) override;
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private:
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// Variables below needed by logic. Used by the BIOS to initialize/test the RDRAM. See old PCSX2 code (Hw.h/HwRead.cpp/HwWrite.cpp).
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int rdram_sdevid = 0;
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static constexpr int rdram_devices = 2; // Put 8 for TOOL and 2 for PS2 and PSX.
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public:
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template<class Archive>
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void serialize(Archive & archive)
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{
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archive(
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cereal::base_class<ArrayByteMemory>(this),
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CEREAL_NVP(rdram_sdevid)
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);
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}
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};
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CEREAL_SPECIALIZE_FOR_ALL_ARCHIVES(EeRegister_Sio, cereal::specialization::member_serialize);
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CEREAL_SPECIALIZE_FOR_ALL_ARCHIVES(EeRegister_Mch, cereal::specialization::member_serialize);
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