mirror of https://github.com/PCSX2/pcsx2.git
68 lines
2.4 KiB
C++
68 lines
2.4 KiB
C++
// SPDX-FileCopyrightText: 2002-2023 PCSX2 Dev Team
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// SPDX-License-Identifier: LGPL-3.0+
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#pragma once
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#include "common/Pcsx2Defs.h"
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namespace Ps2MemSize
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{
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static constexpr u32 MainRam = _32mb; // 32 MB main memory.
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static constexpr u32 ExtraRam = _1mb * 96; // 32+96 MB devkit memory.
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static constexpr u32 TotalRam = _1mb * 128;// 128 MB total memory.
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static constexpr u32 Rom = _1mb * 4; // 4 MB main rom
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static constexpr u32 Rom1 = _1mb * 4; // DVD player
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static constexpr u32 Rom2 = 0x00080000; // Chinese rom extension
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static constexpr u32 Hardware = _64kb;
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static constexpr u32 Scratch = _16kb;
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static constexpr u32 IopRam = _1mb * 2; // 2MB main ram on the IOP.
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static constexpr u32 IopHardware = _64kb;
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static constexpr u32 GSregs = 0x00002000; // 8k for the GS registers and stuff.
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extern u32 ExposedRam;
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} // namespace Ps2MemSize
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typedef u8 mem8_t;
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typedef u16 mem16_t;
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typedef u32 mem32_t;
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typedef u64 mem64_t;
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typedef u128 mem128_t;
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struct EEVM_MemoryAllocMess
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{
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u8 Main[Ps2MemSize::MainRam]; // Main memory (hard-wired to 32MB)
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u8 ExtraMemory[Ps2MemSize::ExtraRam]; // Extra memory (32MB up to 128MB => 96MB).
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u8 Scratch[Ps2MemSize::Scratch]; // Scratchpad!
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u8 ROM[Ps2MemSize::Rom]; // Boot rom (4MB)
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u8 ROM1[Ps2MemSize::Rom1]; // DVD player (4MB)
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u8 ROM2[Ps2MemSize::Rom2]; // Chinese extensions
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// Two 1 megabyte (max DMA) buffers for reading and writing to high memory (>32MB).
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// Such accesses are not documented as causing bus errors but as the memory does
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// not exist, reads should continue to return 0 and writes should be discarded.
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// Probably.
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u8 ZeroRead[_1mb];
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u8 ZeroWrite[_1mb];
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};
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struct IopVM_MemoryAllocMess
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{
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u8 Main[Ps2MemSize::IopRam]; // Main memory (hard-wired to 2MB)
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u8 P[_64kb]; // I really have no idea what this is... --air
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u8 Sif[0x100]; // a few special SIF/SBUS registers (likely not needed)
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};
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// DevNote: EE and IOP hardware registers are done as a static array instead of a pointer in
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// order to allow for simpler macros and reference handles to be defined (we can safely use
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// compile-time references to registers instead of having to use instance variables).
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alignas(__pagealignsize) extern u8 eeHw[Ps2MemSize::Hardware];
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alignas(__pagealignsize) extern u8 iopHw[Ps2MemSize::IopHardware];
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extern EEVM_MemoryAllocMess* eeMem;
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extern IopVM_MemoryAllocMess* iopMem;
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