58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
/*
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* This file is part of the 65816 Emulator Library.
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* Copyright (c) 2018 Francesco Rigoni.
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*
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* https://github.com/FrancescoRigoni/Lib65816
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __SYSTEMBUS__
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#define __SYSTEMBUS__
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#include <stdint.h>
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#include <vector>
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#include "SystemBusDevice.hpp"
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#define PPU_APU_REGS_SIZE 0x200
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#define DSP_SUPERFX_REGS_SIZE 0x1000
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#define OLD_STYLE_JOYPAD_REGS_SIZE 0x100
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#define DMA_PPU2_REGS_SIZE 0x300
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#define CARTRIDGE_SRAM_SIZE 0x2000
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class SystemBus {
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public:
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SystemBus();
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~SystemBus();
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void registerDevice(SystemBusDevice *);
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void storeByte(const Address&, uint8_t);
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void storeTwoBytes(const Address&, uint16_t);
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uint8_t readByte(const Address&);
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uint16_t readTwoBytes(const Address&);
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Address readAddressAt(const Address&);
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private:
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std::vector<SystemBusDevice *> mDevices;
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uint8_t *mPpuApuRegs;
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uint8_t *mDspSuperFxRegs;
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uint8_t *mOldStyleJoypadRegs;
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uint8_t *mDmaPpu2Regs;
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uint8_t *mCartridgeSRam;
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};
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#endif
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