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Annotation of nono/vm/xpbus.h, revision 1.1

1.1     ! root        1: //
        !             2: // nono
        !             3: // Copyright (C) 2022 nono project
        !             4: // Licensed under nono-license.txt
        !             5: //
        !             6: 
        !             7: //
        !             8: // XP プロセッサの物理バス
        !             9: //
        !            10: 
        !            11: #pragma once
        !            12: 
        !            13: #include "device.h"
        !            14: #include <array>
        !            15: 
        !            16: class SubRAM2Device;
        !            17: class XPRAMDevice;
        !            18: 
        !            19: // XP 外部バス
        !            20: class XPbusDevice : public IOContainerDevice
        !            21: {
        !            22:        using inherited = IOContainerDevice;
        !            23:  public:
        !            24:        XPbusDevice();
        !            25:        ~XPbusDevice() override;
        !            26: 
        !            27:        bool Init() override;
        !            28:        void ResetHard(bool poweron) override;
        !            29: 
        !            30:        // addr はそれぞれアラインされていること。
        !            31:        uint64 Read8(uint32 addr) override;
        !            32:        uint64 Read16(uint32 addr) override;
        !            33:        uint64 Read32(uint32 addr) override;
        !            34:        uint64 Write8(uint32 addr, uint32 data) override;
        !            35:        uint64 Write16(uint32 addr, uint32 data) override;
        !            36:        uint64 Write32(uint32 addr, uint32 data) override;
        !            37:        uint64 Peek8(uint32 addr) override;
        !            38: 
        !            39:        // RAM Control Register (RMCR) を設定/取得
        !            40:        uint32 GetRMCR() const;
        !            41:        void SetRMCR(uint32);
        !            42:        // 内蔵 RAM の先頭番地を取得 (モニタ用)
        !            43:        uint32 GetXPRAMAddr() const { return ram_addr; }
        !            44: 
        !            45:  protected:
        !            46:        IODevice *GetDevice(uint32 addr) const override;
        !            47: 
        !            48:  private:
        !            49:        inline IODevice *SearchDevice(uint32 addr) const;
        !            50: 
        !            51:        // 3port RAM (非共有部)
        !            52:        std::unique_ptr<SubRAM2Device> pSubRAM2 /*{}*/;
        !            53:        // XP 内蔵 512 バイト RAM
        !            54:        std::unique_ptr<XPRAMDevice> pXPRAM /*{}*/;
        !            55: 
        !            56:        // XP 内蔵 512 バイト RAM の位置
        !            57:        uint32 ram_addr {};
        !            58: 
        !            59:        IODevice *subram {};    // 共有 SRAM
        !            60:        IODevice *nopio {};
        !            61: };
        !            62: 
        !            63: // XP 内蔵 RAM
        !            64: class XPRAMDevice : public IODevice
        !            65: {
        !            66:        using inherited = IODevice;
        !            67:  public:
        !            68:        XPRAMDevice();
        !            69:        ~XPRAMDevice() override;
        !            70: 
        !            71:        uint64 Read8(uint32 addr) override;
        !            72:        uint64 Read16(uint32 addr) override;
        !            73:        uint64 Read32(uint32 addr) override;
        !            74:        uint64 Write8(uint32 addr, uint32 data) override;
        !            75:        uint64 Write16(uint32 addr, uint32 data) override;
        !            76:        uint64 Write32(uint32 addr, uint32 data) override;
        !            77:        uint64 Peek8(uint32 addr) override;
        !            78:        uint64 Poke8(uint32 addr, uint32 data) override;
        !            79: 
        !            80:  private:
        !            81:        std::array<uint8, 512> ram {};
        !            82: };
        !            83: 
        !            84: static inline XPbusDevice *GetXPbusDevice() {
        !            85:        return Object::GetObject<XPbusDevice>(OBJ_XPBUS);
        !            86: }

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