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Annotation of nono/vm/xpbus.h, revision 1.1.1.6

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: 
1.1.1.2   root       13: #include "mainbus.h"
1.1       root       14: #include <array>
                     15: 
1.1.1.5   root       16: class NopIODevice;
1.1.1.3   root       17: class SubRAMDevice;
1.1       root       18: class SubRAM2Device;
                     19: class XPRAMDevice;
                     20: 
1.1.1.4   root       21: // XP 物理バス
1.1.1.2   root       22: class XPbusDevice : public IODevice
1.1       root       23: {
1.1.1.2   root       24:        using inherited = IODevice;
1.1       root       25:  public:
                     26:        XPbusDevice();
                     27:        ~XPbusDevice() override;
                     28: 
                     29:        bool Init() override;
                     30:        void ResetHard(bool poweron) override;
                     31: 
1.1.1.3   root       32:        busdata Read1(uint32 addr) override;
                     33:        busdata Write1(uint32 addr, uint32 data) override;
                     34:        busdata Peek1(uint32 addr) override;
                     35:        bool Poke1(uint32 addr, uint32 data) override;
1.1       root       36: 
                     37:        // RAM Control Register (RMCR) を設定/取得
                     38:        uint32 GetRMCR() const;
                     39:        void SetRMCR(uint32);
                     40:        // 内蔵 RAM の先頭番地を取得 (モニタ用)
                     41:        uint32 GetXPRAMAddr() const { return ram_addr; }
                     42: 
                     43:  private:
                     44:        inline IODevice *SearchDevice(uint32 addr) const;
                     45: 
                     46:        // 3port RAM (非共有部)
                     47:        std::unique_ptr<SubRAM2Device> pSubRAM2 /*{}*/;
                     48:        // XP 内蔵 512 バイト RAM
                     49:        std::unique_ptr<XPRAMDevice> pXPRAM /*{}*/;
                     50: 
                     51:        // XP 内蔵 512 バイト RAM の位置
                     52:        uint32 ram_addr {};
                     53: 
1.1.1.3   root       54:        SubRAMDevice *subram {};        // 共有 SRAM
                     55:        NopIODevice *nopio {};
1.1       root       56: };
                     57: 
                     58: // XP 内蔵 RAM
                     59: class XPRAMDevice : public IODevice
                     60: {
                     61:        using inherited = IODevice;
                     62:  public:
                     63:        XPRAMDevice();
                     64:        ~XPRAMDevice() override;
                     65: 
1.1.1.3   root       66:        busdata Read1(uint32 addr) override;
                     67:        busdata Write1(uint32 addr, uint32 data) override;
                     68:        busdata Peek1(uint32 addr) override;
                     69:        bool Poke1(uint32 addr, uint32 data) override;
1.1       root       70: 
                     71:  private:
                     72:        std::array<uint8, 512> ram {};
                     73: };
                     74: 
1.1.1.6 ! root       75: inline XPbusDevice *GetXPbusDevice() {
1.1       root       76:        return Object::GetObject<XPbusDevice>(OBJ_XPBUS);
                     77: }

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