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Annotation of nono/vm/subram.h, revision 1.1.1.1

1.1       root        1: //
                      2: // nono
                      3: // Copyright (C) 2020 nono project
                      4: // Licensed under nono-license.txt
                      5: //
                      6: 
                      7: //
                      8: // サブメモリ
                      9: //
                     10: 
                     11: #pragma once
                     12: 
                     13: #include "device.h"
                     14: 
                     15: // サブメモリ (基本クラス)
                     16: class SubRAMBaseDevice : public IODevice
                     17: {
                     18:        using inherited = IODevice;
                     19:  public:
                     20:        SubRAMBaseDevice(int objid_, uint ramsize_kb);
                     21:        virtual ~SubRAMBaseDevice() override;
                     22: 
                     23:        void ResetHard(bool poweron) override;
                     24: 
                     25:        uint64 Read8(uint32 addr) override;
                     26:        uint64 Read16(uint32 addr) override;
                     27:        uint64 Read32(uint32 addr) override;
                     28:        uint64 Write8(uint32 addr, uint32 data) override;
                     29:        uint64 Write16(uint32 addr, uint32 data) override;
                     30:        uint64 Write32(uint32 addr, uint32 data) override;
                     31:        uint64 Peek8(uint32 addr) override;
                     32:        uint64 Poke8(uint32 addr, uint32 data) override;
                     33: 
                     34:  private:
                     35:        // アドレスデコーダ
                     36:        uint64 Decoder(uint32 addr) const;
                     37: 
                     38:        std::unique_ptr<uint8[]> ram {};
                     39:        uint ramsize {};
                     40: };
                     41: 
                     42: // サブメモリ (XP/Lance との共有 RAM)
                     43: class SubRAMDevice : public SubRAMBaseDevice
                     44: {
                     45:        using inherited = SubRAMBaseDevice;
                     46:  public:
                     47:        SubRAMDevice(int ramsize_kb);
                     48:        ~SubRAMDevice() override;
                     49: 
                     50:        void ResetHard(bool poweron) override;
                     51: };
                     52: 
                     53: // サブメモリ2 (XP の非共有部)
                     54: class SubRAM2Device : public SubRAMBaseDevice
                     55: {
                     56:        using inherited = SubRAMBaseDevice;
                     57:  public:
                     58:        SubRAM2Device(int ramsize_kb);
                     59:        ~SubRAM2Device() override;
                     60: };
                     61: 
                     62: static inline SubRAMDevice *GetSubRAMDevice() {
                     63:        return Object::GetObject<SubRAMDevice>(OBJ_SUBRAM);
                     64: }

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