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1.1 root 1: //
2: // nono
3: // Copyright (C) 2020 nono project
4: // Licensed under nono-license.txt
5: //
6:
7: //
1.1.1.3 ! root 8: // メインバス (共通部分)
1.1 root 9: //
10:
11: #pragma once
12:
13: #include "device.h"
1.1.1.3 ! root 14: #include "bus.h"
1.1.1.2 root 15: #include "monitor.h"
1.1 root 16: #include <array>
1.1.1.2 root 17: #include <utility>
1.1 root 18:
1.1.1.3 ! root 19: // メインバスの素質を持つクラス
! 20: class MainbusBaseDevice : public IODevice
1.1 root 21: {
1.1.1.3 ! root 22: using inherited = IODevice;
1.1 root 23: public:
1.1.1.3 ! root 24: MainbusBaseDevice(int objid_);
! 25: ~MainbusBaseDevice() override;
1.1 root 26:
1.1.1.3 ! root 27: // メインバスの初期化
! 28: virtual bool InitMainbus() = 0;
1.1 root 29:
1.1.1.3 ! root 30: // MPU からのリセット (ここ?)
! 31: virtual void ResetByMPU();
1.1 root 32:
1.1.1.3 ! root 33: // addr 版 (こっちは呼ばないこと)
! 34: busdata Read8(uint32 addr) override final;
! 35: busdata Read16(uint32 addr) override final;
! 36: busdata Read32(uint32 addr) override final;
! 37: busdata Write8(uint32 addr, uint32 data) override final;
! 38: busdata Write16(uint32 addr, uint32 data) override final;
! 39: busdata Write32(uint32 addr, uint32 data) override final;
! 40:
! 41: // busaddr 版
! 42: virtual busdata Read8(busaddr addr) = 0;
! 43: virtual busdata Read16(busaddr addr) = 0;
! 44: virtual busdata Read32(busaddr addr) = 0;
! 45: virtual busdata Write8(busaddr addr, uint32 data) = 0;
! 46: virtual busdata Write16(busaddr addr, uint32 data) = 0;
! 47: virtual busdata Write32(busaddr addr, uint32 data) = 0;
! 48:
! 49: // ブートページを ROM に切り替える
! 50: void SwitchBootPageToROM() { SwitchBootPage(true); }
! 51: // ブートページを RAM に切り替える
! 52: void SwitchBootPageToRAM() { SwitchBootPage(false); }
1.1 root 53:
1.1.1.3 ! root 54: // モニタ表示用にデバイス名を整形。
1.1.1.2 root 55: static std::pair<std::string, TA> FormatDevName(const Device *dev);
56:
1.1.1.3 ! root 57: protected:
! 58: // ブートページを切り替える (内部用)
! 59: virtual void SwitchBootPage(bool isrom) = 0;
! 60: };
! 61:
! 62: // メインバス (システムに1つ)
! 63: class MainbusDevice : public MainbusBaseDevice
! 64: {
! 65: using inherited = MainbusBaseDevice;
! 66: public:
! 67: // アクセス状況 (詳細は機種ごと)
! 68: static const uint8 ACC_READ = 0x01;
! 69: static const uint8 ACC_WRITE = 0x02;
1.1 root 70:
1.1.1.3 ! root 71: public:
! 72: MainbusDevice(int objid_);
! 73: ~MainbusDevice() override;
1.1 root 74:
1.1.1.3 ! root 75: // ハイパーバイザ的アクセスというか、
! 76: // 今となってはミスアライン可能なアクセスというだけかも知れない。
! 77: busdata HVRead8(uint32 addr);
! 78: busdata HVRead16(uint32 addr);
! 79: busdata HVRead32(uint32 addr);
! 80: busdata HVWrite8(uint32 addr, uint32 data);
! 81: busdata HVWrite16(uint32 addr, uint32 data);
! 82: busdata HVWrite32(uint32 addr, uint32 data);
1.1.1.2 root 83:
1.1.1.3 ! root 84: uint64 Peek32(uint32 addr);
! 85: };
! 86:
! 87: // 上位8ビットがテーブルで表せる構造のメインバス (共通部分)
! 88: class Mainbus24Device : public MainbusDevice
! 89: {
! 90: using inherited = MainbusDevice;
! 91: public:
! 92: Mainbus24Device();
! 93: ~Mainbus24Device() override;
! 94:
! 95: void ResetHard(bool poweron) override;
! 96:
! 97: busdata Read8(busaddr addr) override;
! 98: busdata Read16(busaddr addr) override;
! 99: busdata Read32(busaddr addr) override;
! 100: busdata Write8(busaddr addr, uint32 data) override;
! 101: busdata Write16(busaddr addr, uint32 data) override;
! 102: busdata Write32(busaddr addr, uint32 data) override;
! 103: busdata Peek8(uint32 addr) override;
! 104: bool Poke8(uint32 addr, uint32 data) override;
! 105:
! 106: protected:
1.1.1.2 root 107: DECLARE_MONITOR_CALLBACK(MonitorUpdate);
1.1.1.3 ! root 108: DECLARE_MONITOR_CALLBACK(MonitorUpdateAccStat);
! 109:
! 110: void InitAccStat();
! 111:
! 112: std::array<IODevice *, 256> devtable {};
! 113:
! 114: // アクセス状況は 32bit 空間全域を 2048 * 2MB ずつ。
! 115: // (NEWS は読み出し時にマージする)
! 116: std::array<uint8, 2048> accstat_read {};
! 117: std::array<uint8, 2048> accstat_write {};
! 118: // 表示エリア
! 119: std::array<uint8, 256 / 8> accstat_area {};
! 120: // 表示用(要素数は機種による)
! 121: std::vector<uint8> acc {};
1.1.1.2 root 122:
123: Monitor monitor { this };
1.1.1.3 ! root 124: Monitor monitor_accstat { this };
! 125:
! 126: private:
! 127: inline IODevice *Decoder(uint32 addr) const;
1.1 root 128: };
129:
130: static inline MainbusDevice *GetMainbusDevice() {
131: return Object::GetObject<MainbusDevice>(OBJ_MAINBUS);
132: }
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