Return to pedec.h CVS log

Up to [Isaki's NoNo m68k/m88k emulator] / nono / vm

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

1.1       root        1: //
                      2: // nono
                      3: // Copyright (C) 2020 nono project
                      4: // Licensed under nono-license.txt
                      5: //
                      6: 
1.1.1.6 ! root        7: //
        !             8: // PEDEC
        !             9: //
        !            10: 
1.1       root       11: #pragma once
                     12: 
                     13: #include "device.h"
                     14: #include "interrupt.h"
                     15: 
1.1.1.4   root       16: class PEDECDevice : public InterruptDevice
1.1       root       17: {
                     18:        using inherited = InterruptDevice;
1.1.1.6 ! root       19: 
1.1       root       20:        static const int baseaddr = 0xe9c000;
                     21: 
                     22:  public:
1.1.1.5   root       23:        // intmap が下位デバイスからの割り込み信号線 (%1 でアサート)。
                     24:        // intmap_enabled がマスク (%1 なら割り込み許可)。
1.1.1.2   root       25:        // よって二者を AND とれば上位に割り込みを上げるかどうかが求まる。
1.1.1.5   root       26:        // SPC からの割り込みはここでマスク制御しないので intmap_enabled には
1.1.1.2   root       27:        // IntmapSPC を常に立てておくこと。
1.1.1.5   root       28:        static const uint32 IntmapSPC = 0x0100;
                     29:        static const uint32 IntmapFDC = 0x0080;
                     30:        static const uint32 IntmapFDD = 0x0040;
                     31:        static const uint32 IntmapHDD = 0x0020;
                     32:        static const uint32 IntmapPRT = 0x0010;
1.1.1.2   root       33: 
                     34:  public:
1.1       root       35:        PEDECDevice();
                     36:        virtual ~PEDECDevice() override;
                     37: 
1.1.1.6 ! root       38:        void ResetHard(bool poweron) override;
1.1       root       39: 
                     40:        // InterruptDevice インタフェース
                     41:        int InterruptAcknowledge(int lv) override;
                     42: 
1.1.1.5   root       43:        // 割り込みコントローラからのモニタ表示
                     44:        void MonitorUpdate(TextScreen& screen, uint intr_level, int y);
1.1.1.2   root       45: 
1.1       root       46:  protected:
                     47:        // BusIO インタフェース
                     48:        static const uint32 NPORT = 8;
1.1.1.3   root       49:        uint64 Read(uint32 offset);
                     50:        uint64 Write(uint32 offset, uint32 data);
                     51:        uint64 Peek(uint32 offset);
1.1       root       52: 
                     53:  private:
1.1.1.5   root       54:        uint32 GetIntmap(Device *source) const override;
                     55: 
1.1       root       56:        // 割り込みステータスレジスタの値を取得
                     57:        uint32 GetStat() const;
                     58: 
                     59:        // 割り込み信号線の状態を変える
1.1.1.5   root       60:        void ChangeInterrupt() override;
1.1       root       61: 
1.1.1.5   root       62:        uint32 intmap_enabled {};
1.1       root       63:        uint8 vector {};
                     64: };
                     65: 
1.1.1.6 ! root       66: extern PEDECDevice *gPEDEC;

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.