Return to adpcm.h CVS log

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

Annotation of nono/vm/adpcm.h, revision 1.1.1.3

1.1       root        1: //
                      2: // nono
                      3: // Copyright (C) 2022 nono project
                      4: // Licensed under nono-license.txt
                      5: //
                      6: 
                      7: //
                      8: // ADPCM (MSM6258V)
                      9: //
                     10: 
                     11: #pragma once
                     12: 
                     13: #include "device.h"
                     14: #include "event.h"
                     15: 
1.1.1.2   root       16: class DMACDevice;
                     17: class PPIDevice;
                     18: 
1.1       root       19: class ADPCMDevice : public IODevice
                     20: {
                     21:        using inherited = IODevice;
                     22: 
                     23:        static const int baseaddr = 0xe92000;
                     24: 
                     25:        static const uint8 STAT_PLAY    = 0x80;
                     26: 
                     27:        static const uint8 REC_START    = 0x04;
                     28:        static const uint8 PLAY_START   = 0x02;
                     29:        static const uint8 STOP                 = 0x01;
                     30: 
                     31:  public:
                     32:        ADPCMDevice();
1.1.1.3 ! root       33:        ~ADPCMDevice() override;
1.1       root       34: 
1.1.1.2   root       35:        bool Init() override;
1.1       root       36:        void ResetHard(bool poweron) override;
                     37: 
                     38:        // CT1 によるクロック切り替え。OPM から呼ばれる。
                     39:        void SetClock(bool);
                     40: 
                     41:        // DMAC から呼ばれる。
                     42:        void AssertDACK(bool tc);
                     43:        void NegateDACK();
                     44: 
                     45:  protected:
                     46:        // BusIO インタフェース
                     47:        static const uint32 NPORT = 2;
1.1.1.3 ! root       48:        busdata Read(uint32 offset);
        !            49:        busdata Write(uint32 offset, uint32 data);
        !            50:        busdata Peek(uint32 offset);
1.1       root       51: 
                     52:  private:
                     53:        void StartPlay();
                     54: 
                     55:        void EventCallback(Event&);
                     56: 
                     57:        bool playing {};
                     58:        bool dack {};
                     59:        int clk {};
                     60:        int div {};
                     61: 
1.1.1.2   root       62:        DMACDevice *dmac {};
                     63:        PPIDevice *ppi {};
                     64: 
1.1       root       65:        Event event { this };
                     66: };
                     67: 
1.1.1.2   root       68: static inline ADPCMDevice *GetADPCMDevice() {
                     69:        return Object::GetObject<ADPCMDevice>(OBJ_ADPCM);
                     70: }

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