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Annotation of nono/vm/cmmu.h, revision 1.1.1.8

1.1       root        1: //
                      2: // nono
                      3: // Copyright (C) 2020 nono project
                      4: // Licensed under nono-license.txt
                      5: //
                      6: 
1.1.1.4   root        7: //
1.1       root        8: // M88200 CMMU の I/O デバイス部分
1.1.1.4   root        9: //
1.1       root       10: 
                     11: #pragma once
                     12: 
                     13: #include "device.h"
1.1.1.5   root       14: #include <array>
                     15: 
                     16: class m88200;
1.1       root       17: 
1.1.1.3   root       18: class CMMUDevice : public IODevice
1.1       root       19: {
                     20:        using inherited = IODevice;
                     21: 
                     22:        // レジスタオフセット
                     23:        static const uint32 IDR         = 0x000;
                     24:        static const uint32 SCR         = 0x004;
                     25:        static const uint32 SSR         = 0x008;
                     26:        static const uint32 SAR         = 0x00c;
                     27:        static const uint32 SCTR        = 0x104;
                     28:        static const uint32 PFSR        = 0x108;
                     29:        static const uint32 PFAR        = 0x10c;
                     30: 
                     31:        static const uint32 SAPR        = 0x200;
                     32:        static const uint32 UAPR        = 0x204;
                     33: 
                     34:        static const uint32 BWP0        = 0x400;
                     35:        static const uint32 BWP7        = 0x41c;
                     36:        static const uint32 CDP0        = 0x800;
                     37:        static const uint32 CDP3        = 0x80c;
                     38:        static const uint32 CTP0        = 0x840;
                     39:        static const uint32 CTP3        = 0x84c;
                     40: 
                     41:        static const uint32 CSSP        = 0x880;
                     42: 
                     43:  public:
                     44:        CMMUDevice();
1.1.1.6   root       45:        ~CMMUDevice() override;
1.1       root       46: 
                     47:        bool Init() override;
                     48: 
1.1.1.7   root       49:        busdata Read(busaddr addr) override;
                     50:        busdata Write(busaddr addr, uint32 data) override;
                     51:        busdata Peek1(uint32 addr) override;
1.1       root       52: 
                     53:  private:
                     54:        // アドレスデコーダ
                     55:        static uint32 Decoder(uint32 addr);
                     56: 
1.1.1.7   root       57:        // Peek1() の下請け
                     58:        uint32 Peek4(uint32 addr) const;
1.1.1.5   root       59: 
1.1       root       60:        // 指定された ID の CMMU(m88200) を返す。なければ NULL を返す。
                     61:        m88200 *GetCMMU(uint id) const {
1.1.1.5   root       62:                if (id >= cmmus.size()) {
1.1       root       63:                        return NULL;
                     64:                }
                     65:                return cmmus[id];
                     66:        }
                     67: 
1.1.1.5   root       68:        // CMMU へのリンク (最大 4 MPU)
                     69:        std::array<m88200*, 8> cmmus {};
1.1       root       70: };
                     71: 
1.1.1.8 ! root       72: inline CMMUDevice *GetCMMUDevice() {
1.1.1.5   root       73:        return Object::GetObject<CMMUDevice>(OBJ_CMMUIO);
                     74: }

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