source/src/vm/pc6031.h

   1 //
   2 // PC-6001/6601 disk I/O
   3 // This file is based on a disk I/O program in C++
   4 // by Mr. Yumitaro and translated into C for Cocoa iP6
   5 // by Koichi NISHIDA 2006
   6 //
   7
   8 /*
   9         Skelton for retropc emulator
  10
  11         Author : Takeda.Toshiya
  12         Origin : tanam
  13         Date   : 2014.05.21-
  14
  15         [ PC-6031 ]
  16 */
  17
  18 #ifndef _PC6031_H_
  19 #define _PC6031_H_
  20
  21 #include "vm.h"
  22 #include "../emu.h"
  23 #include "device.h"
  24
  25 class DISK;
  26
  27 class PC6031 : public DEVICE
  28 {
  29 private:
  30         DISK* disk[2];
  31
  32         int cur_trk[2];
  33         int cur_sct[2];
  34         int cur_pos[2];
  35         bool access[2];
  36
  37         int Seek88(int drvno, int trackno, int sectno);
  38         unsigned char Getc88(int drvno);
  39         int Putc88(int drvno, unsigned char dat);
  40
  41         typedef struct {
  42                 int ATN;                                // attention
  43                 int DAC;                                // data accepted
  44                 int RFD;                                // ready for data
  45                 int DAV;                                // data valid
  46                 int command;                    // received command
  47                 int step;                               // status for waiting parameter
  48                 int blk;                                // block number
  49                 int drv;                                // drive number - 1
  50                 int trk;                                // track number
  51                 int sct;                                // sector number
  52                 int size;                               // byte number to process
  53                 unsigned char retdat;   // return from port D0H
  54         } DISK60;
  55
  56         DISK60 mdisk;
  57         unsigned char io_D1H;
  58         unsigned char io_D2H, old_D2H;
  59         unsigned char io_D3H;
  60         int DrvNum;
  61
  62         unsigned char FddIn60();
  63         void FddOut60(unsigned char dat);
  64         unsigned char FddCntIn60(void);
  65         void FddCntOut60(unsigned char dat);
  66
  67         void OutD1H_60(unsigned char data);
  68         void OutD2H_60(unsigned char data);
  69         void OutD3H_60(unsigned char data);
  70
  71         unsigned char InD0H_60();
  72         unsigned char InD1H_60();
  73         unsigned char InD2H_60();
  74         unsigned char InD3H_60();
  75
  76 public:
  77         PC6031(VM* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu) {
  78                 set_device_name(_T("PSEUDO PC-6031"));
  79         }
  80         ~PC6031() {}
  81
  82         // common functions
  83         void initialize();
  84         void release();
  85         void write_io8(uint32_t addr, uint32_t data);
  86         uint32_t read_io8(uint32_t addr);
  87         uint32_t read_signal(int ch);
  88         void save_state(FILEIO* state_fio);
  89         bool load_state(FILEIO* state_fio);
  90
  91         // unique functions
  92         DISK* get_disk_handler(int drv)
  93         {
  94                 return disk[drv];
  95         }
  96         void open_disk(int drv, const _TCHAR* file_path, int bank);
  97         void close_disk(int drv);
  98         bool is_disk_inserted(int drv);
  99         bool disk_ejected(int drv);
 100         void is_disk_protected(int drv, bool value);
 101         bool is_disk_protected(int drv);
 102 };
 103
 104 #endif
 105