Shamusworld >> Repos - apple2/blob - src/floppy.h

   1 //
   2 // Apple 2 floppy disk support
   3 //
   4
   5 #ifndef __FLOPPY_H__
   6 #define __FLOPPY_H__
   7
   8 // MAX_PATH isn't defined in stdlib.h on *nix, so we do it here...
   9 #ifdef __GCCUNIX__
  10 #include <limits.h>
  11 #define MAX_PATH                _POSIX_PATH_MAX
  12 #else
  13 #include <stdlib.h>                                                             // for MAX_PATH on MinGW/Darwin
  14 #endif
  15 #include "types.h"
  16
  17 enum { DT_UNKNOWN, DT_DOS33, DT_PRODOS, DT_NYBBLE };
  18
  19 class FloppyDrive
  20 {
  21         public:
  22                 FloppyDrive();
  23                 ~FloppyDrive();
  24
  25                 bool LoadImage(const char * filename, uint8 driveNum = 0);
  26                 bool SaveImage(uint8 driveNum = 0);
  27                 bool SaveImageAs(const char * filename, uint8 driveNum = 0);
  28                 void CreateBlankImage(uint8 driveNum = 0);
  29                 void SwapImages(void);
  30                 const char * GetImageName(uint8 driveNum = 0);
  31                 void EjectImage(uint8 driveNum = 0);
  32                 bool DriveIsEmpty(uint8 driveNum = 0);
  33
  34                 // I/O functions ($C0Ex accesses)
  35
  36                 void ControlStepper(uint8 addr);
  37                 void ControlMotor(uint8 addr);
  38                 void DriveEnable(uint8 addr);
  39                 uint8 ReadWrite(void);
  40                 uint8 GetLatchValue(void);
  41                 void SetLatchValue(uint8 value);
  42                 void SetReadMode(void);
  43                 void SetWriteMode(void);
  44
  45         protected:
  46                 void DetectImageType(const char * filename, uint8 driveNum);
  47                 void NybblizeImage(uint8 driveNum);
  48                 void DenybblizeImage(uint8 driveNum);
  49
  50         private:
  51                 char imageName[2][MAX_PATH];
  52                 uint8 * disk[2];
  53                 uint32 diskSize[2];
  54                 uint8 diskType[2];
  55                 bool imageDirty[2];
  56                 uint8 motorOn;
  57                 uint8 activeDrive;
  58                 uint8 ioMode;
  59                 uint8 latchValue;
  60                 uint8 phase;
  61                 uint8 track;
  62
  63                 uint8 nybblizedImage[2][232960];
  64                 uint32 currentPos;
  65
  66                 // And here are some private class variables (to reduce function redundancy):
  67                 static uint8 header[21];
  68                 static uint8 doSector[16];
  69                 static uint8 poSector[16];
  70                 static char nameBuf[MAX_PATH];
  71 };
  72
  73 #endif  // __FLOPPY_H__