93 lines
2.2 KiB
C++
93 lines
2.2 KiB
C++
//
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// Apple 2 floppy disk support
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//
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#ifndef __FLOPPY_H__
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#define __FLOPPY_H__
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// MAX_PATH isn't defined in stdlib.h on *nix, so we do it here...
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#ifdef __GCCUNIX__
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#include <limits.h>
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#define MAX_PATH _POSIX_PATH_MAX
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#else
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#include <stdlib.h> // for MAX_PATH on MinGW/Darwin
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// Kludge for Win64
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#ifndef MAX_PATH
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#define MAX_PATH _MAX_PATH
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#endif
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#endif
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#include <stdint.h>
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#include <stdio.h>
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enum { DFT_UNKNOWN, DT_DOS33, DT_DOS33_HDR, DT_PRODOS, DT_NYBBLE };
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enum { DLS_OFF, DLS_READ, DLS_WRITE };
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class FloppyDrive
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{
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public:
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FloppyDrive();
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~FloppyDrive();
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bool LoadImage(const char * filename, uint8_t driveNum = 0);
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bool SaveImage(uint8_t driveNum = 0);
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bool SaveImageAs(const char * filename, uint8_t driveNum = 0);
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void CreateBlankImage(uint8_t driveNum = 0);
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void SwapImages(void);
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const char * ImageName(uint8_t driveNum = 0);
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void EjectImage(uint8_t driveNum = 0);
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bool IsEmpty(uint8_t driveNum = 0);
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bool IsWriteProtected(uint8_t driveNum = 0);
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void SetWriteProtect(bool, uint8_t driveNum = 0);
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int DriveLightStatus(uint8_t driveNum = 0);
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void SaveState(FILE *);
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void LoadState(FILE *);
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private:
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uint32_t ReadLong(FILE *);
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void WriteLong(FILE *, uint32_t);
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// I/O functions ($C0Ex accesses)
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public:
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void ControlStepper(uint8_t addr);
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void ControlMotor(uint8_t addr);
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void DriveEnable(uint8_t addr);
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uint8_t ReadWrite(void);
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uint8_t GetLatchValue(void);
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void SetLatchValue(uint8_t value);
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void SetReadMode(void);
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void SetWriteMode(void);
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protected:
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void DetectImageType(const char * filename, uint8_t driveNum);
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void NybblizeImage(uint8_t driveNum);
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void DenybblizeImage(uint8_t driveNum);
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private:
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char imageName[2][MAX_PATH];
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uint8_t * disk[2];
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uint32_t diskSize[2];
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uint8_t diskType[2];
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bool imageDirty[2];
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bool writeProtected[2];
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uint8_t motorOn;
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uint8_t activeDrive;
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uint8_t ioMode;
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uint8_t latchValue;
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uint8_t phase;
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uint8_t track;
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bool ioHappened;
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uint8_t nybblizedImage[2][232960];
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uint32_t currentPos;
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// And here are some private class variables (to reduce function redundancy):
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static uint8_t header[21];
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static uint8_t doSector[16];
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static uint8_t poSector[16];
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static char nameBuf[MAX_PATH];
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};
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#endif // __FLOPPY_H__
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