aiie/apple/diskii.h
2017-12-30 20:22:22 -05:00

76 lines
1.8 KiB
C++

#ifndef __DISKII_H
#define __DISKII_H
#ifdef TEENSYDUINO
#include <Arduino.h>
#else
#include <stdint.h>
#include <stdio.h>
#endif
#include "filemanager.h"
#include "applemmu.h"
#include "Slot.h"
#include "LRingBuffer.h"
#include "nibutil.h"
class DiskII : public Slot {
public:
DiskII(AppleMMU *mmu);
virtual ~DiskII();
virtual bool Serialize(int8_t fd);
virtual bool Deserialize(int8_t fd);
virtual void Reset(); // used by BIOS cold-boot
virtual uint8_t readSwitches(uint8_t s);
virtual void writeSwitches(uint8_t s, uint8_t v);
virtual void loadROM(uint8_t *toWhere);
void insertDisk(int8_t driveNum, const char *filename, bool drawIt = true);
void ejectDisk(int8_t driveNum);
const char *DiskName(int8_t num);
void flushTrack(int8_t track, int8_t sel);
void fillDiskBuffer(); // called from main loop
private:
void setPhase(uint8_t phase);
bool isWriteProtected();
void setWriteMode(bool enable);
void select(int8_t which); // 0 or 1 for drives 1 and 2, respectively
uint8_t readOrWriteByte();
void checkFlush(int8_t track);
#ifndef TEENSYDUINO
void convertDskToNib(const char *outFN);
#endif
private:
volatile int8_t curHalfTrack[2];
volatile int8_t curPhase[2];
volatile bool trackDirty; // does this track need flushing to disk?
uint8_t readWriteLatch;
LRingBuffer *trackBuffer; // nibblized data
uint8_t *rawTrackBuffer; // not nibblized data
bool writeMode;
bool writeProt;
AppleMMU *mmu;
int8_t disk[2];
volatile uint8_t indicatorIsOn[2];
uint8_t diskType[2];
volatile int8_t trackToRead; // -1 when we're idle; not -1 when we need to read a track.
volatile int8_t selectedDisk;
volatile int8_t trackToFlush; // -1 when there's none
volatile int8_t diskToFlush; // which selected disk are we writing to?
};
#endif