aiie/apple/diskii.h
2020-07-04 08:03:13 -04:00

84 lines
1.7 KiB
C++

#ifndef __DISKII_H
#define __DISKII_H
#ifdef TEENSYDUINO
#include <Arduino.h>
#else
#include <stdint.h>
#include <stdio.h>
#endif
#include "woz-serializer.h"
#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 maintenance(uint32_t cycles);
uint8_t selectedDrive();
uint8_t headPosition(uint8_t drive);
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 driveOn();
void driveOff();
#ifndef TEENSYDUINO
void convertDskToNib(const char *outFN);
#endif
int64_t calcExpectedBits();
public:
// debugging
WozSerializer *disk[2];
private:
volatile int8_t curHalfTrack[2];
volatile uint8_t curWozTrack[2];
volatile int8_t curPhase[2];
volatile uint8_t readWriteLatch;
volatile uint8_t sequencer, dataRegister; // diskII logic state sequencer vars
volatile uint64_t driveSpinupCycles[2];
volatile uint64_t deliveredDiskBits[2];
bool writeMode;
bool writeProt;
AppleMMU *mmu;
volatile uint32_t diskIsSpinningUntil[2];
volatile int8_t selectedDisk;
volatile uint32_t flushAt[2];
};
#endif