mirror of
https://github.com/AppleWin/AppleWin.git
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318 lines
10 KiB
C++
318 lines
10 KiB
C++
#pragma once
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/*
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AppleWin : An Apple //e emulator for Windows
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Copyright (C) 1994-1996, Michael O'Brien
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Copyright (C) 1999-2001, Oliver Schmidt
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Copyright (C) 2002-2005, Tom Charlesworth
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Copyright (C) 2006-2019, Tom Charlesworth, Michael Pohoreski, Nick Westgate
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AppleWin is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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AppleWin is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with AppleWin; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "Card.h"
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#include "Log.h"
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#include "DiskLog.h"
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#include "DiskFormatTrack.h"
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#include "DiskImage.h"
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#include "SynchronousEventManager.h"
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enum Drive_e
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{
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DRIVE_1 = 0,
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DRIVE_2,
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NUM_DRIVES
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};
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const bool IMAGE_USE_FILES_WRITE_PROTECT_STATUS = false;
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const bool IMAGE_FORCE_WRITE_PROTECTED = true;
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const bool IMAGE_DONT_CREATE = false;
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const bool IMAGE_CREATE = true;
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class FloppyDisk
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{
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public:
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FloppyDisk()
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{
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clear();
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}
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~FloppyDisk(){}
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void clear()
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{
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m_imagename.clear();
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m_fullname.clear();
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m_strFilenameInZip.clear();
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m_imagehandle = NULL;
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m_bWriteProtected = false;
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//
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m_byte = 0;
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m_nibbles = 0;
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m_bitOffset = 0;
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m_bitCount = 0;
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m_bitMask = 1 << 7;
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m_extraCycles = 0.0;
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m_trackimage = NULL;
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m_trackimagedata = false;
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m_trackimagedirty = false;
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m_longestSyncFFRunLength = 0;
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m_longestSyncFFBitOffsetStart = -1;
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m_initialBitOffset = 0;
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m_revs = 0;
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}
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public:
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std::string m_imagename; // <FILENAME> (ie. no extension)
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std::string m_fullname; // <FILENAME.EXT> or <FILENAME.zip> : This is persisted to the snapshot file
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std::string m_strFilenameInZip; // "" or <FILENAME.EXT>
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ImageInfo* m_imagehandle; // Init'd by InsertDisk() -> ImageOpen()
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bool m_bWriteProtected;
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int m_byte; // byte offset
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int m_nibbles; // # nibbles in track / Init'd by ReadTrack() -> ImageReadTrack()
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UINT m_bitOffset; // bit offset
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UINT m_bitCount; // # bits in track
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BYTE m_bitMask;
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double m_extraCycles;
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LPBYTE m_trackimage;
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bool m_trackimagedata;
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bool m_trackimagedirty;
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UINT m_longestSyncFFRunLength;
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int m_longestSyncFFBitOffsetStart;
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UINT m_initialBitOffset; // debug
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UINT m_revs; // debug
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};
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class FloppyDrive
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{
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public:
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FloppyDrive()
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{
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clear();
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}
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~FloppyDrive(){}
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void clear()
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{
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m_isConnected = true;
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m_phasePrecise = 0;
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m_phase = 0;
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m_lastStepperCycle = 0;
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m_motorOnCycle = 0;
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m_headWindow = 0;
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m_spinning = 0;
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m_writelight = 0;
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m_disk.clear();
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}
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public:
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bool m_isConnected;
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float m_phasePrecise; // Phase precise to half a phase (aka quarter track)
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int m_phase; // Integral phase number
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unsigned __int64 m_lastStepperCycle;
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unsigned __int64 m_motorOnCycle;
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BYTE m_headWindow;
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DWORD m_spinning;
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DWORD m_writelight;
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FloppyDisk m_disk;
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};
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class Disk2InterfaceCard : public Card
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{
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public:
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Disk2InterfaceCard(UINT slot);
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virtual ~Disk2InterfaceCard(void);
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virtual void Reset(const bool powerCycle);
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virtual void InitializeIO(LPBYTE pCxRomPeripheral);
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virtual void Update(const ULONG nExecutedCycles);
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virtual void Destroy(void); // no, doesn't "destroy" the disk image. DiskIIManagerShutdown()
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void Boot(void);
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void FlushCurrentTrack(const int drive);
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const std::string & GetFullDiskFilename(const int drive);
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const std::string & DiskGetFullPathName(const int drive);
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const std::string & GetFullName(const int drive);
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const std::string & GetBaseName(const int drive);
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void GetFilenameAndPathForSaveState(std::string& filename, std::string& path);
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void GetLightStatus (Disk_Status_e* pDisk1Status, Disk_Status_e* pDisk2Status);
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ImageError_e InsertDisk(const int drive, const std::string& pathname, const bool bForceWriteProtected, const bool bCreateIfNecessary);
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void EjectDisk(const int drive);
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void UnplugDrive(const int drive);
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bool IsConditionForFullSpeed(void);
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void NotifyInvalidImage(const int drive, const std::string & szImageFilename, const ImageError_e Error);
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UINT GetCurrentBitOffset(void);
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UINT GetCurrentFirmware(void) { return m_is13SectorFirmware ? 13 : 16; }
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double GetCurrentExtraCycles(void);
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float GetCurrentPhase(void);
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int GetCurrentDrive(void);
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BYTE GetCurrentShiftReg(void);
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int GetCurrentTrack(void);
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float GetPhase(const int drive);
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int GetTrack(const int drive);
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static std::string FormatIntFracString(float phase, bool hex);
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std::string GetCurrentTrackString(void);
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std::string GetCurrentPhaseString(void);
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LPCTSTR GetCurrentState(Disk_Status_e& eDiskState_);
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bool UserSelectNewDiskImage(const int drive, LPCSTR pszFilename="");
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bool DriveSwap(void);
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bool IsDriveConnected(int drive) { return m_floppyDrive[drive].m_isConnected; }
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void SetFirmware13Sector(void) { m_force13SectorFirmware = true; }
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static const std::string& GetSnapshotCardName(void);
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virtual void SaveSnapshot(YamlSaveHelper& yamlSaveHelper);
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virtual bool LoadSnapshot(YamlLoadHelper& yamlLoadHelper, UINT version);
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void LoadLastDiskImage(const int drive);
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void SaveLastDiskImage(const int drive);
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bool GetProtect(const int drive);
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void SetProtect(const int drive, const bool bWriteProtect);
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bool IsDriveEmpty(const int drive);
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bool IsWozImageInDrive(const int drive);
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bool GetEnhanceDisk(void);
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void SetEnhanceDisk(bool bEnhanceDisk);
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static BYTE __stdcall IORead(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nExecutedCycles);
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static BYTE __stdcall IOWrite(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nExecutedCycles);
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private:
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void ResetSwitches(void);
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void CheckSpinning(const bool stateChanged, const ULONG uExecutedCycles);
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Disk_Status_e GetDriveLightStatus(const int drive);
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bool IsDriveValid(const int drive);
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void EjectDiskInternal(const int drive);
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void AllocTrack(const int drive, const UINT minSize=NIBBLES_PER_TRACK);
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void ReadTrack(const int drive, ULONG uExecutedCycles);
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void WriteTrack(const int drive);
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void ResetLogicStateSequencer(void);
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UINT GetBitCellDelta(const ULONG uExecutedCycles);
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void UpdateBitStreamPosition(FloppyDisk& floppy, const ULONG bitCellDelta);
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void UpdateBitStreamOffsets(FloppyDisk& floppy);
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__forceinline void IncBitStream(FloppyDisk& floppy);
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void DataLatchReadWOZ(WORD pc, WORD addr, UINT bitCellRemainder);
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void DataLoadWriteWOZ(WORD pc, WORD addr, UINT bitCellRemainder);
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void DataShiftWriteWOZ(WORD pc, WORD addr, ULONG uExecutedCycles);
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void SetSequencerFunction(WORD addr, ULONG executedCycles);
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void FindTrackSeamWOZ(FloppyDisk& floppy, float track);
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void DumpTrackWOZ(FloppyDisk floppy);
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bool GetFirmware(WORD lpNameId, BYTE* pDst);
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void InitFirmware(LPBYTE pCxRomPeripheral);
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void UpdateLatchForEmptyDrive(FloppyDrive* pDrive);
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void InsertSyncEvent(void);
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static int SyncEventCallback(int id, int cycles, ULONG uExecutedCycles);
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void ControlStepperDeferred(void);
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void ControlStepperLogging(WORD address, unsigned __int64 cumulativeCycles);
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void PreJitterCheck(int phase, BYTE latch);
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void AddJitter(int phase, FloppyDisk& floppy);
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void AddTrackSeamJitter(float phasePrecise, FloppyDisk& floppy);
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void SaveSnapshotFloppy(YamlSaveHelper& yamlSaveHelper, UINT unit);
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void SaveSnapshotDriveUnit(YamlSaveHelper& yamlSaveHelper, UINT unit);
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bool LoadSnapshotFloppy(YamlLoadHelper& yamlLoadHelper, UINT unit, UINT version, std::vector<BYTE>& track);
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bool LoadSnapshotDriveUnitv3(YamlLoadHelper& yamlLoadHelper, UINT unit, UINT version, std::vector<BYTE>& track);
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bool LoadSnapshotDriveUnitv4(YamlLoadHelper& yamlLoadHelper, UINT unit, UINT version, std::vector<BYTE>& track);
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void LoadSnapshotDriveUnit(YamlLoadHelper& yamlLoadHelper, UINT unit, UINT version);
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void __stdcall ControlStepper(WORD, WORD address, BYTE, BYTE, ULONG uExecutedCycles);
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void __stdcall ControlMotor(WORD, WORD address, BYTE, BYTE, ULONG uExecutedCycles);
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bool __stdcall Enable(WORD, WORD address, BYTE, BYTE, ULONG uExecutedCycles);
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void __stdcall ReadWrite(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG uExecutedCycles);
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void __stdcall DataLatchReadWriteWOZ(WORD pc, WORD addr, BYTE bWrite, ULONG uExecutedCycles);
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void __stdcall LoadWriteProtect(WORD, WORD, BYTE write, BYTE value, ULONG);
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void __stdcall SetReadMode(WORD, WORD, BYTE, BYTE, ULONG);
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void __stdcall SetWriteMode(WORD, WORD, BYTE, BYTE, ULONG uExecutedCycles);
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#if LOG_DISK_NIBBLES_WRITE
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bool LogWriteCheckSyncFF(ULONG& uCycleDelta);
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#endif
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//
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static const UINT DISK2_FW_SIZE = 256;
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BYTE m_13SectorFirmware[DISK2_FW_SIZE];
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BYTE m_16SectorFirmware[DISK2_FW_SIZE];
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bool m_is13SectorFirmware;
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bool m_force13SectorFirmware;
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WORD m_currDrive;
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FloppyDrive m_floppyDrive[NUM_DRIVES];
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BYTE m_floppyLatch;
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BOOL m_floppyMotorOn;
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// Although the magnets are a property of the drive, their state is a property of the controller card,
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// since the magnets will only be on for whichever of the 2 drives is currently selected.
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WORD m_magnetStates; // state bits for stepper motor magnet states (phases 0 - 3)
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bool m_saveDiskImage;
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unsigned __int64 m_diskLastCycle;
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unsigned __int64 m_diskLastReadLatchCycle;
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FormatTrack m_formatTrack;
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bool m_enhanceDisk;
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static const UINT SPINNING_CYCLES = 1000*1000; // 1M cycles = ~1.000s
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static const UINT WRITELIGHT_CYCLES = 1000*1000; // 1M cycles = ~1.000s
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static const UINT MOTOR_ON_UNTIL_LSS_STABLE_CYCLES = 0x2EC; // ~0x2EC-0x990 cycles (depending on card). See GH#864
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// Logic State Sequencer (for WOZ):
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BYTE m_shiftReg;
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int m_latchDelay;
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bool m_writeStarted;
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enum SEQFUNC {readSequencing=0, dataShiftWrite, checkWriteProtAndInitWrite, dataLoadWrite}; // UTAIIe 9-14
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union SEQUENCER_FUNCTION
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{
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struct
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{
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UINT writeMode : 1; // $C08E/F,X
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UINT loadMode : 1; // $C08C/D,X
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};
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SEQFUNC function;
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};
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SEQUENCER_FUNCTION m_seqFunc;
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UINT m_dbgLatchDelayedCnt;
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bool m_deferredStepperEvent;
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WORD m_deferredStepperAddress;
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unsigned __int64 m_deferredStepperCumulativeCycles;
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SyncEvent m_syncEvent;
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// Jitter (GH#930)
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static const BYTE m_T00S00Pattern[];
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UINT m_T00S00PatternIdx;
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bool m_foundT00S00Pattern;
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// Debug:
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#if LOG_DISK_NIBBLES_USE_RUNTIME_VAR
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bool m_bLogDisk_NibblesRW; // From VS Debugger, change this to true/false during runtime for precise nibble logging
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#endif
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#if LOG_DISK_NIBBLES_WRITE
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UINT64 m_uWriteLastCycle;
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UINT m_uSyncFFCount;
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#endif
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};
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