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AppleWin/source/Disk.cpp

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/*
AppleWin : An Apple //e emulator for Windows
Copyright (C) 1994-1996, Michael O'Brien
Copyright (C) 1999-2001, Oliver Schmidt
Copyright (C) 2002-2005, Tom Charlesworth
Copyright (C) 2006-2015, Tom Charlesworth, Michael Pohoreski, Nick Westgate
AppleWin is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
AppleWin is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with AppleWin; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Description: Disk
*
* Author: Various
*
* In comments, UTA2E is an abbreviation for a reference to "Understanding the Apple //e" by James Sather
*/
#include "StdAfx.h"
#include "SaveState_Structs_v1.h"
#include "AppleWin.h"
#include "Disk.h"
#include "DiskImage.h"
#include "Frame.h"
#include "Log.h"
#include "Memory.h"
#include "Registry.h"
#include "Video.h"
#include "YamlHelper.h"
#include "..\resource\resource.h"
#define LOG_DISK_ENABLED 0
#define LOG_DISK_TRACKS 1
#define LOG_DISK_MOTOR 0
#define LOG_DISK_PHASES 0
#define LOG_DISK_NIBBLES 0
// __VA_ARGS__ not supported on MSVC++ .NET 7.x
#if (LOG_DISK_ENABLED)
#if !defined(_VC71)
#define LOG_DISK(format, ...) LOG(format, __VA_ARGS__)
#else
#define LOG_DISK LogOutput
#endif
#else
#if !defined(_VC71)
#define LOG_DISK(...)
#else
#define LOG_DISK(x)
#endif
#endif
// Public _________________________________________________________________________________________
BOOL enhancedisk = 1; // TODO: Make static & add accessor funcs
// Private ________________________________________________________________________________________
struct Disk_t
{
TCHAR imagename[ MAX_DISK_IMAGE_NAME + 1 ]; // <FILENAME> (ie. no extension)
TCHAR fullname [ MAX_DISK_FULL_NAME + 1 ]; // <FILENAME.EXT> or <FILENAME.zip> : This is persisted to the snapshot file
std::string strFilenameInZip; // "" or <FILENAME.EXT>
HIMAGE imagehandle; // Init'd by DiskInsert() -> ImageOpen()
bool bWriteProtected;
//
int track;
LPBYTE trackimage;
int phase;
int byte;
BOOL trackimagedata;
BOOL trackimagedirty;
DWORD spinning;
DWORD writelight;
int nibbles; // Init'd by ReadTrack() -> ImageReadTrack()
const Disk_t& operator= (const Disk_t& other)
{
memcpy(imagename, other.imagename, sizeof(imagename));
memcpy(fullname , other.fullname, sizeof(fullname));
strFilenameInZip = other.strFilenameInZip;
imagehandle = other.imagehandle;
bWriteProtected = other.bWriteProtected;
track = other.track;
trackimage = other.trackimage;
phase = other.phase;
byte = other.byte;
trackimagedata = other.trackimagedata;
trackimagedirty = other.trackimagedirty;
spinning = other.spinning;
writelight = other.writelight;
nibbles = other.nibbles;
return *this;
}
};
static WORD currdrive = 0;
static BOOL diskaccessed = 0;
static Disk_t g_aFloppyDisk[NUM_DRIVES];
static BYTE floppylatch = 0;
static BOOL floppymotoron = 0;
static BOOL floppyloadmode = 0; // for efficiency this is not used; it's extremely unlikely to affect emulation (nickw)
static BOOL floppywritemode = 0;
static WORD phases = 0; // state bits for stepper magnet phases 0 - 3
static bool g_bSaveDiskImage = true; // Save the DiskImage name to Registry
static UINT g_uSlot = 0;
static void CheckSpinning();
static Disk_Status_e GetDriveLightStatus( const int iDrive );
static bool IsDriveValid( const int iDrive );
static void ReadTrack (int drive);
static void RemoveDisk (int drive);
static void WriteTrack (int drive);
static LPCTSTR DiskGetFullPathName(const int iDrive);
//===========================================================================
int DiskGetCurrentDrive(void) { return currdrive; }
int DiskGetCurrentTrack(void) { return g_aFloppyDisk[currdrive].track; }
int DiskGetCurrentPhase(void) { return g_aFloppyDisk[currdrive].phase; }
int DiskGetCurrentOffset(void) { return g_aFloppyDisk[currdrive].byte; }
int DiskGetTrack( int drive ) { return g_aFloppyDisk[ drive ].track; }
const char* DiskGetDiskPathFilename(const int iDrive)
{
return g_aFloppyDisk[iDrive].fullname;
}
char* DiskGetCurrentState(void)
{
if (g_aFloppyDisk[currdrive].imagehandle == NULL)
return "Empty";
if (!floppymotoron)
{
if (g_aFloppyDisk[currdrive].spinning > 0)
return "Off (spinning)";
else
return "Off";
}
else if (floppywritemode)
{
if (g_aFloppyDisk[currdrive].bWriteProtected)
return "Writing (write protected)";
else
return "Writing";
}
else
{
/*if (floppyloadmode)
{
if (g_aFloppyDisk[currdrive].bWriteProtected)
return "Reading write protect state (write protected)";
else
return "Reading write protect state (not write protected)";
}
else*/
return "Reading";
}
}
//===========================================================================
void Disk_LoadLastDiskImage(const int iDrive)
{
_ASSERT(iDrive == DRIVE_1 || iDrive == DRIVE_2);
char sFilePath[ MAX_PATH + 1];
sFilePath[0] = 0;
char *pRegKey = (iDrive == DRIVE_1)
? REGVALUE_PREF_LAST_DISK_1
: REGVALUE_PREF_LAST_DISK_2;
if (RegLoadString(TEXT(REG_PREFS), pRegKey, 1, sFilePath, MAX_PATH))
{
sFilePath[ MAX_PATH ] = 0;
g_bSaveDiskImage = false;
// Pass in ptr to local copy of filepath, since RemoveDisk() sets DiskPathFilename = ""
DiskInsert(iDrive, sFilePath, IMAGE_USE_FILES_WRITE_PROTECT_STATUS, IMAGE_DONT_CREATE);
g_bSaveDiskImage = true;
}
}
//===========================================================================
void Disk_SaveLastDiskImage(const int iDrive)
{
_ASSERT(iDrive == DRIVE_1 || iDrive == DRIVE_2);
if (!g_bSaveDiskImage)
return;
const char *pFileName = g_aFloppyDisk[iDrive].fullname;
if (iDrive == DRIVE_1)
RegSaveString(TEXT(REG_PREFS), REGVALUE_PREF_LAST_DISK_1, TRUE, pFileName);
else
RegSaveString(TEXT(REG_PREFS), REGVALUE_PREF_LAST_DISK_2, TRUE, pFileName);
//
char szPathName[MAX_PATH];
strcpy(szPathName, DiskGetFullPathName(iDrive));
if (_tcsrchr(szPathName, TEXT('\\')))
{
char* pPathEnd = _tcsrchr(szPathName, TEXT('\\'))+1;
*pPathEnd = 0;
RegSaveString(TEXT(REG_PREFS), TEXT(REGVALUE_PREF_START_DIR), 1, szPathName);
}
}
//===========================================================================
static void CheckSpinning(void)
{
DWORD modechange = (floppymotoron && !g_aFloppyDisk[currdrive].spinning);
if (floppymotoron)
g_aFloppyDisk[currdrive].spinning = 20000;
if (modechange)
//FrameRefreshStatus(DRAW_LEDS);
FrameDrawDiskLEDS( (HDC)0 );
}
//===========================================================================
static Disk_Status_e GetDriveLightStatus(const int iDrive)
{
if (IsDriveValid( iDrive ))
{
Disk_t *pFloppy = & g_aFloppyDisk[ iDrive ];
if (pFloppy->spinning)
{
if (pFloppy->bWriteProtected)
return DISK_STATUS_PROT;
if (pFloppy->writelight)
return DISK_STATUS_WRITE;
else
return DISK_STATUS_READ;
}
else
return DISK_STATUS_OFF;
}
return DISK_STATUS_OFF;
}
//===========================================================================
static bool IsDriveValid(const int iDrive)
{
return (iDrive >= 0 && iDrive < NUM_DRIVES);
}
//===========================================================================
static void AllocTrack(const int iDrive)
{
Disk_t * fptr = &g_aFloppyDisk[iDrive];
fptr->trackimage = (LPBYTE)VirtualAlloc(NULL, NIBBLES_PER_TRACK, MEM_COMMIT, PAGE_READWRITE);
}
//===========================================================================
static void ReadTrack(const int iDrive)
{
if (! IsDriveValid( iDrive ))
return;
Disk_t *pFloppy = &g_aFloppyDisk[ iDrive ];
if (pFloppy->track >= ImageGetNumTracks(pFloppy->imagehandle))
{
pFloppy->trackimagedata = 0;
return;
}
if (! pFloppy->trackimage)
AllocTrack( iDrive );
if (pFloppy->trackimage && pFloppy->imagehandle)
{
#if LOG_DISK_TRACKS
LOG_DISK("track $%02X%s read\r\n", pFloppy->track, (pFloppy->phase & 1) ? ".5" : " ");
#endif
ImageReadTrack(
pFloppy->imagehandle,
pFloppy->track,
pFloppy->phase,
pFloppy->trackimage,
&pFloppy->nibbles);
pFloppy->byte = 0;
pFloppy->trackimagedata = (pFloppy->nibbles != 0);
}
}
//===========================================================================
static void RemoveDisk(const int iDrive)
{
Disk_t *pFloppy = &g_aFloppyDisk[iDrive];
if (pFloppy->imagehandle)
{
if (pFloppy->trackimage && pFloppy->trackimagedirty)
WriteTrack( iDrive);
ImageClose(pFloppy->imagehandle);
pFloppy->imagehandle = (HIMAGE)0;
}
if (pFloppy->trackimage)
{
VirtualFree(pFloppy->trackimage,0,MEM_RELEASE);
pFloppy->trackimage = NULL;
pFloppy->trackimagedata = 0;
}
memset( pFloppy->imagename, 0, MAX_DISK_IMAGE_NAME+1 );
memset( pFloppy->fullname , 0, MAX_DISK_FULL_NAME +1 );
pFloppy->strFilenameInZip = "";
Disk_SaveLastDiskImage( iDrive );
Video_ResetScreenshotCounter( NULL );
}
//===========================================================================
static void WriteTrack(const int iDrive)
{
Disk_t *pFloppy = &g_aFloppyDisk[ iDrive ];
if (pFloppy->track >= ImageGetNumTracks(pFloppy->imagehandle))
return;
if (pFloppy->bWriteProtected)
return;
if (pFloppy->trackimage && pFloppy->imagehandle)
{
#if LOG_DISK_TRACKS
LOG_DISK("track $%02X%s write\r\n", pFloppy->track, (pFloppy->phase & 0) ? ".5" : " "); // TODO: hard-coded to whole tracks - see below (nickw)
#endif
ImageWriteTrack(
pFloppy->imagehandle,
pFloppy->track,
pFloppy->phase, // TODO: this should never be used; it's the current phase (half-track), not that of the track to be written (nickw)
pFloppy->trackimage,
pFloppy->nibbles);
}
pFloppy->trackimagedirty = 0;
}
//
// ----- ALL GLOBALLY ACCESSIBLE FUNCTIONS ARE BELOW THIS LINE -----
//
//===========================================================================
void DiskBoot(void)
{
// THIS FUNCTION RELOADS A PROGRAM IMAGE IF ONE IS LOADED IN DRIVE ONE.
// IF A DISK IMAGE OR NO IMAGE IS LOADED IN DRIVE ONE, IT DOES NOTHING.
if (g_aFloppyDisk[0].imagehandle && ImageBoot(g_aFloppyDisk[0].imagehandle))
floppymotoron = 0;
}
//===========================================================================
static void __stdcall DiskControlMotor(WORD, WORD address, BYTE, BYTE, ULONG uExecutedCycles)
{
floppymotoron = address & 1;
#if LOG_DISK_MOTOR
LOG_DISK("motor %s\r\n", (floppymotoron) ? "on" : "off");
#endif
CheckSpinning();
}
//===========================================================================
static void __stdcall DiskControlStepper(WORD, WORD address, BYTE, BYTE, ULONG uExecutedCycles)
{
Disk_t * fptr = &g_aFloppyDisk[currdrive];
int phase = (address >> 1) & 3;
int phase_bit = (1 << phase);
#if 1
// update the magnet states
if (address & 1)
{
// phase on
phases |= phase_bit;
}
else
{
// phase off
phases &= ~phase_bit;
}
// check for any stepping effect from a magnet
// - move only when the magnet opposite the cog is off
// - move in the direction of an adjacent magnet if one is on
// - do not move if both adjacent magnets are on
// momentum and timing are not accounted for ... maybe one day!
int direction = 0;
if (phases & (1 << ((fptr->phase + 1) & 3)))
direction += 1;
if (phases & (1 << ((fptr->phase + 3) & 3)))
direction -= 1;
// apply magnet step, if any
if (direction)
{
fptr->phase = MAX(0, MIN(79, fptr->phase + direction));
const int nNumTracksInImage = ImageGetNumTracks(fptr->imagehandle);
const int newtrack = (nNumTracksInImage == 0) ? 0
: MIN(nNumTracksInImage-1, fptr->phase >> 1); // (round half tracks down)
if (newtrack != fptr->track)
{
if (fptr->trackimage && fptr->trackimagedirty)
{
WriteTrack(currdrive);
}
fptr->track = newtrack;
fptr->trackimagedata = 0;
}
// Feature Request #201 Show track status
// https://github.com/AppleWin/AppleWin/issues/201
FrameDrawDiskStatus( (HDC)0 );
}
#else
// substitute alternate stepping code here to test
#endif
#if LOG_DISK_PHASES
LOG_DISK("track $%02X%s phases %d%d%d%d phase %d %s address $%4X\r\n",
fptr->phase >> 1,
(fptr->phase & 1) ? ".5" : " ",
(phases >> 3) & 1,
(phases >> 2) & 1,
(phases >> 1) & 1,
(phases >> 0) & 1,
phase,
(address & 1) ? "on " : "off",
address);
#endif
}
//===========================================================================
void DiskDestroy(void)
{
g_bSaveDiskImage = false;
RemoveDisk(DRIVE_1);
g_bSaveDiskImage = false;
RemoveDisk(DRIVE_2);
g_bSaveDiskImage = true;
}
//===========================================================================
static void __stdcall DiskEnable(WORD, WORD address, BYTE, BYTE, ULONG uExecutedCycles)
{
currdrive = address & 1;
g_aFloppyDisk[!currdrive].spinning = 0;
g_aFloppyDisk[!currdrive].writelight = 0;
CheckSpinning();
}
//===========================================================================
void DiskEject(const int iDrive)
{
if (IsDriveValid(iDrive))
{
RemoveDisk(iDrive);
}
}
//===========================================================================
// Return the file or zip name
// . Used by Property Sheet Page (Disk)
LPCTSTR DiskGetFullName(const int iDrive)
{
return g_aFloppyDisk[iDrive].fullname;
}
// Return the filename
// . Used by Drive Buttons' tooltips
LPCTSTR DiskGetFullDiskFilename(const int iDrive)
{
if (!g_aFloppyDisk[iDrive].strFilenameInZip.empty())
return g_aFloppyDisk[iDrive].strFilenameInZip.c_str();
return DiskGetFullName(iDrive);
}
static LPCTSTR DiskGetFullPathName(const int iDrive)
{
return ImageGetPathname(g_aFloppyDisk[iDrive].imagehandle);
}
// Return the imagename
// . Used by Drive Button's icons & Property Sheet Page (Save snapshot)
LPCTSTR DiskGetBaseName(const int iDrive)
{
return g_aFloppyDisk[iDrive].imagename;
}
//===========================================================================
void DiskGetLightStatus(Disk_Status_e *pDisk1Status_, Disk_Status_e *pDisk2Status_)
{
if (pDisk1Status_)
*pDisk1Status_ = GetDriveLightStatus( 0 );
if (pDisk2Status_)
*pDisk2Status_ = GetDriveLightStatus( 1 );
}
//===========================================================================
void DiskInitialize(void)
{
int loop = NUM_DRIVES;
while (loop--)
ZeroMemory(&g_aFloppyDisk[loop], sizeof(Disk_t));
TCHAR imagefilename[MAX_PATH];
_tcscpy(imagefilename,g_sProgramDir);
}
//===========================================================================
ImageError_e DiskInsert(const int iDrive, LPCTSTR pszImageFilename, const bool bForceWriteProtected, const bool bCreateIfNecessary)
{
Disk_t * fptr = &g_aFloppyDisk[iDrive];
if (fptr->imagehandle)
RemoveDisk(iDrive);
// Reset the drive's struct, but preserve the physical attributes (bug#18242: Platoon)
// . Changing the disk (in the drive) doesn't affect the drive's head etc.
{
int track = fptr->track;
int phase = fptr->phase;
ZeroMemory(fptr, sizeof(Disk_t));
fptr->track = track;
fptr->phase = phase;
}
const DWORD dwAttributes = GetFileAttributes(pszImageFilename);
if(dwAttributes == INVALID_FILE_ATTRIBUTES)
fptr->bWriteProtected = false; // Assume this is a new file to create
else
fptr->bWriteProtected = bForceWriteProtected ? true : (dwAttributes & FILE_ATTRIBUTE_READONLY);
// Check if image is being used by the other drive, and if so remove it in order so it can be swapped
{
const char* pszOtherPathname = DiskGetFullPathName(!iDrive);
char szCurrentPathname[MAX_PATH];
DWORD uNameLen = GetFullPathName(pszImageFilename, MAX_PATH, szCurrentPathname, NULL);
if (uNameLen == 0 || uNameLen >= MAX_PATH)
strcpy_s(szCurrentPathname, MAX_PATH, pszImageFilename);
if (!strcmp(pszOtherPathname, szCurrentPathname))
{
DiskEject(!iDrive);
FrameRefreshStatus(DRAW_LEDS | DRAW_BUTTON_DRIVES);
}
}
ImageError_e Error = ImageOpen(pszImageFilename,
&fptr->imagehandle,
&fptr->bWriteProtected,
bCreateIfNecessary,
fptr->strFilenameInZip);
if (Error == eIMAGE_ERROR_NONE && ImageIsMultiFileZip(fptr->imagehandle))
{
TCHAR szText[100+MAX_PATH];
wsprintf(szText, "Only the first file in a multi-file zip is supported\nUse disk image '%s' ?", fptr->strFilenameInZip.c_str());
int nRes = MessageBox(g_hFrameWindow, szText, TEXT("Multi-Zip Warning"), MB_ICONWARNING | MB_YESNO | MB_SETFOREGROUND);
if (nRes == IDNO)
{
RemoveDisk(iDrive);
Error = eIMAGE_ERROR_REJECTED_MULTI_ZIP;
}
}
if (Error == eIMAGE_ERROR_NONE)
{
GetImageTitle(pszImageFilename, fptr->imagename, fptr->fullname);
Video_ResetScreenshotCounter(fptr->imagename);
}
else
{
Video_ResetScreenshotCounter(NULL);
}
Disk_SaveLastDiskImage(iDrive);
return Error;
}
//===========================================================================
BOOL DiskIsSpinning(void)
{
return floppymotoron;
}
//===========================================================================
void DiskNotifyInvalidImage(const int iDrive, LPCTSTR pszImageFilename, const ImageError_e Error)
{
TCHAR szBuffer[MAX_PATH+128];
switch (Error)
{
case eIMAGE_ERROR_UNABLE_TO_OPEN:
case eIMAGE_ERROR_UNABLE_TO_OPEN_GZ:
case eIMAGE_ERROR_UNABLE_TO_OPEN_ZIP:
wsprintf(
szBuffer,
TEXT("Unable to open the file %s."),
pszImageFilename);
break;
case eIMAGE_ERROR_BAD_SIZE:
wsprintf(
szBuffer,
TEXT("Unable to use the file %s\nbecause the ")
TEXT("disk image is an unsupported size."),
pszImageFilename);
break;
case eIMAGE_ERROR_BAD_FILE:
wsprintf(
szBuffer,
TEXT("Unable to use the file %s\nbecause the ")
TEXT("OS can't access it."),
pszImageFilename);
break;
case eIMAGE_ERROR_UNSUPPORTED:
wsprintf(
szBuffer,
TEXT("Unable to use the file %s\nbecause the ")
TEXT("disk image format is not recognized."),
pszImageFilename);
break;
case eIMAGE_ERROR_UNSUPPORTED_HDV:
wsprintf(
szBuffer,
TEXT("Unable to use the file %s\n")
TEXT("because this UniDisk 3.5/Apple IIGS/hard-disk image is not supported.\n")
TEXT("Try inserting as a hard-disk image instead."),
pszImageFilename);
break;
case eIMAGE_ERROR_UNSUPPORTED_MULTI_ZIP:
wsprintf(
szBuffer,
TEXT("Unable to use the file %s\nbecause the ")
TEXT("first file (%s) in this multi-zip archive is not recognized.\n")
TEXT("Try unzipping and using the disk images directly.\n"),
pszImageFilename,
g_aFloppyDisk[iDrive].strFilenameInZip.c_str());
break;
case eIMAGE_ERROR_GZ:
case eIMAGE_ERROR_ZIP:
wsprintf(
szBuffer,
TEXT("Unable to use the compressed file %s\nbecause the ")
TEXT("compressed disk image is corrupt/unsupported."),
pszImageFilename);
break;
case eIMAGE_ERROR_FAILED_TO_GET_PATHNAME:
wsprintf(
szBuffer,
TEXT("Unable to GetFullPathName() for the file: %s."),
pszImageFilename);
break;
default:
// IGNORE OTHER ERRORS SILENTLY
return;
}
MessageBox(
g_hFrameWindow,
szBuffer,
g_pAppTitle,
MB_ICONEXCLAMATION | MB_SETFOREGROUND);
}
//===========================================================================
bool DiskGetProtect(const int iDrive)
{
if (IsDriveValid(iDrive))
{
Disk_t *pFloppy = &g_aFloppyDisk[ iDrive ];
if (pFloppy->bWriteProtected)
return true;
}
return false;
}
//===========================================================================
void DiskSetProtect(const int iDrive, const bool bWriteProtect)
{
if (IsDriveValid( iDrive ))
{
Disk_t *pFloppy = &g_aFloppyDisk[ iDrive ];
pFloppy->bWriteProtected = bWriteProtect;
}
}
//===========================================================================
bool Disk_ImageIsWriteProtected(const int iDrive)
{
if (!IsDriveValid(iDrive))
return true;
Disk_t *pFloppy = &g_aFloppyDisk[iDrive];
return ImageIsWriteProtected(pFloppy->imagehandle);
}
//===========================================================================
bool Disk_IsDriveEmpty(const int iDrive)
{
if (!IsDriveValid(iDrive))
return true;
Disk_t *pFloppy = &g_aFloppyDisk[iDrive];
return pFloppy->imagehandle == NULL;
}
//===========================================================================
static void __stdcall DiskReadWrite(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft)
{
/* floppyloadmode = 0; */
Disk_t * fptr = &g_aFloppyDisk[currdrive];
diskaccessed = 1;
if (!fptr->trackimagedata && fptr->imagehandle)
ReadTrack(currdrive);
if (!fptr->trackimagedata)
{
floppylatch = 0xFF;
return;
}
if (!floppywritemode)
{
floppylatch = *(fptr->trackimage + fptr->byte);
#if LOG_DISK_NIBBLES
LOG_DISK("read %4X = %2X\r\n", fptr->byte, floppylatch);
#endif
}
else if ((floppylatch & 0x80) && !fptr->bWriteProtected) // && floppywritemode
{
*(fptr->trackimage + fptr->byte) = floppylatch;
fptr->trackimagedirty = 1;
}
if (++fptr->byte >= fptr->nibbles)
fptr->byte = 0;
// Feature Request #201 Show track status
// https://github.com/AppleWin/AppleWin/issues/201
// NB. Prevent flooding of forcing UI to redraw!!!
if( ((fptr->byte) & 0xFF) == 0 )
FrameDrawDiskStatus( (HDC)0 );
}
//===========================================================================
void DiskReset(void)
{
floppymotoron = 0;
phases = 0;
}
//===========================================================================
static bool DiskSelectImage(const int iDrive, LPCSTR pszFilename)
{
TCHAR directory[MAX_PATH] = TEXT("");
TCHAR filename[MAX_PATH] = TEXT("");
TCHAR title[40];
strcpy(filename, pszFilename);
RegLoadString(TEXT(REG_PREFS), REGVALUE_PREF_START_DIR, 1, directory, MAX_PATH);
_tcscpy(title, TEXT("Select Disk Image For Drive "));
_tcscat(title, iDrive ? TEXT("2") : TEXT("1"));
_ASSERT(sizeof(OPENFILENAME) == sizeof(OPENFILENAME_NT4)); // Required for Win98/ME support (selected by _WIN32_WINNT=0x0400 in stdafx.h)
OPENFILENAME ofn;
ZeroMemory(&ofn,sizeof(OPENFILENAME));
ofn.lStructSize = sizeof(OPENFILENAME);
ofn.hwndOwner = g_hFrameWindow;
ofn.hInstance = g_hInstance;
ofn.lpstrFilter = TEXT("All Images\0*.bin;*.do;*.dsk;*.nib;*.po;*.gz;*.zip;*.2mg;*.2img;*.iie;*.apl\0")
TEXT("Disk Images (*.bin,*.do,*.dsk,*.nib,*.po,*.gz,*.zip,*.2mg,*.2img,*.iie)\0*.bin;*.do;*.dsk;*.nib;*.po;*.gz;*.zip;*.2mg;*.2img;*.iie\0")
TEXT("All Files\0*.*\0");
ofn.lpstrFile = filename;
ofn.nMaxFile = MAX_PATH;
ofn.lpstrInitialDir = directory;
ofn.Flags = OFN_PATHMUSTEXIST;
ofn.lpstrTitle = title;
bool bRes = false;
if (GetOpenFileName(&ofn))
{
if ((!ofn.nFileExtension) || !filename[ofn.nFileExtension])
_tcscat(filename,TEXT(".dsk"));
ImageError_e Error = DiskInsert(iDrive, filename, ofn.Flags & OFN_READONLY, IMAGE_CREATE);
if (Error == eIMAGE_ERROR_NONE)
{
bRes = true;
}
else
{
DiskNotifyInvalidImage(iDrive, filename, Error);
}
}
return bRes;
}
//===========================================================================
void DiskSelect(const int iDrive)
{
DiskSelectImage(iDrive, TEXT(""));
}
//===========================================================================
static void __stdcall DiskLoadWriteProtect(WORD, WORD, BYTE write, BYTE value, ULONG) {
/* floppyloadmode = 1; */
if (!write)
{
if (floppymotoron && !floppywritemode)
{
// phase 1 on also forces write protect in the Disk II drive (UTA2E page 9-7) but we don't implement that
if (g_aFloppyDisk[currdrive].bWriteProtected)
floppylatch |= 0x80;
else
floppylatch &= 0x7F;
}
}
}
//===========================================================================
static void __stdcall DiskSetReadMode(WORD, WORD, BYTE, BYTE, ULONG)
{
floppywritemode = 0;
}
//===========================================================================
static void __stdcall DiskSetWriteMode(WORD, WORD, BYTE, BYTE, ULONG uExecutedCycles)
{
floppywritemode = 1;
BOOL modechange = !g_aFloppyDisk[currdrive].writelight;
g_aFloppyDisk[currdrive].writelight = 20000;
if (modechange)
{
//FrameRefreshStatus(DRAW_LEDS);
FrameDrawDiskLEDS( (HDC)0 );
}
}
//===========================================================================
void DiskUpdatePosition(DWORD cycles)
{
int loop = NUM_DRIVES;
while (loop--)
{
Disk_t * fptr = &g_aFloppyDisk[loop];
if (fptr->spinning && !floppymotoron) {
if (!(fptr->spinning -= MIN(fptr->spinning, (cycles >> 6))))
{
// FrameRefreshStatus(DRAW_LEDS);
FrameDrawDiskLEDS( (HDC)0 );
FrameDrawDiskStatus( (HDC)0 );
}
}
if (floppywritemode && (currdrive == loop) && fptr->spinning)
{
fptr->writelight = 20000;
}
else if (fptr->writelight)
{
if (!(fptr->writelight -= MIN(fptr->writelight, (cycles >> 6))))
{
//FrameRefreshStatus(DRAW_LEDS);
FrameDrawDiskLEDS( (HDC)0 );
FrameDrawDiskStatus( (HDC)0 );
}
}
if ((!enhancedisk) && (!diskaccessed) && fptr->spinning)
{
fptr->byte += (cycles >> 5);
if (fptr->byte >= fptr->nibbles)
fptr->byte -= fptr->nibbles;
}
}
diskaccessed = 0;
}
//===========================================================================
bool DiskDriveSwap(void)
{
// Refuse to swap if either Disk][ is active
if(g_aFloppyDisk[0].spinning || g_aFloppyDisk[1].spinning)
return false;
// Swap disks between drives
// . NB. We swap trackimage ptrs (so don't need to swap the buffers' data)
// . TODO: Consider array of Pointers: Disk_t* g_aDrive[]
std::swap(g_aFloppyDisk[0], g_aFloppyDisk[1]);
Disk_SaveLastDiskImage(DRIVE_1);
Disk_SaveLastDiskImage(DRIVE_2);
FrameRefreshStatus(DRAW_LEDS | DRAW_BUTTON_DRIVES, false );
return true;
}
//===========================================================================
static BYTE __stdcall Disk_IORead(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft);
static BYTE __stdcall Disk_IOWrite(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft);
// TODO: LoadRom_Disk_Floppy()
void DiskLoadRom(LPBYTE pCxRomPeripheral, UINT uSlot)
{
const UINT DISK2_FW_SIZE = APPLE_SLOT_SIZE;
HRSRC hResInfo = FindResource(NULL, MAKEINTRESOURCE(IDR_DISK2_FW), "FIRMWARE");
if(hResInfo == NULL)
return;
DWORD dwResSize = SizeofResource(NULL, hResInfo);
if(dwResSize != DISK2_FW_SIZE)
return;
HGLOBAL hResData = LoadResource(NULL, hResInfo);
if(hResData == NULL)
return;
BYTE* pData = (BYTE*) LockResource(hResData); // NB. Don't need to unlock resource
if(pData == NULL)
return;
memcpy(pCxRomPeripheral + uSlot*APPLE_SLOT_SIZE, pData, DISK2_FW_SIZE);
// Note: We used to disable the track stepping delay in the Disk II controller firmware by
// patching $C64C with $A9,$00,$EA. Now not doing this since:
// . Authentic Speed should be authentic
// . Enhanced Speed runs emulation unthrottled, so removing the delay has negligible effect
// . Patching the firmware breaks the ADC checksum used by "The CIA Files" (Tricky Dick)
// . In this case we can patch to compensate for an ADC or EOR checksum but not both (nickw)
RegisterIoHandler(uSlot, Disk_IORead, Disk_IOWrite, NULL, NULL, NULL, NULL);
g_uSlot = uSlot;
}
//===========================================================================
static BYTE __stdcall Disk_IORead(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft)
{
switch (addr & 0xF)
{
case 0x0: DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x1: DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x2: DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x3: DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x4: DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x5: DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x6: DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x7: DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x8: DiskControlMotor(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x9: DiskControlMotor(pc, addr, bWrite, d, nCyclesLeft); break;
case 0xA: DiskEnable(pc, addr, bWrite, d, nCyclesLeft); break;
case 0xB: DiskEnable(pc, addr, bWrite, d, nCyclesLeft); break;
case 0xC: DiskReadWrite(pc, addr, bWrite, d, nCyclesLeft); break;
case 0xD: DiskLoadWriteProtect(pc, addr, bWrite, d, nCyclesLeft); break;
case 0xE: DiskSetReadMode(pc, addr, bWrite, d, nCyclesLeft); break;
case 0xF: DiskSetWriteMode(pc, addr, bWrite, d, nCyclesLeft); break;
}
// only even addresses return the latch (UTA2E Table 9.1)
if (!(addr & 1))
return floppylatch;
else
return MemReadFloatingBus(nCyclesLeft);
}
static BYTE __stdcall Disk_IOWrite(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft)
{
switch (addr & 0xF)
{
case 0x0: DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x1: DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x2: DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x3: DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x4: DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x5: DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x6: DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x7: DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x8: DiskControlMotor(pc, addr, bWrite, d, nCyclesLeft); break;
case 0x9: DiskControlMotor(pc, addr, bWrite, d, nCyclesLeft); break;
case 0xA: DiskEnable(pc, addr, bWrite, d, nCyclesLeft); break;
case 0xB: DiskEnable(pc, addr, bWrite, d, nCyclesLeft); break;
case 0xC: DiskReadWrite(pc, addr, bWrite, d, nCyclesLeft); break;
case 0xD: DiskLoadWriteProtect(pc, addr, bWrite, d, nCyclesLeft); break;
case 0xE: DiskSetReadMode(pc, addr, bWrite, d, nCyclesLeft); break;
case 0xF: DiskSetWriteMode(pc, addr, bWrite, d, nCyclesLeft); break;
}
// any address writes the latch via sequencer LD command (74LS323 datasheet)
if (floppywritemode /* && floppyloadmode */)
{
floppylatch = d;
}
return 0;
}
//===========================================================================
int DiskSetSnapshot_v1(const SS_CARD_DISK2* const pSS)
{
if(pSS->Hdr.UnitHdr.hdr.v1.dwVersion > MAKE_VERSION(1,0,0,2))
return -1;
phases = pSS->phases;
currdrive = pSS->currdrive;
diskaccessed = pSS->diskaccessed;
enhancedisk = pSS->enhancedisk;
floppylatch = pSS->floppylatch;
floppymotoron = pSS->floppymotoron;
floppywritemode = pSS->floppywritemode;
// Eject all disks first in case Drive-2 contains disk to be inserted into Drive-1
for(UINT i=0; i<NUM_DRIVES; i++)
{
DiskEject(i); // Remove any disk & update Registry to reflect empty drive
ZeroMemory(&g_aFloppyDisk[i], sizeof(Disk_t));
}
for(UINT i=0; i<NUM_DRIVES; i++)
{
if(pSS->Unit[i].szFileName[0] == 0x00)
continue;
DWORD dwAttributes = GetFileAttributes(pSS->Unit[i].szFileName);
if(dwAttributes == INVALID_FILE_ATTRIBUTES)
{
// Get user to browse for file
DiskSelectImage(i, pSS->Unit[i].szFileName);
dwAttributes = GetFileAttributes(pSS->Unit[i].szFileName);
}
bool bImageError = false;
if(dwAttributes != INVALID_FILE_ATTRIBUTES)
{
if(DiskInsert(i, pSS->Unit[i].szFileName, dwAttributes & FILE_ATTRIBUTE_READONLY, IMAGE_DONT_CREATE) != eIMAGE_ERROR_NONE)
bImageError = true;
// DiskInsert() sets up:
// . imagename
// . fullname
// . writeprotected
}
//
// strcpy(g_aFloppyDisk[i].fullname, pSS->Unit[i].szFileName);
g_aFloppyDisk[i].track = pSS->Unit[i].track;
g_aFloppyDisk[i].phase = pSS->Unit[i].phase;
g_aFloppyDisk[i].byte = pSS->Unit[i].byte;
// g_aFloppyDisk[i].writeprotected = pSS->Unit[i].writeprotected;
g_aFloppyDisk[i].trackimagedata = pSS->Unit[i].trackimagedata;
g_aFloppyDisk[i].trackimagedirty = pSS->Unit[i].trackimagedirty;
g_aFloppyDisk[i].spinning = pSS->Unit[i].spinning;
g_aFloppyDisk[i].writelight = pSS->Unit[i].writelight;
g_aFloppyDisk[i].nibbles = pSS->Unit[i].nibbles;
//
if(!bImageError)
{
if((g_aFloppyDisk[i].trackimage == NULL) && g_aFloppyDisk[i].nibbles)
AllocTrack(i);
if(g_aFloppyDisk[i].trackimage == NULL)
bImageError = true;
else
memcpy(g_aFloppyDisk[i].trackimage, pSS->Unit[i].nTrack, NIBBLES_PER_TRACK);
}
if(bImageError)
{
g_aFloppyDisk[i].trackimagedata = 0;
g_aFloppyDisk[i].trackimagedirty = 0;
g_aFloppyDisk[i].nibbles = 0;
}
}
FrameRefreshStatus(DRAW_LEDS | DRAW_BUTTON_DRIVES);
return 0;
}
//===========================================================================
#define SS_YAML_VALUE_CARD_DISK2 "Disk]["
#define SS_YAML_KEY_PHASES "Phases"
#define SS_YAML_KEY_CURRENT_DRIVE "Current Drive"
#define SS_YAML_KEY_DISK_ACCESSED "Disk Accessed"
#define SS_YAML_KEY_ENHANCE_DISK "Enhance Disk"
#define SS_YAML_KEY_FLOPPY_LATCH "Floppy Latch"
#define SS_YAML_KEY_FLOPPY_MOTOR_ON "Floppy Motor On"
#define SS_YAML_KEY_FLOPPY_WRITE_MODE "Floppy Write Mode"
#define SS_YAML_KEY_DISK2UNIT "Disk][ Unit"
#define SS_YAML_KEY_FILENAME "Filename"
#define SS_YAML_KEY_TRACK "Track"
#define SS_YAML_KEY_PHASE "Phase"
#define SS_YAML_KEY_BYTE "Byte"
#define SS_YAML_KEY_WRITE_PROTECTED "Write Protected"
#define SS_YAML_KEY_SPINNING "Spinning"
#define SS_YAML_KEY_WRITE_LIGHT "Write Light"
#define SS_YAML_KEY_NIBBLES "Nibbles"
#define SS_YAML_KEY_TRACK_IMAGE_DATA "Track Image Data"
#define SS_YAML_KEY_TRACK_IMAGE_DIRTY "Track Image Dirty"
#define SS_YAML_KEY_TRACK_IMAGE "Track Image"
std::string DiskGetSnapshotCardName(void)
{
static const std::string name(SS_YAML_VALUE_CARD_DISK2);
return name;
}
static void DiskSaveSnapshotDisk2Unit(YamlSaveHelper& yamlSaveHelper, UINT unit)
{
YamlSaveHelper::Label label(yamlSaveHelper, "%s%d:\n", SS_YAML_KEY_DISK2UNIT, unit);
yamlSaveHelper.Save("%s: %s\n", SS_YAML_KEY_FILENAME, yamlSaveHelper.GetSaveString(g_aFloppyDisk[unit].fullname).c_str());
yamlSaveHelper.Save("%s: %d\n", SS_YAML_KEY_TRACK, g_aFloppyDisk[unit].track);
yamlSaveHelper.Save("%s: %d\n", SS_YAML_KEY_PHASE, g_aFloppyDisk[unit].phase);
yamlSaveHelper.Save("%s: 0x%04X\n", SS_YAML_KEY_BYTE, g_aFloppyDisk[unit].byte);
yamlSaveHelper.Save("%s: %d\n", SS_YAML_KEY_WRITE_PROTECTED, g_aFloppyDisk[unit].bWriteProtected);
yamlSaveHelper.Save("%s: %d\n", SS_YAML_KEY_SPINNING, g_aFloppyDisk[unit].spinning);
yamlSaveHelper.Save("%s: %d\n", SS_YAML_KEY_WRITE_LIGHT, g_aFloppyDisk[unit].writelight);
yamlSaveHelper.Save("%s: 0x%04X\n", SS_YAML_KEY_NIBBLES, g_aFloppyDisk[unit].nibbles);
yamlSaveHelper.Save("%s: %d\n", SS_YAML_KEY_TRACK_IMAGE_DATA, g_aFloppyDisk[unit].trackimagedata);
yamlSaveHelper.Save("%s: %d\n", SS_YAML_KEY_TRACK_IMAGE_DIRTY, g_aFloppyDisk[unit].trackimagedirty);
if (g_aFloppyDisk[unit].trackimage)
{
YamlSaveHelper::Label image(yamlSaveHelper, "%s:\n", SS_YAML_KEY_TRACK_IMAGE);
yamlSaveHelper.SaveMapValueMemory(g_aFloppyDisk[unit].trackimage, NIBBLES_PER_TRACK);
}
}
void DiskSaveSnapshot(class YamlSaveHelper& yamlSaveHelper)
{
YamlSaveHelper::Slot slot(yamlSaveHelper, DiskGetSnapshotCardName(), g_uSlot, 1);
YamlSaveHelper::Label state(yamlSaveHelper, "%s:\n", SS_YAML_KEY_STATE);
yamlSaveHelper.Save("%s: 0x%1X\n", SS_YAML_KEY_PHASES, phases);
yamlSaveHelper.Save("%s: %d\n", SS_YAML_KEY_CURRENT_DRIVE, currdrive);
yamlSaveHelper.Save("%s: %d\n", SS_YAML_KEY_DISK_ACCESSED, diskaccessed);
yamlSaveHelper.Save("%s: %d\n", SS_YAML_KEY_ENHANCE_DISK, enhancedisk);
yamlSaveHelper.Save("%s: %d\n", SS_YAML_KEY_FLOPPY_LATCH, floppylatch);
yamlSaveHelper.Save("%s: %d\n", SS_YAML_KEY_FLOPPY_MOTOR_ON, floppymotoron);
yamlSaveHelper.Save("%s: %d\n", SS_YAML_KEY_FLOPPY_WRITE_MODE, floppywritemode);
DiskSaveSnapshotDisk2Unit(yamlSaveHelper, DRIVE_1);
DiskSaveSnapshotDisk2Unit(yamlSaveHelper, DRIVE_2);
}
static void DiskLoadSnapshotDriveUnit(YamlLoadHelper& yamlLoadHelper, UINT unit)
{
std::string disk2UnitName = std::string(SS_YAML_KEY_DISK2UNIT) + (unit == DRIVE_1 ? std::string("0") : std::string("1"));
if (!yamlLoadHelper.GetSubMap(disk2UnitName))
throw std::string("Card: Expected key: ") + disk2UnitName;
bool bImageError = false;
std::string filename = yamlLoadHelper.GetMapValueSTRING(SS_YAML_KEY_FILENAME).c_str();
if (!filename.empty())
{
DWORD dwAttributes = GetFileAttributes(filename.c_str());
if(dwAttributes == INVALID_FILE_ATTRIBUTES)
{
// Get user to browse for file
DiskSelectImage(unit, filename.c_str());
dwAttributes = GetFileAttributes(filename.c_str());
}
bImageError = (dwAttributes == INVALID_FILE_ATTRIBUTES);
if (!bImageError)
{
if(DiskInsert(unit, filename.c_str(), dwAttributes & FILE_ATTRIBUTE_READONLY, IMAGE_DONT_CREATE) != eIMAGE_ERROR_NONE)
bImageError = true;
// DiskInsert() zeros g_aFloppyDisk[unit], then sets up:
// . imagename
// . fullname
// . writeprotected
}
}
g_aFloppyDisk[unit].track = yamlLoadHelper.GetMapValueUINT(SS_YAML_KEY_TRACK);
g_aFloppyDisk[unit].phase = yamlLoadHelper.GetMapValueUINT(SS_YAML_KEY_PHASE);
g_aFloppyDisk[unit].byte = yamlLoadHelper.GetMapValueUINT(SS_YAML_KEY_BYTE);
yamlLoadHelper.GetMapValueUINT(SS_YAML_KEY_WRITE_PROTECTED); // Consume
g_aFloppyDisk[unit].spinning = yamlLoadHelper.GetMapValueUINT(SS_YAML_KEY_SPINNING);
g_aFloppyDisk[unit].writelight = yamlLoadHelper.GetMapValueUINT(SS_YAML_KEY_WRITE_LIGHT);
g_aFloppyDisk[unit].nibbles = yamlLoadHelper.GetMapValueUINT(SS_YAML_KEY_NIBBLES);
g_aFloppyDisk[unit].trackimagedata = yamlLoadHelper.GetMapValueUINT(SS_YAML_KEY_TRACK_IMAGE_DATA);
g_aFloppyDisk[unit].trackimagedirty = yamlLoadHelper.GetMapValueUINT(SS_YAML_KEY_TRACK_IMAGE_DIRTY);
std::auto_ptr<BYTE> pTrack( new BYTE [NIBBLES_PER_TRACK] );
memset(pTrack.get(), 0, NIBBLES_PER_TRACK);
if (yamlLoadHelper.GetSubMap(SS_YAML_KEY_TRACK_IMAGE))
{
yamlLoadHelper.GetMapValueMemory(pTrack.get(), NIBBLES_PER_TRACK);
yamlLoadHelper.PopMap();
}
yamlLoadHelper.PopMap();
//
if (!filename.empty() && !bImageError)
{
if ((g_aFloppyDisk[unit].trackimage == NULL) && g_aFloppyDisk[unit].nibbles)
AllocTrack(unit);
if (g_aFloppyDisk[unit].trackimage == NULL)
bImageError = true;
else
memcpy(g_aFloppyDisk[unit].trackimage, pTrack.get(), NIBBLES_PER_TRACK);
}
if (bImageError)
{
g_aFloppyDisk[unit].trackimagedata = 0;
g_aFloppyDisk[unit].trackimagedirty = 0;
g_aFloppyDisk[unit].nibbles = 0;
}
}
bool DiskLoadSnapshot(class YamlLoadHelper& yamlLoadHelper, UINT slot, UINT version)
{
if (slot != 6) // fixme
throw std::string("Card: wrong slot");
if (version != 1)
throw std::string("Card: wrong version");
phases = yamlLoadHelper.GetMapValueUINT(SS_YAML_KEY_PHASES);
currdrive = yamlLoadHelper.GetMapValueUINT(SS_YAML_KEY_CURRENT_DRIVE);
diskaccessed = yamlLoadHelper.GetMapValueUINT(SS_YAML_KEY_DISK_ACCESSED);
enhancedisk = yamlLoadHelper.GetMapValueUINT(SS_YAML_KEY_ENHANCE_DISK);
floppylatch = yamlLoadHelper.GetMapValueUINT(SS_YAML_KEY_FLOPPY_LATCH);
floppymotoron = yamlLoadHelper.GetMapValueUINT(SS_YAML_KEY_FLOPPY_MOTOR_ON);
floppywritemode = yamlLoadHelper.GetMapValueUINT(SS_YAML_KEY_FLOPPY_WRITE_MODE);
// Eject all disks first in case Drive-2 contains disk to be inserted into Drive-1
for(UINT i=0; i<NUM_DRIVES; i++)
{
DiskEject(i); // Remove any disk & update Registry to reflect empty drive
ZeroMemory(&g_aFloppyDisk[i], sizeof(Disk_t));
}
DiskLoadSnapshotDriveUnit(yamlLoadHelper, DRIVE_1);
DiskLoadSnapshotDriveUnit(yamlLoadHelper, DRIVE_2);
FrameRefreshStatus(DRAW_LEDS | DRAW_BUTTON_DRIVES);
return true;
}
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