linapple-pie/src/Disk.cpp

1154 lines
35 KiB
C++

/*
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) 2006-2007, Tom Charlesworth, Michael Pohoreski
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
*/
/* Adaptation for SDL and POSIX (l) by beom beotiger, Nov-Dec 2007 */
/* AND March 2012 AD */
#include "stdafx.h"
#include "wwrapper.h"
#include "ftpparse.h"
#include "DiskFTP.h"
#ifndef _WIN32
#include <sys/stat.h>
#endif
// for DiskUnGzip
#include <zlib.h>
// for DiskUnZip
#include <zip.h>
//#pragma hdrstop
//#include "resource.h"
char Disk2_rom[] =
"\xA2\x20\xA0\x00\xA2\x03\x86\x3C\x8A\x0A\x24\x3C\xF0\x10\x05\x3C"
"\x49\xFF\x29\x7E\xB0\x08\x4A\xD0\xFB\x98\x9D\x56\x03\xC8\xE8\x10"
"\xE5\x20\x58\xFF\xBA\xBD\x00\x01\x0A\x0A\x0A\x0A\x85\x2B\xAA\xBD"
"\x8E\xC0\xBD\x8C\xC0\xBD\x8A\xC0\xBD\x89\xC0\xA0\x50\xBD\x80\xC0"
"\x98\x29\x03\x0A\x05\x2B\xAA\xBD\x81\xC0\xA9\x56\x20\xA8\xFC\x88"
"\x10\xEB\x85\x26\x85\x3D\x85\x41\xA9\x08\x85\x27\x18\x08\xBD\x8C"
"\xC0\x10\xFB\x49\xD5\xD0\xF7\xBD\x8C\xC0\x10\xFB\xC9\xAA\xD0\xF3"
"\xEA\xBD\x8C\xC0\x10\xFB\xC9\x96\xF0\x09\x28\x90\xDF\x49\xAD\xF0"
"\x25\xD0\xD9\xA0\x03\x85\x40\xBD\x8C\xC0\x10\xFB\x2A\x85\x3C\xBD"
"\x8C\xC0\x10\xFB\x25\x3C\x88\xD0\xEC\x28\xC5\x3D\xD0\xBE\xA5\x40"
"\xC5\x41\xD0\xB8\xB0\xB7\xA0\x56\x84\x3C\xBC\x8C\xC0\x10\xFB\x59"
"\xD6\x02\xA4\x3C\x88\x99\x00\x03\xD0\xEE\x84\x3C\xBC\x8C\xC0\x10"
"\xFB\x59\xD6\x02\xA4\x3C\x91\x26\xC8\xD0\xEF\xBC\x8C\xC0\x10\xFB"
"\x59\xD6\x02\xD0\x87\xA0\x00\xA2\x56\xCA\x30\xFB\xB1\x26\x5E\x00"
"\x03\x2A\x5E\x00\x03\x2A\x91\x26\xC8\xD0\xEE\xE6\x27\xE6\x3D\xA5"
"\x3D\xCD\x00\x08\xA6\x2B\x90\xDB\x4C\x01\x08\x00\x00\x00\x00\x00"
;
static BYTE DiskControlMotor (WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft);
static BYTE DiskControlStepper (WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft);
static BYTE DiskEnable (WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft);
static BYTE DiskReadWrite (WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft);
static BYTE DiskSetLatchValue (WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft);
static BYTE DiskSetReadMode (WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft);
static BYTE DiskSetWriteMode (WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft);
#define LOG_DISK_ENABLED 1
// __VA_ARGS__ not supported on MSVC++ .NET 7.x
#if (LOG_DISK_ENABLED) && !defined(_VC71)
#define LOG_DISK(format, ...) LOG(format, __VA_ARGS__)
#else
#define LOG_DISK(...)
#endif
// Public _________________________________________________________________________________________
BOOL enhancedisk = 1;
// Private ________________________________________________________________________________________
const int MAX_DISK_IMAGE_NAME = 15;
const int MAX_DISK_FULL_NAME = MAX_PATH;
struct Disk_t
{
TCHAR imagename[ MAX_DISK_IMAGE_NAME + 1 ];
TCHAR fullname [ MAX_DISK_FULL_NAME + 1 ];
HIMAGE imagehandle;
int track;
LPBYTE trackimage;
int phase;
int byte;
BOOL writeprotected;
BOOL trackimagedata;
BOOL trackimagedirty;
DWORD spinning;
DWORD writelight;
int nibbles;
};
static WORD currdrive = 0;
static BOOL diskaccessed = 0;
static Disk_t g_aFloppyDisk[DRIVES];
static BYTE floppylatch = 0;
static BOOL floppymotoron = 0;
static BOOL floppywritemode = 0;
static WORD phases; // state bits for stepper magnet phases 0 - 3
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);
//===========================================================================
void CheckSpinning () {
DWORD modechange = (floppymotoron && !g_aFloppyDisk[currdrive].spinning);
if (floppymotoron)
g_aFloppyDisk[currdrive].spinning = 20000;
if (modechange)
FrameRefreshStatus(DRAW_LEDS);
}
//===========================================================================
Disk_Status_e GetDriveLightStatus( const int iDrive )
{
if (IsDriveValid( iDrive ))
{
Disk_t *pFloppy = & g_aFloppyDisk[ iDrive ];
if (pFloppy->spinning)
{
/*if (pFloppy->writeprotected)
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;
}
//===========================================================================
char *GetImageTitle (LPCTSTR imagefilename, Disk_t * fptr)
{// returns image title
TCHAR imagetitle[ MAX_DISK_FULL_NAME+1 ];
LPCTSTR startpos = imagefilename;
// imagetitle = <FILENAME.EXT>
if (_tcsrchr(startpos,FILE_SEPARATOR))
startpos = _tcsrchr(startpos,FILE_SEPARATOR)+1;
_tcsncpy(imagetitle,startpos,MAX_DISK_FULL_NAME);
imagetitle[MAX_DISK_FULL_NAME] = 0;
// if imagetitle contains a lowercase char, then found=1 (why?)
BOOL found = 0;
int loop = 0;
while (imagetitle[loop] && !found)
{
if (IsCharLower(imagetitle[loop]))
found = 1;
else
loop++;
}
if ((!found) && (loop > 2))
CharLowerBuff(imagetitle+1,_tcslen(imagetitle+1)); // to lower case?
// fptr->fullname = <FILENAME.EXT>
_tcsncpy( fptr->fullname, /*imagetitle*/imagefilename, MAX_DISK_FULL_NAME );
fptr->fullname[ MAX_DISK_FULL_NAME ] = 0;
if (imagetitle[0])
{
LPTSTR dot = imagetitle;
if (_tcsrchr(dot,TEXT('.')))
dot = _tcsrchr(dot,TEXT('.'));
if (dot > imagetitle)
*dot = 0;
}
// fptr->imagename = <FILENAME> (ie. no extension)
_tcsncpy( fptr->imagename, imagetitle, MAX_DISK_IMAGE_NAME );
fptr->imagename[ MAX_DISK_IMAGE_NAME ] = 0;
return fptr->imagename; // return it
}
//===========================================================================
bool IsDriveValid( const int iDrive )
{
if (iDrive < 0)
return false;
if (iDrive >= DRIVES)
return false;
return true;
}
//===========================================================================
static void AllocTrack(int drive)
{
Disk_t * fptr = &g_aFloppyDisk[drive];
fptr->trackimage = (LPBYTE)VirtualAlloc(NULL,NIBBLES_PER_TRACK,MEM_COMMIT,PAGE_READWRITE);
}
//===========================================================================
static void ReadTrack (int iDrive)
{
if (! IsDriveValid( iDrive ))
return;
Disk_t *pFloppy = &g_aFloppyDisk[ iDrive ];
if (pFloppy->track >= TRACKS)
{
pFloppy->trackimagedata = 0;
return;
}
if (! pFloppy->trackimage)
AllocTrack( iDrive );
if (pFloppy->trackimage && pFloppy->imagehandle)
{
LOG_DISK("read track %2X%s\r", pFloppy->track, (pFloppy->phase & 1) ? ".5" : "");
ImageReadTrack(
pFloppy->imagehandle,
pFloppy->track,
pFloppy->phase,
pFloppy->trackimage,
&pFloppy->nibbles);
pFloppy->byte = 0;
pFloppy->trackimagedata = (pFloppy->nibbles != 0);
}
}
//===========================================================================
static void RemoveDisk (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 );
}
//===========================================================================
static void WriteTrack (int iDrive)
{
Disk_t *pFloppy = &g_aFloppyDisk[ iDrive ];
if (pFloppy->track >= TRACKS)
return;
if (pFloppy->writeprotected)
return;
if (pFloppy->trackimage && pFloppy->imagehandle)
ImageWriteTrack(
pFloppy->imagehandle,
pFloppy->track,
pFloppy->phase,
pFloppy->trackimage,
pFloppy->nibbles );
pFloppy->trackimagedirty = 0;
}
//
// ----- ALL GLOBALLY ACCESSIBLE FUNCTIONS ARE BELOW THIS LINE -----
//
//===========================================================================
void DiskBoot () {
// 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 BYTE DiskControlMotor (WORD, WORD address, BYTE, BYTE, ULONG) {
floppymotoron = address & 1;
CheckSpinning();
return MemReturnRandomData(1);
}
//===========================================================================
static BYTE DiskControlStepper (WORD, WORD address, BYTE, BYTE, ULONG)
{
Disk_t * fptr = &g_aFloppyDisk[currdrive];
int phase = (address >> 1) & 3;
int phase_bit = (1 << phase);
// update the magnet states
if (address & 1)
{
// phase on
phases |= phase_bit;
LOG_DISK("track %02X phases %X phase %d on address $C0E%X\r", fptr->phase, phases, phase, address & 0xF);
}
else
{
// phase off
phases &= ~phase_bit;
LOG_DISK("track %02X phases %X phase %d off address $C0E%X\r", fptr->phase, phases, phase, address & 0xF);
}
// 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));
int newtrack = MIN(TRACKS-1, fptr->phase >> 1); // (round half tracks down)
LOG_DISK("newtrack %2X%s\r", newtrack, (fptr->phase & 1) ? ".5" : "");
if (newtrack != fptr->track)
{
if (fptr->trackimage && fptr->trackimagedirty)
{
WriteTrack(currdrive);
}
fptr->track = newtrack;
fptr->trackimagedata = 0;
}
}
return (address == 0xE0) ? 0xFF : MemReturnRandomData(1);
}
//===========================================================================
void DiskDestroy ()
{
RemoveDisk(0);
RemoveDisk(1);
unlink("drive0.dsk"); // delete temporary ungzipped (unzipped)images
unlink("drive1.dsk");
}
//===========================================================================
static BYTE DiskEnable (WORD, WORD address, BYTE, BYTE, ULONG) {
currdrive = address & 1;
g_aFloppyDisk[!currdrive].spinning = 0;
g_aFloppyDisk[!currdrive].writelight = 0;
CheckSpinning();
return 0;
}
//===========================================================================
void DiskEject( const int iDrive )
{
if (IsDriveValid( iDrive ))
{
RemoveDisk( iDrive );
}
}
//===========================================================================
LPCTSTR DiskGetFullName (int drive) {
return g_aFloppyDisk[drive].fullname;
}
//===========================================================================
void DiskGetLightStatus (int *pDisk1Status_, int *pDisk2Status_)
{
// *drive1 = g_aFloppyDisk[0].spinning ? g_aFloppyDisk[0].writelight ? 2 : 1 : 0;
// *drive2 = g_aFloppyDisk[1].spinning ? g_aFloppyDisk[1].writelight ? 2 : 1 : 0;
if (pDisk1Status_)
*pDisk1Status_ = GetDriveLightStatus( 0 );
if (pDisk2Status_)
*pDisk2Status_ = GetDriveLightStatus( 1 );
}
//===========================================================================
LPCTSTR DiskGetName (int drive) {
return g_aFloppyDisk[drive].imagename;
}
//===========================================================================
BYTE Disk_IORead(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft);
BYTE Disk_IOWrite(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft);
void DiskInitialize ()
{
int loop = DRIVES;
while (loop--)
ZeroMemory(&g_aFloppyDisk[loop],sizeof(Disk_t ));
/* TCHAR imagefilename[MAX_PATH];
_tcscpy(imagefilename,g_sProgramDir);
_tcscat(imagefilename,TEXT("MASTER.DSK")); // TODO: Should remember last disk by user*/
/*#define MASTER_DISK "Master.dsk"
DiskInsert(0, MASTER_DISK, 0, 0);*/
}
//===========================================================================
////////////////////////// Unzip .gz file to drive0.dsk or drive1.dsk (set in fname) into current directory
bool DiskUnGzip(char * gzname, char * fname)
{
#define GZBUF 4096
gzFile gzF;
FILE *dskF;
int len;
char gzbuf[GZBUF]; // buffer for copied data
if((gzF = gzopen(gzname, "rb")) == NULL) return false;
dskF = fopen(fname, "wb");
if(dskF == NULL) { gzclose(gzF); return false; }
while(!gzeof(gzF)) {
len = gzread(gzF, gzbuf, GZBUF);
fwrite(gzbuf, 1, len, dskF);
}
fclose(dskF);
gzclose(gzF);
return true;
}
//===========================================================================
////////////////////////// Unzip .zip file to drive0.dsk or drive1.dsk (set in fname) into current directory
bool DiskUnZip(char * gzname, char * fname)
{
#define ZIPBUF 4096
struct zip *arch;
struct zip_file *zip_f;
FILE *dskF;
int len;
char zipbuf[ZIPBUF]; // buffer for copied data
// open zip archive
if((arch = zip_open(gzname, 0, NULL)) == NULL) return false;
dskF = fopen(fname, "wb");
if(dskF == NULL) { zip_close(arch); return false; }
// try to open first file in zip archive
if((zip_f = zip_fopen_index(arch,0,0)) == NULL) { zip_close(arch); return false; }
// read entire file into another file
while((len = zip_fread(zip_f, zipbuf, ZIPBUF))>0)
fwrite(zipbuf, 1, len, dskF);
zip_fclose(zip_f);
fclose(dskF);
zip_close(arch);
return true;
}
//===========================================================================
int DiskInsert (int drive, LPCTSTR imagefilename, BOOL writeprotected, BOOL createifnecessary) {
Disk_t * fptr = &g_aFloppyDisk[drive];
char s_title[MAX_DISK_IMAGE_NAME + 32];
char *tmp = (char*)imagefilename;
char tempdsk[12];
if (fptr->imagehandle)
RemoveDisk(drive);
ZeroMemory(fptr,sizeof(Disk_t ));
// let us deal with .gz files
int lf = strlen(imagefilename);
if(lf > 3 && imagefilename[lf-1] == 'z' && imagefilename[lf-2] == 'g' && imagefilename[lf-3] == '.')
{// .gz?
snprintf(tempdsk, 12, "drive%d.dsk", drive);
if (DiskUnGzip((char*)imagefilename, tempdsk)) {
writeprotected = 1;
createifnecessary = 0;
tmp = tempdsk;
}
}
else
if(lf > 4 && imagefilename[lf-1] == 'p' && imagefilename[lf-2] == 'i' && imagefilename[lf-3] == 'z'
&& imagefilename[lf-4] == '.') // .zip?
{
snprintf(tempdsk, 12, "drive%d.dsk", drive);
if (DiskUnZip((char*)imagefilename, tempdsk)) {
writeprotected = 1;
createifnecessary = 0;
tmp = tempdsk;
}
}
fptr->writeprotected = writeprotected;
int error = ImageOpen(/*imagefilename*/tmp,
&fptr->imagehandle,
&fptr->writeprotected,
createifnecessary);
if (error == IMAGE_ERROR_NONE)
{// if no errors
// _tcsncpy(fptr->(imageinfoptr)imagehandle->filename, imagefilename, MAX_PATH);
tmp = GetImageTitle(imagefilename, fptr); // get image title
snprintf(s_title, MAX_DISK_IMAGE_NAME + 32, "%s - %s", g_pAppTitle, tmp); //
if(drive == 0) SDL_WM_SetCaption(s_title, g_pAppTitle);// change caption just for drive 0 (leading)
printf("Disk is inserted. Full name = %s\n", /*g_aFloppyDisk[drive].fullname*/imagefilename);
}
return error;
}
//===========================================================================
BOOL DiskIsSpinning ()
{
return floppymotoron;
}
//===========================================================================
void DiskNotifyInvalidImage (LPCTSTR imagefilename,int error)
{
TCHAR buffer[MAX_PATH+128];
switch (error)
{
case 1:
sprintf(
buffer,
TEXT("Unable to open the file %s."),
(LPCTSTR)imagefilename);
break;
case 2:
sprintf(
buffer,
TEXT("Unable to use the file %s\nbecause the ")
TEXT("disk image format is not recognized."),
(LPCTSTR)imagefilename);
break;
default:
// IGNORE OTHER ERRORS SILENTLY
return;
}
/* MessageBox(
g_hFrameWindow,
buffer,
g_pAppTitle,
MB_ICONEXCLAMATION | MB_SETFOREGROUND);*/
fprintf(stderr, "Inserting disk failure: %s\n", buffer);
}
//===========================================================================
bool DiskGetProtect( const int iDrive )
{
if (IsDriveValid( iDrive ))
{
Disk_t *pFloppy = &g_aFloppyDisk[ iDrive ];
if (pFloppy->writeprotected)
return true;
}
return false;
}
//===========================================================================
void DiskSetProtect( const int iDrive, const bool bWriteProtect )
{
if (IsDriveValid( iDrive ))
{
Disk_t *pFloppy = &g_aFloppyDisk[ iDrive ];
pFloppy->writeprotected = bWriteProtect;
}
}
//===========================================================================
static BYTE DiskReadWrite (WORD programcounter, WORD, BYTE, BYTE, ULONG) {
Disk_t * fptr = &g_aFloppyDisk[currdrive];
diskaccessed = 1;
if ((!fptr->trackimagedata) && fptr->imagehandle)
ReadTrack(currdrive);
if (!fptr->trackimagedata)
return 0xFF;
BYTE result = 0;
if ((!floppywritemode) || (!fptr->writeprotected))
if (floppywritemode)
if (floppylatch & 0x80) {
*(fptr->trackimage+fptr->byte) = floppylatch;
fptr->trackimagedirty = 1;
}
else
return 0;
else
result = *(fptr->trackimage+fptr->byte);
if (0)
{
LOG_DISK("nib %4X = %2X\r", fptr->byte, result);
}
if (++fptr->byte >= fptr->nibbles)
fptr->byte = 0;
return result;
}
//===========================================================================
void DiskReset()
{
floppymotoron = 0;
phases = 0;
}
//===========================================================================
void DiskSelectImage (int drive, LPSTR pszFilename)
{
// omit pszFilename??? for some reason or not!
static int findex = 0; // file index will be remembered for current dir
static int backdx = 0; //reserve
static int dirdx = 0; // reserve for dirs
char * filename = NULL; // given filename
char fullpath[MAX_PATH]; // full path for it
char tmppath [MAX_PATH];
bool isdir; // if given filename is a directory?
// TCHAR directory[MAX_PATH] = TEXT("");
// TCHAR filename[MAX_PATH];
// TCHAR title[40];
findex = backdx;
isdir = true;
strcpy(fullpath, g_sCurrentDir); // global var for disk selecting directory
// printf("fullpath=%s\n", fullpath);
while(isdir)
{
if(!ChooseAnImage(g_ScreenWidth, g_ScreenHeight, fullpath, 6, &filename, &isdir, &findex)) {
DrawFrameWindow();
return; // if ESC was pressed, just leave
}
// strcpy(filename, pszFilename);
// printf("We got next:\n");
// printf("isdir=%d, findex=%d, filename=%s\n", isdir, findex, filename);
if(isdir)
{
if(!strcmp(filename, "..")) // go to the upper directory
{
filename = strrchr(fullpath, FILE_SEPARATOR); // look for last '/'
if(filename) *filename = '\0'; // cut it off
if(strlen(fullpath) == 0) strcpy(fullpath,"/"); //we don't want fullpath to be empty
findex = dirdx; // restore
}
else
{
if(strcmp(fullpath, "/")) snprintf(tmppath, MAX_PATH, "%s/%s", fullpath, filename); // next dir
else snprintf(tmppath, MAX_PATH, "/%s", filename);
strcpy(fullpath, tmppath); // got ot anew
// printf("We build %s\n", tmppath);
dirdx = findex; // store it
findex = 0; // start with beginning of dir
}
}/* if isdir */
} /* while isdir */
// we chose some file
strcpy(g_sCurrentDir, fullpath);
RegSaveString(TEXT("Preferences"),REGVALUE_PREF_START_DIR, 1, g_sCurrentDir);// save it
snprintf(tmppath, MAX_PATH, "%s/%s", fullpath, filename); // next dir
strcpy(fullpath, tmppath); // got ot anew
int error = DiskInsert(drive, fullpath, 0, 1);
if (!error)
{
/* filename[ofn.nFileOffset] = 0;
if (_tcsicmp(directory,filename))
RegSaveString(TEXT("Preferences"),REGVALUE_PREF_START_DIR,1,filename);*/
// in future: save file name in registry for future fetching
// for one drive will be one reg parameter
// RegSaveString(TEXT("Preferences"),REGVALUE_PREF_START_DIR, 1,filename);
if(drive == 0)
RegSaveString(TEXT("Preferences"),REGVALUE_DISK_IMAGE1, 1, fullpath);
else
RegSaveString(TEXT("Preferences"),REGVALUE_DISK_IMAGE2, 1, fullpath);
}
else
{
DiskNotifyInvalidImage(filename,error); // show error on the screen (or in console for our case)
}
backdx = findex; //store cursor position
DrawFrameWindow();
}
//===========================================================================
void DiskSelect (int drive)
{
DiskSelectImage(drive, TEXT("")); // drive is 0 for D1, 1 - for D2
}
//===========================================================================
void Disk_FTP_SelectImage (int drive) // select a disk image using FTP
{
// omit pszFilename??? for some reason or not!
static int findex = 0; // file index will be remembered for current dir
static int backdx = 0; //reserve
static int dirdx = 0; // reserve for dirs
char * filename = NULL; // given filename
char fullpath[MAX_PATH]; // full path for it
char tmppath [MAX_PATH];
bool isdir; // if given filename is a directory?
#ifndef _WIN32
struct stat info;
#endif
findex = backdx;
isdir = true;
strcpy(fullpath, g_sFTPServer); // global var for FTP path
while(isdir)
{
// printf("Disk_FTP_SelectImage: fullpath=%s\n", fullpath);
if(!ChooseAnImageFTP(g_ScreenWidth, g_ScreenHeight, fullpath, 6, &filename, &isdir, &findex)) {
DrawFrameWindow();
return; // if ESC was pressed, just leave
}
// Debug output
// printf("Disk_FTP_SelectImage: we got next:\n");
// printf("isdir=%d, findex=%d, filename=%s\n", isdir, findex, filename);
// --
if(isdir)
{
if(!strcmp(filename, ".."))
// go to the upper directory
{
filename = strrchr(fullpath, FTP_SEPARATOR); // look for last '/'
if(filename) {
*filename = '\0'; // cut it off
filename = strrchr(fullpath, FTP_SEPARATOR); // look for last '/'
if(filename) *(++filename) = '\0'; // leave it on the place
}
if(strlen(fullpath) == 0) strcpy(fullpath,"/"); //we don't want fullpath to be empty
findex = dirdx; // restore
}
else
{
if(strcmp(fullpath, "/")) snprintf(tmppath, MAX_PATH, "%s%s/", fullpath, filename); // next dir
else snprintf(tmppath, MAX_PATH, "/%s/", filename);
strcpy(fullpath, tmppath); // got ot anew
// printf("Disk_FTP_SelectImage: we build %s\n", tmppath);
dirdx = findex; // store it
findex = 0; // start with beginning of dir
}
}/* if isdir */
} /* while isdir */
// we chose some file
strcpy(g_sFTPServer, fullpath);
RegSaveString(TEXT("Preferences"),REGVALUE_FTP_DIR, 1, g_sFTPServer);// save it
snprintf(tmppath, MAX_PATH, "%s/%s", fullpath, filename);
strcpy(fullpath, tmppath); // fullpath - full path to file on FTP server
snprintf(tmppath, MAX_PATH, "%s/%s", g_sFTPLocalDir, filename); // local path for file
int error;
// One moment - if we have some file with the same name
// we do not want to download it again
#ifndef _WIN32
if(stat(tmppath,&info) == 0) {
error = 0; // use this file
}
else {
error = ftp_get(fullpath, tmppath); // 0 on success
}
#else
// using WIN32 method
if(GetFileAttributes(tmppath) != DWORD(-1)) error = 0;
else error = ftp_get(fullpath, tmppath); // 0 on success
#endif
if(!error) {
error = DiskInsert(drive, tmppath, 0, 1);// try to insert downloaded file as a disk image
if (!error)
{
/*
if(drive == 0)
RegSaveString(TEXT("Preferences"),REGVALUE_DISK_IMAGE1, 1, fullpath);
else
RegSaveString(TEXT("Preferences"),REGVALUE_DISK_IMAGE2, 1, fullpath);
*/
}
else
{
DiskNotifyInvalidImage(filename,error); // show error on the screen (or in console for our case)
}
}
else printf("Error downloading file %s\n",tmppath);
backdx = findex; //store cursor position
DrawFrameWindow();
}
//===========================================================================
static BYTE DiskSetLatchValue (WORD, WORD, BYTE write, BYTE value, ULONG) {
if (write)
floppylatch = value;
return floppylatch;
}
//===========================================================================
static BYTE DiskSetReadMode (WORD, WORD, BYTE, BYTE, ULONG) {
floppywritemode = 0;
return MemReturnRandomData(g_aFloppyDisk[currdrive].writeprotected);
}
//===========================================================================
static BYTE DiskSetWriteMode (WORD, WORD, BYTE, BYTE, ULONG) {
floppywritemode = 1;
BOOL modechange = !g_aFloppyDisk[currdrive].writelight;
g_aFloppyDisk[currdrive].writelight = 20000;
if (modechange)
FrameRefreshStatus(DRAW_LEDS);
return MemReturnRandomData(1);
}
//===========================================================================
void DiskUpdatePosition (DWORD cycles) {
int loop = 2;
while (loop--) {
Disk_t * fptr = &g_aFloppyDisk[loop];
if (fptr->spinning && !floppymotoron) {
if (!(fptr->spinning -= MIN(fptr->spinning,(cycles >> 6))))
FrameRefreshStatus(DRAW_LEDS);
}
if (floppywritemode && (currdrive == loop) && fptr->spinning)
fptr->writelight = 20000;
else if (fptr->writelight) {
if (!(fptr->writelight -= MIN(fptr->writelight,(cycles >> 6))))
FrameRefreshStatus(DRAW_LEDS);
}
if ((!enhancedisk) && (!diskaccessed) && fptr->spinning) {
needsprecision = cumulativecycles;
fptr->byte += (cycles >> 5);
if (fptr->byte >= fptr->nibbles)
fptr->byte -= fptr->nibbles;
}
}
diskaccessed = 0;
}
//===========================================================================
bool DiskDriveSwap()
{
char s_title[MAX_DISK_IMAGE_NAME + 32]; // for title changing
// Refuse to swap if either Disk][ is active
if(g_aFloppyDisk[0].spinning || g_aFloppyDisk[1].spinning)
return false;
// Swap disks between drives
Disk_t temp;
// Swap trackimage ptrs (so don't need to swap the buffers' data)
// TODO: Array of Pointers: Disk_t* g_aDrive[]
memcpy(&temp , &g_aFloppyDisk[0], sizeof(Disk_t ));
memcpy(&g_aFloppyDisk[0], &g_aFloppyDisk[1], sizeof(Disk_t ));
memcpy(&g_aFloppyDisk[1], &temp , sizeof(Disk_t ));
// change title
snprintf(s_title, MAX_DISK_IMAGE_NAME + 32, "%s - %s", g_pAppTitle, g_aFloppyDisk[0].imagename);
SDL_WM_SetCaption(s_title, g_pAppTitle);// change caption just for drive 0 (leading)
FrameRefreshStatus(DRAW_LEDS | DRAW_BUTTON_DRIVES);
return true;
}
//===========================================================================
//static BYTE Disk_IORead(WORD pc, BYTE addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft);
//static BYTE Disk_IOWrite(WORD pc, BYTE addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft);
void DiskLoadRom(LPBYTE pCxRomPeripheral, UINT uSlot)
{
const UINT DISK2_FW_SIZE = 256;
// 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;
// #define IDR_DISK2_FW "Disk2.rom"
// char BUFFER[DISK2_FW_SIZE];
// FILE * hdfile = NULL;
// hdfile = fopen(IDR_DISK2_FW, "rb");
// if(hdfile == NULL) return; // no file?
// UINT nbytes = fread(BUFFER, 1, DISK2_FW_SIZE, hdfile);
// fclose(hdfile);
// if(nbytes != DISK2_FW_SIZE) return; // have not read enough?
BYTE* pData = (BYTE*) Disk2_rom; // NB. Don't need to unlock resource
// if(pData == NULL)
// return; //
memcpy(pCxRomPeripheral + uSlot*256, pData, DISK2_FW_SIZE);
// TODO/FIXME: HACK! REMOVE A WAIT ROUTINE FROM THE DISK CONTROLLER'S FIRMWARE
*(pCxRomPeripheral+0x064C) = 0xA9;
*(pCxRomPeripheral+0x064D) = 0x00;
*(pCxRomPeripheral+0x064E) = 0xEA;
//
RegisterIoHandler(uSlot, Disk_IORead, Disk_IOWrite, NULL, NULL, NULL, NULL);
}
//===========================================================================
/*static*/ BYTE Disk_IORead(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft)
{
addr &= 0xFF;
switch (addr & 0xf)
{
case 0x0: return DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft);
case 0x1: return DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft);
case 0x2: return DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft);
case 0x3: return DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft);
case 0x4: return DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft);
case 0x5: return DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft);
case 0x6: return DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft);
case 0x7: return DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft);
case 0x8: return DiskControlMotor(pc, addr, bWrite, d, nCyclesLeft);
case 0x9: return DiskControlMotor(pc, addr, bWrite, d, nCyclesLeft);
case 0xA: return DiskEnable(pc, addr, bWrite, d, nCyclesLeft);
case 0xB: return DiskEnable(pc, addr, bWrite, d, nCyclesLeft);
case 0xC: return DiskReadWrite(pc, addr, bWrite, d, nCyclesLeft);
case 0xD: return DiskSetLatchValue(pc, addr, bWrite, d, nCyclesLeft);
case 0xE: return DiskSetReadMode(pc, addr, bWrite, d, nCyclesLeft);
case 0xF: return DiskSetWriteMode(pc, addr, bWrite, d, nCyclesLeft);
}
return 0;
}
/*static*/ BYTE Disk_IOWrite(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nCyclesLeft)
{
addr &= 0xFF;
switch (addr & 0xf)
{
case 0x0: return DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft);
case 0x1: return DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft);
case 0x2: return DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft);
case 0x3: return DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft);
case 0x4: return DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft);
case 0x5: return DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft);
case 0x6: return DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft);
case 0x7: return DiskControlStepper(pc, addr, bWrite, d, nCyclesLeft);
case 0x8: return DiskControlMotor(pc, addr, bWrite, d, nCyclesLeft);
case 0x9: return DiskControlMotor(pc, addr, bWrite, d, nCyclesLeft);
case 0xA: return DiskEnable(pc, addr, bWrite, d, nCyclesLeft);
case 0xB: return DiskEnable(pc, addr, bWrite, d, nCyclesLeft);
case 0xC: return DiskReadWrite(pc, addr, bWrite, d, nCyclesLeft);
case 0xD: return DiskSetLatchValue(pc, addr, bWrite, d, nCyclesLeft);
case 0xE: return DiskSetReadMode(pc, addr, bWrite, d, nCyclesLeft);
case 0xF: return DiskSetWriteMode(pc, addr, bWrite, d, nCyclesLeft);
}
return 0;
}
//===========================================================================
DWORD DiskGetSnapshot(SS_CARD_DISK2* pSS, DWORD dwSlot)
{
pSS->Hdr.UnitHdr.dwLength = sizeof(SS_CARD_DISK2);
pSS->Hdr.UnitHdr.dwVersion = MAKE_VERSION(1,0,0,2);
pSS->Hdr.dwSlot = dwSlot;
pSS->Hdr.dwType = CT_Disk2;
pSS->phases = phases; // new in 1.0.0.2 disk snapshots
pSS->currdrive = currdrive; // this was an int in 1.0.0.1 disk snapshots
pSS->diskaccessed = diskaccessed;
pSS->enhancedisk = enhancedisk;
pSS->floppylatch = floppylatch;
pSS->floppymotoron = floppymotoron;
pSS->floppywritemode = floppywritemode;
for(UINT i=0; i<2; i++)
{
strcpy(pSS->Unit[i].szFileName, g_aFloppyDisk[i].fullname);
// printf("Snapshot disk name = %s\n", pSS->Unit[i].szFileName);
pSS->Unit[i].track = g_aFloppyDisk[i].track;
pSS->Unit[i].phase = g_aFloppyDisk[i].phase;
pSS->Unit[i].byte = g_aFloppyDisk[i].byte;
pSS->Unit[i].writeprotected = g_aFloppyDisk[i].writeprotected;
pSS->Unit[i].trackimagedata = g_aFloppyDisk[i].trackimagedata;
pSS->Unit[i].trackimagedirty = g_aFloppyDisk[i].trackimagedirty;
pSS->Unit[i].spinning = g_aFloppyDisk[i].spinning;
pSS->Unit[i].writelight = g_aFloppyDisk[i].writelight;
pSS->Unit[i].nibbles = g_aFloppyDisk[i].nibbles;
if(g_aFloppyDisk[i].trackimage)
memcpy(pSS->Unit[i].nTrack, g_aFloppyDisk[i].trackimage, NIBBLES_PER_TRACK);
else
memset(pSS->Unit[i].nTrack, 0, NIBBLES_PER_TRACK);
}
// strcpy(pss->fdd_name1, g_aFloppyDisk[0].fullname);
// strcpy(pss->fdd_name2, g_aFloppyDisk[1].fullname);
return 0;
}
DWORD DiskSetSnapshot(SS_CARD_DISK2* pSS, DWORD /*dwSlot*/)
{
if(pSS->Hdr.UnitHdr.dwVersion > MAKE_VERSION(1,0,0,2))
{
return -1;
}
phases = pSS->phases; // new in 1.0.0.2 disk snapshots
currdrive = pSS->currdrive; // this was an int in 1.0.0.1 disk snapshots
diskaccessed = pSS->diskaccessed;
enhancedisk = pSS->enhancedisk;
floppylatch = pSS->floppylatch;
floppymotoron = pSS->floppymotoron;
floppywritemode = pSS->floppywritemode;
for(UINT i=0; i<2; i++)
{
bool bImageError = false;
ZeroMemory(&g_aFloppyDisk[i], sizeof(Disk_t ));
if(pSS->Unit[i].szFileName[0] == 0x00)
continue;
//
// Let us use POSIX stat of file
// struct stat buf;
// int result = stat(pSS->Unit[i].szFileName, &buf);
//DWORD dwAttributes = GetFileAttributes(pSS->Unit[i].szFileName);
// if(/*dwAttributes == INVALID_FILE_ATTRIBUTES*/ result == -1)
// {
// // Get user to browse for file
// DiskSelectImage(i, pSS->Unit[i].szFileName);
// result = stat(pSS->Unit[i].szFileName, &buf);
// //dwAttributes = GetFileAttributes(pSS->Unit[i].szFileName);
// }
//
// if(/*dwAttributes != INVALID_FILE_ATTRIBUTES*/ result == 0)
// {
// BOOL bWriteProtected = (/*dwAttributes & FILE_ATTRIBUTE_READONLY*/ buf.st_mode & S_IWUSR) ? /*TRUE : FALSE*/FALSE : TRUE;
//
// if(DiskInsert(i, pSS->Unit[i].szFileName, bWriteProtected, 0))
// bImageError = true;
//
// // DiskInsert() sets up:
// // . fullname
// // . imagename
// // . writeprotected
// }
if(DiskInsert(i, pSS->Unit[i].szFileName, 0, 0)) {
bImageError = true;
}
//
// 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;
}