106 lines
3.3 KiB
C++
106 lines
3.3 KiB
C++
/*
|
|
* Copyright (C) 2002-2020 The DOSBox Team
|
|
*
|
|
* This program 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.
|
|
*
|
|
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef DOSBOX_BIOS_DISK_H
|
|
#define DOSBOX_BIOS_DISK_H
|
|
|
|
#include <memory>
|
|
#include <stdio.h>
|
|
#include <array>
|
|
#ifndef DOSBOX_MEM_H
|
|
#include "mem.h"
|
|
#endif
|
|
#ifndef DOSBOX_DOS_INC_H
|
|
#include "dos_inc.h"
|
|
#endif
|
|
#ifndef DOSBOX_BIOS_H
|
|
#include "bios.h"
|
|
#endif
|
|
|
|
/* The Section handling Bios Disk Access */
|
|
#define BIOS_MAX_DISK 10
|
|
|
|
#define MAX_SWAPPABLE_DISKS 20
|
|
struct diskGeo {
|
|
Bit32u ksize; /* Size in kilobytes */
|
|
Bit16u secttrack; /* Sectors per track */
|
|
Bit16u headscyl; /* Heads per cylinder */
|
|
Bit16u cylcount; /* Cylinders per side */
|
|
Bit16u biosval; /* Type to return from BIOS */
|
|
};
|
|
extern diskGeo DiskGeometryList[];
|
|
|
|
class imageDisk {
|
|
public:
|
|
Bit8u Read_Sector(Bit32u head,Bit32u cylinder,Bit32u sector,void * data);
|
|
Bit8u Write_Sector(Bit32u head,Bit32u cylinder,Bit32u sector,void * data);
|
|
Bit8u Read_AbsoluteSector(Bit32u sectnum, void * data);
|
|
Bit8u Write_AbsoluteSector(Bit32u sectnum, void * data);
|
|
|
|
void Set_Geometry(Bit32u setHeads, Bit32u setCyl, Bit32u setSect, Bit32u setSectSize);
|
|
void Get_Geometry(Bit32u * getHeads, Bit32u *getCyl, Bit32u *getSect, Bit32u *getSectSize);
|
|
Bit8u GetBiosType(void);
|
|
Bit32u getSectSize(void);
|
|
imageDisk(FILE *imgFile, const char *imgName, Bit32u imgSizeK, bool isHardDisk);
|
|
imageDisk(const imageDisk&) = delete; // prevent copy
|
|
imageDisk& operator=(const imageDisk&) = delete; // prevent assignment
|
|
~imageDisk() { if(diskimg != NULL) { fclose(diskimg); } };
|
|
|
|
bool hardDrive;
|
|
bool active;
|
|
FILE *diskimg;
|
|
char diskname[512];
|
|
Bit8u floppytype;
|
|
|
|
Bit32u sector_size;
|
|
Bit32u heads,cylinders,sectors;
|
|
private:
|
|
Bit32u current_fpos;
|
|
enum { NONE,READ,WRITE } last_action;
|
|
};
|
|
|
|
void updateDPT(void);
|
|
void incrementFDD(void);
|
|
|
|
#define MAX_HDD_IMAGES 2
|
|
|
|
#define MAX_DISK_IMAGES (2 + MAX_HDD_IMAGES)
|
|
|
|
extern std::array<std::shared_ptr<imageDisk>, MAX_DISK_IMAGES> imageDiskList;
|
|
extern std::array<std::shared_ptr<imageDisk>, MAX_SWAPPABLE_DISKS> diskSwap;
|
|
|
|
extern Bit16u imgDTASeg; /* Real memory location of temporary DTA pointer for fat image disk access */
|
|
extern RealPt imgDTAPtr; /* Real memory location of temporary DTA pointer for fat image disk access */
|
|
extern DOS_DTA *imgDTA;
|
|
|
|
/**
|
|
* Insert 2 boot disks starting at swap_position into the drives A and B.
|
|
*
|
|
* Selected disks are wrapped around, so swapping in the last boot disk
|
|
* will place the first disk into drive B.
|
|
*
|
|
* When there's only 1 disk, it will be placed into both A and B drives.
|
|
*
|
|
* When there's no boot disks loaded, this function has no effect.
|
|
*/
|
|
void swapInDisks(unsigned int swap_position);
|
|
|
|
void swapInNextDisk(void);
|
|
bool getSwapRequest(void);
|
|
|
|
#endif
|