mirror of https://github.com/makarcz/vm6502.git
101 lines
3.2 KiB
C++
101 lines
3.2 KiB
C++
/*
|
|
*--------------------------------------------------------------------
|
|
* Project: VM65 - Virtual Machine/CPU emulator programming
|
|
* framework.
|
|
*
|
|
* File: MassStorage.h
|
|
*
|
|
* Purpose: Prototype of MassStorage class and supporting data
|
|
* structures, constants, enumerations and macros.
|
|
*
|
|
* Date: 8/16/2017
|
|
*
|
|
* Copyright: (C) by Marek Karcz 2016, 2017. All rights reserved.
|
|
*
|
|
* Contact: makarcz@yahoo.com
|
|
*
|
|
* License Agreement and Warranty:
|
|
|
|
This software is provided with No Warranty.
|
|
I (Marek Karcz) will not be held responsible for any damage to
|
|
computer systems, data or user's health resulting from use.
|
|
Please proceed responsibly and apply common sense.
|
|
This software is provided in hope that it will be useful.
|
|
It is free of charge for non-commercial and educational use.
|
|
Distribution of this software in non-commercial and educational
|
|
derivative work is permitted under condition that original
|
|
copyright notices and comments are preserved. Some 3-rd party work
|
|
included with this project may require separate application for
|
|
permission from their respective authors/copyright owners.
|
|
|
|
*--------------------------------------------------------------------
|
|
*/
|
|
#ifndef MASSSTORAGE_H
|
|
#define MASSSTORAGE_H
|
|
|
|
#include <string>
|
|
|
|
using namespace std;
|
|
|
|
namespace MKBasic {
|
|
|
|
class MassStorage {
|
|
|
|
public:
|
|
|
|
// CBM 1541 format
|
|
static const int max_numof_sectors = 21;
|
|
static const int sector_size = 256;
|
|
static const int max_numof_tracks = 35;
|
|
static const int num_of_images = 10;
|
|
constexpr static int sect_per_track[] =
|
|
{21, 21, 21, 21, 21, 21, 21,
|
|
21, 21, 21, 21, 21, 21, 21,
|
|
21, 21, 21,
|
|
19, 19, 19, 19, 19, 19, 19,
|
|
18, 18, 18, 18, 18, 18,
|
|
17, 17, 17, 17, 17};
|
|
|
|
MassStorage();
|
|
~MassStorage();
|
|
int Format (int id, string name); // format disk image
|
|
int Flush (int id); // flush disk image to hard drive
|
|
unsigned char *ReadSectorData(int id,
|
|
int track,
|
|
int sector); // read data from sector
|
|
int WriteSectorData (int id,
|
|
int track,
|
|
int sector,
|
|
unsigned char *buf); // write data to sector
|
|
|
|
private:
|
|
|
|
// definition of a disk track structure
|
|
struct DiskTrack {
|
|
|
|
int num;
|
|
int num_of_sectors;
|
|
unsigned char data[max_numof_sectors * sector_size];
|
|
|
|
};
|
|
|
|
// definition of a disk image structure
|
|
struct DiskImage {
|
|
|
|
int id;
|
|
string name;
|
|
DiskTrack data[max_numof_tracks];
|
|
};
|
|
|
|
unsigned char mSectorBuf[sector_size]; // buffer for sector data
|
|
DiskImage mDiskImages[num_of_images]; // buffer for all disk images
|
|
|
|
void Initialize();
|
|
int LoadFromFile(int id, string name); // load image from disk cache
|
|
|
|
}; // class MassStorage
|
|
|
|
} // namespace MKBasic
|
|
|
|
#endif
|