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Edging towards SSD/DSD support. Hold on!

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This commit is contained in:
Thomas Harte 2016-09-18 19:32:08 -04:00
parent 91cd7e143b
commit 02c9a82cb5
2 changed files with 21 additions and 2 deletions
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21
Storage/Disk/Formats/SSD.cpp
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@ -9,6 +9,7 @@
#include "SSD.hpp"
#include <sys/stat.h>
#include "../Encodings/MFM.hpp"
using namespace Storage::Disk;
@ -27,6 +28,12 @@ SSD::SSD(const char *file_name) : _file(nullptr)
_file = fopen(file_name, "rb");
if(!_file) throw ErrorCantOpen;
// this has two heads if the suffix is .dsd, one if it's .ssd
_head_count = (tolower(file_name[strlen(file_name) - 3]) == 'd') ? 2 : 1;
_track_count = (unsigned int)(file_stats.st_size / (256 * 10));
if(_track_count < 40) _track_count = 40;
else if(_track_count < 80) _track_count = 80;
}
SSD::~SSD()
@ -36,16 +43,26 @@ SSD::~SSD()
unsigned int SSD::get_head_position_count()
{
return 1;
return _track_count;
}
unsigned int SSD::get_head_count()
{
return 1;
return _head_count;
}
std::shared_ptr<Track> SSD::get_track_at_position(unsigned int head, unsigned int position)
{
std::shared_ptr<Track> track;
if(head >= _head_count) return track;
long file_offset = (position * (_head_count ? 2 : 1) + head) * 256 * 10;
fseek(_file, file_offset, SEEK_SET);
// std::vector<
for(int sector = 0; sector < 10; sector++)
{
}
return track;
}

2
Storage/Disk/Formats/SSD.hpp
View File

@ -40,6 +40,8 @@ class SSD: public Disk {
private:
FILE *_file;
unsigned int _head_count;
unsigned int _track_count;
};
}