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https://github.com/idolpx/libMeatloaf.git
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119 lines
2.8 KiB
C++
119 lines
2.8 KiB
C++
// .D71 - 1571 disk image format
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//
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// https://vice-emu.sourceforge.io/vice_17.html#SEC373
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// https://ist.uwaterloo.ca/~schepers/formats/D71.TXT
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//
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#ifndef MEATLOAF_MEDIA_D71
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#define MEATLOAF_MEDIA_D71
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#include "meat_io.h"
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#include "d64.h"
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/********************************************************
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* Streams
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********************************************************/
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class D71IStream : public D64IStream {
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// override everything that requires overriding here
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public:
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D71IStream(std::shared_ptr<MStream> is) : D64IStream(is)
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{
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// D71 Partition Info
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std::vector<BlockAllocationMap> b = {
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{
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18, // track
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0, // sector
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0x04, // offset
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1, // start_track
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35, // end_track
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4 // byte_count
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},
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{
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53, // track
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0, // sector
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0x00, // offset
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36, // start_track
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70, // end_track
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3 // byte_count
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}
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};
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Partition p = {
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1, // track
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0, // sector
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0x04, // header_offset
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1, // directory_track
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4, // directory_sector
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0x00, // directory_offset
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b // block_allocation_map
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};
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partitions.clear();
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partitions.push_back(p);
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sectorsPerTrack = { 17, 18, 19, 21 };
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dos_rom = "dos1571";
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uint32_t size = containerStream->size();
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switch (size + media_header_size)
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{
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case 349696: // 70 tracks no errors
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break;
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case 351062: // 70 w/ errors
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error_info = true;
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break;
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}
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};
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virtual uint8_t speedZone( uint8_t track) override
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{
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if ( track < 35 )
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return (track < 18) + (track < 25) + (track < 31);
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else
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return (track < 53) + (track < 60) + (track < 66);
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};
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protected:
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private:
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friend class D71File;
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};
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/********************************************************
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* File implementations
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********************************************************/
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class D71File: public D64File {
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public:
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D71File(std::string path, bool is_dir = true) : D64File(path, is_dir) {};
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MStream* getDecodedStream(std::shared_ptr<MStream> containerIstream) override;
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};
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/********************************************************
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* FS
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********************************************************/
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class D71FileSystem: public MFileSystem
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{
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public:
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MFile* getFile(std::string path) override {
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return new D71File(path);
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}
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bool handles(std::string fileName) override {
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return byExtension(".d71", fileName);
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}
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D71FileSystem(): MFileSystem("d71") {};
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};
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#endif /* MEATLOAF_MEDIA_D71 */
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