1 | //====================================================================== |
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2 | // |
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3 | // Project: XTIDE Universal BIOS, Serial Port Server |
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4 | // |
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5 | // File: FlatImage.h - Header file for basic flat disk image support |
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6 | // |
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7 | |
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8 | #include "library.h" |
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9 | |
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10 | class FlatImage : public Image |
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11 | { |
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12 | private: |
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13 | class FileAccess fp; |
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14 | |
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15 | public: |
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16 | FlatImage( char *name, int p_readOnly, int p_drive, int p_create, unsigned long p_cyl, unsigned long p_head, unsigned long p_sect, int p_useCHS ) : Image( name, p_readOnly, p_drive, p_create, p_cyl, p_head, p_sect, p_useCHS ) |
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17 | { |
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18 | long filesize; |
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19 | |
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20 | if( p_create ) |
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21 | { |
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22 | char buff[512]; |
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23 | unsigned long size; |
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24 | double sizef; |
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25 | FileAccess cf; |
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26 | char sizeChar; |
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27 | |
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28 | size = (unsigned long) p_cyl * (unsigned long) p_sect * (unsigned long) p_head; |
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29 | if( size > cf.MaxSectors ) |
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30 | log( -1, "'%s', can't create flat file with size greater than %lu 512-byte sectors", name, cf.MaxSectors ); |
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31 | sizef = size / 2048.0; // 512 byte sectors -> MB |
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32 | sizeChar = 'M'; |
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33 | if( sizef < 1 ) |
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34 | { |
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35 | sizef *= 1024; |
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36 | sizeChar = 'K'; |
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37 | } |
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38 | |
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39 | if( cf.Create( name ) ) |
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40 | { |
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41 | memset( &buff[0], 0, 512 ); |
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42 | while( size-- ) |
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43 | cf.Write( &buff[0], 512 ); |
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44 | |
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45 | if( p_cyl > 1024 ) |
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46 | log( 0, "Created file '%s', size %.2lf %cB", name, sizef, sizeChar ); |
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47 | else |
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48 | log( 0, "Created file '%s', geometry %u:%u:%u, size %.2lf %cB", name, p_cyl, p_head, p_sect, sizef, sizeChar ); |
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49 | cf.Close(); |
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50 | } |
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51 | } |
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52 | |
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53 | fp.Open( name ); |
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54 | |
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55 | totallba = fp.SizeSectors(); |
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56 | |
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57 | init( name, p_readOnly, p_drive, p_cyl, p_head, p_sect, p_useCHS ); |
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58 | } |
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59 | |
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60 | FlatImage::~FlatImage() |
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61 | { |
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62 | fp.Close(); |
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63 | } |
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64 | |
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65 | void seekSector( unsigned long lba ) |
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66 | { |
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67 | fp.SeekSectors( lba ); |
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68 | } |
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69 | |
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70 | void writeSector( void *buff ) |
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71 | { |
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72 | fp.Write( buff, 512 ); |
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73 | } |
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74 | |
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75 | void readSector( void *buff ) |
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76 | { |
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77 | fp.Read( buff, 512 ); |
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78 | } |
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79 | }; |
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80 | |
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