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 |
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27 | size = (unsigned long) p_cyl * (unsigned long) p_sect * (unsigned long) p_head;
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28 | if( size > cf.MaxSectors )
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29 | log( -1, "'%s', can't create flat file with size greater than %lu 512-byte sectors", name, cf.MaxSectors );
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30 | sizef = size / 2048.0; // 512 byte sectors -> MB
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31 |
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32 | cf.Create( name );
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33 |
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34 | memset( &buff[0], 0, 512 );
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35 | while( size-- )
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36 | cf.Write( &buff[0], 512 );
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37 |
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38 | if( p_cyl > 1024 )
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39 | log( 0, "Created file '%s', size %.1lf MB", name, sizef );
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40 | else
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41 | log( 0, "Created file '%s', geometry %u:%u:%u, size %.1lf MB", name, p_cyl, p_sect, p_head, sizef );
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42 |
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43 | cf.Close();
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44 | }
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45 |
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46 | fp.Open( name );
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47 |
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48 | totallba = fp.SizeSectors();
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49 |
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50 | init( name, p_readOnly, p_drive, p_cyl, p_head, p_sect, p_useCHS );
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51 | }
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52 |
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53 | FlatImage::~FlatImage()
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54 | {
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55 | fp.Close();
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56 | }
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57 |
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58 | void seekSector( unsigned long lba )
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59 | {
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60 | fp.SeekSectors( lba );
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61 | }
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62 |
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63 | void writeSector( void *buff )
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64 | {
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65 | fp.Write( buff, 512 );
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66 | }
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67 |
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68 | void readSector( void *buff )
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69 | {
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70 | fp.Read( buff, 512 );
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71 | }
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72 | };
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73 |
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