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</TABLE><P>Download or upload a sector of 512b<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> - sector address to load/download - bit to indicate if it's a download or an upload*return:</PRE></TD></TABLE><H4> Note </H4><P><P><HR><A NAME="fat_update_buf_fat"></A><H3> fat_update_buf_fat </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>void <A HREF="#fat_update_buf_fat">fat_update_buf_fat</A> ( Uint16 cluster_old , Uint16 cluster , bit end ) </PRE></TD></TABLE><P>This function check if a fat sector have to be writen.<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return:</PRE></TD></TABLE><HR><A NAME="fat_update_entry_fat"></A><H3> fat_update_entry_fat </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>void <A HREF="#fat_update_entry_fat">fat_update_entry_fat</A> ( void ) </PRE></TD></TABLE><P>Update root entry and FAT after a writing file session (create or re-write)<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return:</PRE></TD></TABLE><HR><A NAME="fat_update_entry_fat"></A><H3> fat_update_entry_fat </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>void <A HREF="#fat_update_entry_fat">fat_update_entry_fat</A> ( void ) </PRE></TD></TABLE><P>Update root entry and FAT after a writing file session (create or re-write)<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return:</PRE></TD></TABLE><HR><A NAME="fat_update_fat_sector"></A><H3> fat_update_fat_sector </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>void <A HREF="#fat_update_fat_sector">fat_update_fat_sector</A> ( Uint16 sector_number ) </PRE></TD></TABLE><P>update a sector of fat<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> sector_number : fat sector position*return:</PRE></TD></TABLE><H4> Note </H4><P>This function check if there is 2 fats to be updated<HR><A NAME="fat_update_fat_sector"></A><H3> fat_update_fat_sector </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>void <A HREF="#fat_update_fat_sector">fat_update_fat_sector</A> ( Uint16 sector_number ) </PRE></TD></TABLE><P>update a sector of fat<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> sector_number : fat sector position*return:</PRE></TD></TABLE><H4> Note </H4><P>This function check if there is 2 fats to be updated<HR><A NAME="file_entry_dir"></A><H3> file_entry_dir </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#file_entry_dir">file_entry_dir</A> ( Byte id ) </PRE></TD></TABLE><P>Enter a directory<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> id: file type identifier*return: OK: file type found in dir KO: file type not found in dir</PRE></TD></TABLE><HR><A NAME="file_seek_next"></A><H3> file_seek_next </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#file_seek_next">file_seek_next</A> ( Byte id , bit loop ) </PRE></TD></TABLE><P>Select next file with specified extension<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> id: file type identifier loop: loop to the first file*return:</PRE></TD></TABLE><HR><A NAME="file_seek_prev"></A><H3> file_seek_prev </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#file_seek_prev">file_seek_prev</A> ( Byte id , bit loop ) </PRE></TD></TABLE><P>Select previous file with specified extension<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> id: file type identifier loop: loop to the last file*return:</PRE></TD></TABLE><H4> Note </H4><P>Depending on the time played, this function selects the previous fileor restarts the file under playing.<HR><A NAME="Hard_write_byte(0x01);"></A><H3> Hard_write_byte(0x01); </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 0x06 ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 0x00 ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE></PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>/ * Reserved * / </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>for ( i = 12; i != 0; i-- ) </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 0x00 ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE></PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( FAT_DRIVE_NUMBER ) ; / * Driver number * / </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 0x00 ) ; / * not used * / </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( FAT_EXT_SIGN ) ; / * extended boot signature * / </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 0x00 ) ; / * volume ID * / </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 0x00 ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 0x00 ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 0x00 ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 'N' ) ; / * Volume Label * / </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 'O' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( ' ' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 'N' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 'A' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 'M' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 'E' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( ' ' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( ' ' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( ' ' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( ' ' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 'F' ) ; / * File System Type in ASCII * / </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 'A' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( 'T' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( '3' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( '2' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( ' ' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( ' ' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>Hard_write_byte ( ' ' ) ; </PRE></TD><TR> <TD VALIGN=MIDDLE><PRE></PRE></TD><TR> <TD VALIGN=MIDDLE><PRE>for ( i = 420/2; i != 0; i-- ) / * Boot Code * / </PRE></TD></TABLE><HR><A NAME="iso_check_ext"></A><H3> iso_check_ext </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>Byte <A HREF="#iso_check_ext">iso_check_ext</A> ( void ) </PRE></TD></TABLE><P>Return the type of the file<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return:</PRE></TD></TABLE><HR><A NAME="iso_dgetw"></A><H3> iso_dgetw </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>Uint16 <A HREF="#iso_dgetw">iso_dgetw</A> ( void ) </PRE></TD></TABLE><P>Read one word from directory<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return: word read</PRE></TD></TABLE><H4> Note </H4><P><P><HR><A NAME="iso_dseek"></A><H3> iso_dseek </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#iso_dseek">iso_dseek</A> ( Int16 offset ) </PRE></TD></TABLE><P>Seek from the current position to a new offset computing relativepoisition +/- scan size limited to a 16 bit offset<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> offset: offset to current position in signed word value*return:</PRE></TD></TABLE><H4> Note </H4><P><P><HR><A NAME="iso_fclose"></A><H3> iso_fclose </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>void <A HREF="#iso_fclose">iso_fclose</A> ( void ) </PRE></TD></TABLE><P>Close opened file<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return:</PRE></TD></TABLE><HR><A NAME="iso_feob"></A><H3> iso_feob </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#iso_feob">iso_feob</A> ( void ) </PRE></TD></TABLE><P>Determine if B position have been reached in mode repeat A/B<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return: - TRUE : B position have been reached - FALSE : B position have not benn reached</PRE></TD></TABLE><HR><A NAME="iso_feof"></A><H3> iso_feof </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>bit <A HREF="#iso_feof">iso_feof</A> ( void ) </PRE></TD></TABLE><P>Return the file end flag<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return:</PRE></TD></TABLE><HR><A NAME="iso_fetch_directory_info"></A><H3> iso_fetch_directory_info </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>void <A HREF="#iso_fetch_directory_info">iso_fetch_directory_info</A> ( <A HREF="#iso_file">iso_file</A> * entry ) </PRE></TD></TABLE><P>Get information about a directory or file entry<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE> entry: directory entry structure*return:</PRE></TD></TABLE><H4> Note </H4><P><P><HR><A NAME="iso_fgetc"></A><H3> iso_fgetc </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>Byte <A HREF="#iso_fgetc">iso_fgetc</A> ( void ) </PRE></TD></TABLE><P>Read one byte from file<P><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#FFD0D0" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>*return: byte read</PRE></TD></TABLE><H4> Note </H4><P>As this function is called very often it must be short and optimizedin execution time<HR><A NAME="iso_file_get_pos"></A><H3> iso_file_get_pos </H3><TABLE BORDER="0" WIDTH="100 %" BGCOLOR="#D6E8FF" CELLPADDING="6"><TR> <TD VALIGN=MIDDLE><PRE>Uint32 <A HREF="#iso_file_get_pos">iso_file_get_pos</A> ( void ) </PRE></TD></TABLE><P>Calculate the current file position<P><TABLE BORDER="0" WIDTH="100 %" BGC?? 快捷鍵說明
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