/*
	Progressive Resources LLC

			FlashFile

	Version : 	2.00
	Date: 		11/01/2004
	Author: 	Erick M. Higa

	Revision History:
	12/31/2003 - EMH - v1.00
			   	 	 - Initial Release
	01/19/2004 - EMH - v1.10
			   	 	 - Fixed FAT access errors by allowing both FAT tables to be updated
					 - Fixed erase_cluster chain to stop if chain goes to '0'
					 - Fixed #include's so other non m128 processors could be used
					 - Fixed fcreate to match 'C' standard for function "creat"
					 - Fixed fseek so it would not error when in "READ" mode
					 - Modified SPI interface to use _FF_spi() so it is more universal
					   (see the "sd_cmd.c" file for the function used)
					 - Redifined global variables and #defines for more unique names
					 - Added string functions fputs, fputsc, & fgets
					 - Added functions fquickformat, fgetfileinfo, & GetVolID()
					 - Added directory support
					 - Modified delays in "sd_cmd.c" to increase transfer speed to max
					 - Updated "options.h" to include additions, and to make #defines
					   more universal to multiple platforms
	01/21/2004 - EMH - v1.20
			   	 	 - Added ICC Support to the FlashFileSD
					 - Fixed card initialization error for MMC/SD's that have only a boot
			   	 	   sector and no partition table
					 - Fixed intermittant error on fcreate when creating existing file
					 - Changed "options.h" to #include all required files
	02/19/2004 - EMH - v1.21
					 - Replaced all "const" refrances to "flash" to support CodeVision 1.24.1b
	03/02/2004 - EMH - v1.22 (unofficial release)
					 - Changed Directory Functions to allow for multi-cluster directory entries
					 - Added function addr_to_clust() to support long directories
					 - Fixed FAT table address calculation to support multiple reserved sectors
					   (previously) assumed one reserved sector, if XP formats card sometimes
					   multiple reserved sectors - thanks YW
	03/10/2004 - EMH - v1.30
					 - Added support for a Compact Flash package
					 - Renamed read and write to flash function names for multiple media support
	03/26/2004 - EMH - v1.31
					 - Added define for easy MEGA128Dev board setup
					 - Changed demo projects so "option.h" is in the project directory
	04/01/2004 - EMH - v1.32
					 - Fixed bug in "prev_cluster()" that didn't use updated FAT table address
					   calculations.  (effects XP formatted cards see v1.22 notes)
	05/07/2004 - EMH - v1.33
					 - Fixed bug in "fflush()" and "fopen()" that was incorrectly handling blank
					   files on certain MMC/SD cards.
	05/17/2004 - EMH - v1.34
					 - Fixed bug "fopen()" that was incorrectly writing to 0xFE00 + _FF_DIR_ADDR
					   if opening a file in "WRITE" mode (bug since v1.22).
					 - Fixed bug in "append_toc()" that was incorrectly updating the time/date
					   stamp if _RTC_ON_ is NOT defined.
	05/17/2004 - EMH - v1.40
					 - Added IAR EWAVR Support to the FlashFile
	06/14/2004 - EMH - v1.41
					 - Fixed bug in "fflush()" that was incorrectly saving the last sector of a
					   cluster to the first if saving or closing a file at the end of file AND at
					   the end of a cluster.
	11/01/2004 - EMH - v2.00
					 - Changing code to use structures and unions to optimize code to run faster
					   and use less code space.
					 - Fixed bug in fgets() that was reading too long if the line was >= n, and
					   it was returning the wrong pointer.
					 - Changing code to use sector addressing rather than direct memory addressing
					   to save code space and speed up time.
					 - Added _DIRECTORIES_SUPPORTED_ switch to options.h to enable or disable (less
					   code space) the use of directories.
					 - Added _NO_MALLOC_ switch to options.h to enable or disable the need of a
					   malloc() function.
					 - Added _BytsPerSec_512_ switch to options.h to enable or disable the BPB_BytsPerSec
					   variable.  In all current flash media, there are 512 bytes per sector, and there
					   really is no need to have it as a variable.  Enabling _BytsPerSec_512_ will hard
					   code all references to BPB_BytsPerSec as 0x200 or 512.  This will cut down on code
					   space and speed the functions up a bit since << 9 and >> 9 can replace * 512 and
					   / 512, and & 0x1FF can replace % 512.
					 - Fixed bug in addr_to_clust() that was checking if sector # was <= FirstDataSector
					   where it should just be < FirstDataSector.
					 - Added ability in initialize_media() for the calculations to look for the first
					   partition location in all four partition entry spaces rather than just the first.
					 - Fixed bug in scan_directory() that did not always 0xE5 as an empty file location.
					 - Fixed Directory support (scan_directory(), fcreate(), and mkdir()) so that multi 
					   cluster sub-directories could be read.
					 - Fixed Initialization of the File Structure that was intermittantly causing errors in 
					   fopen() and fcreate().
					 - Fixed bug in fcreatec(), fopenc(), and fget_file_infoc() that was not always handling 
					   full length filenames of files correctly.
					 - Combined code so that CodeVision, ImageCraft, and IAR all use the same base code.
					 - Updated fprintf() in ImageCraft and IAR versions so that the use vsprintf and can be 
					   used just like a printf().
					 - Added fread() and fwrite() functions.

	Software License
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