-------------------------------------------------------------------------------
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-----------H----H--X----X-----CCCCC----22222----0000-----0000------11----------
----------H----H----X-X-----C--------------2---0----0---0----0--1--1-----------
---------HHHHHH-----X------C----------22222---0----0---0----0-----1------------
--------H----H----X--X----C----------2-------0----0---0----0-----1-------------
-------H----H---X-----X---CCCCC-----222222----0000-----0000----1111------------
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----------------------------------------------------- http://hxc2001.free.fr --
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02/11/2009: Firmware SD HxCFloppyEmulator v1.0.1.0 by Sven Henze
Some enhancements:
- Write protection now even better (similar to HxC firmware 0.1.1.0)
- Display "Select tape" now supressed if SD card has been removed
	
29/10/2009: Firmware SD HxCFloppyEmulator v1.0.0.1 by Sven Henze
Based on original SD HxCFloppyEmulator v0.1.0.0 firmware from 27/10/2009
- New firmware can be loaded and flashed using the boostrap loader from SD card

26/10/2009: Firmware SD HxCFloppyEmulator v0.0.6.2 by Sven Henze
Based on original SD HxCFloppyEmulator v0.0.6.0 firmware from 03/10/2009
- New feature: Automount of disk images
   - On power up if no hxcsdfe.cfg is present
   - Pressing the "up" button automatically mounts the next image
   - Pressing the "down" button automatically mounts the previous image
   - "Select" button remains to work (mounts / unmounts the current image)
  AUTOMOUNT can be deactivated in ihm.c by setting the AUTOMOUNT definition to 0
- New feature: Firmware detects when a user removes the SD card and automatically 
               unmounts the image
- Bug fix: /WPT signal will be generated if config file hxcsdfe.cfg is present
- C code review: C code now needs less space

19/10/2009: Firmware SD HxCFloppyEmulator v0.0.6.1  by Sven Henze
Based on original SD HxCFloppyEmulator v0.0.6.0 firmware from 03/10/2009
- Implemented /WPT signal: If SD card is write protected the /WPT signal is set

03/10/2009: Firmware SD HxCFloppyEmulator v0.0.6.0
Some bugs corrected ! - update highly recommended to fix write related bugs ! :
- "write sector dropped" bug corrected
- 1KB sector write support corrected.
- 500kbits write mode buffer overflow protection added (protection against track format).
- Interface mode setting (amiga/shugart) bug corrected.
- 256/512/1024bytes sectors write is now functionnal in 250kbits/s and 500kbits/s mode.

20/09/2009: Firmware SD HxCFloppyEmulator v0.0.5.1
- 1KB sector write support added. (to be tested)
- Autoload feature added: At power up the lastest floppy emulator state is restored.
The floppy image loaded during a power down will be reloaded at power up. 
To activate this feature you must copy HXCSDFE.CFG at the root of the SDCard.
- UI : version code at startup

09/08/2009: Firmware SD HxCFloppyEmulator v0.0.4.4
-MSSP PIC18F4525/4620 Rev. A4 Silicon Errata applied.
-SPI code optimized

26/04/2009: Firmware SD HxCFloppyEmulator v0.0.4.3
-Write support : MFM encoder bug corrected, GAP3 first byte encoding (WD1793)  

18/04/2009: Firmware SD HxCFloppyEmulator v0.0.4.2
-Faster write routines
-500kb/s write support (warning alpha version/unstable) 

21/03/2009: Firmware SD HxCFloppyEmulator v0.0.4.1
-256bytes sector write support added 

15/03/2009: Firmware SD HxCFloppyEmulator v0.0.4.0
-Write support added : 
 Warning: the only sector format supported by the write feature is 250kbits/S MFM (DD) 512bytes sector. 
 Tested with PC and Atari ST. Should work with any computer using this common format (CPC, ZX SPECTRUM, MSX ,etc).
-Some code optimizations : table driven crc7 generator and faster MFM handler 

11/12/2008: Firmware SD HxCFloppyEmulator v0.0.3.0
-SDHC SDcard support (up to 32GB - tested with 8GB SDHC Card)

14/10/2008: Firmware SD HxCFloppyEmulator v0.0.2.0
-(beta version):
 Sub-folders support.
 Bug in Sdcard routines corrected. 
 LCD routines rewritten.
 SDcard change support.

21/02/2008: Firmware SD HxCFloppyEmulator v0.0.1.0
-First public version (alpha version):
 Support Amiga, Atari ST and Amstrad CPC series computers. 
 FAT32 only

