FAT on Compact Flash

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originally posted by odespont@Jun 29 2006, 07:49 AM

hello,

i just found how to implement fat file system on my compact flash

without any os, on the 1c20 evaluation kit

and i think anybody is interresed by this subject.

sorry for my english, i&#39;m french.... http://forum.niosforum.com/work2/style_emoticons/<#emo_dir#>/biggrin.gif

you need to download:

* compact flash hardware & software examples for nios ii 5.0 (http://forum.niosforum.com/downloads/cflash/cf5_0.zip) from jesse in tested ip from this forum.

* (the dosfs distribution archive (http://www.zws.com/products/dosfs/index.html))

you need to modify the dosfs distribution archive:

delete "dosemu.h" and "dosemu.c".

in "dosfs.h" add an include to "cddiskutils.h"

add :

#define dfs_readsector(unit,buffer,sector,count) readlogicalsector(( unsigned long) sector, (unsigned long) count,

(unsigned short *)buffer);# define dfs_writesector(unit,buffer,sector,count) writelogicalsector(( unsigned long) sector, (unsigned long) count,

(unsigned short *)buffer);

compile and look at the error :

replace all type define in dosfs distribution archive by the equivalent alt_u8, alt_u16 and alt_u32, for all the type.

it&#39;s ok for me, fat 12, fat 16 and fat 32 in chs and lba.

if anybody want some details, you can contact me....

@+

olivier http://forum.niosforum.com/work2/style_emoticons/<#emo_dir#>/blink.gif

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Hi Olivier,

nice job http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile.gif

I&#39;m a french guy too, so if you want to discuss about Nios II, just drop me a message (french will be appreciated of course). I&#39;m a Nios beginner, so it is always interesting for me to know what the others do with Nios.

Regards.