Lpc2000

> >I need to correct myself re: RDCF2.  I compiled it and it 
executes 
> >well when installed on a floppy and interacting with a floppy.
> >
> >It does not work from my hard drive whether interacting with the 
HD 
> >where it fails completely or the floppy where it gets just about 
> >everything wrong.
> >
> >I traced the hard drive failure to the first call to absread 
where 
> >the code is trying to read absolute sector 0.  I have to think 
about 
> >this but I think it is incorrect.  In any event, the call fails.
> >
> >Another limitation to RDCF2 is a 32 MB limit so the code is for a 
> >very early version of FAT.  From the very first paragraph of the 
doc 
> >file: "RDCF is a reentrant and ROMable DOS-compatible file system 
> >designed for use with floppy diskettes and hard disk partitions 
that 
> >do not exceed 32 Mbytes in size."
> >
> >Anyway, scrap that version; it doesn't really work.
> >
> >  
> >
> No, there is code in there to adapt between 12bit & 16bit FATs..  
It 
> does appear to be working, I'm writing files onto a 128Meg MMC 
image.  
> More testing is needed before I'm confident that what I reworked 
is 
> doing what it should: write a bunch of 32Meg files and verify 
contents.
> 
> TomW

I really don't understand why it doesn't work, I can only report my 
observation and a 10 minute excursion with the debugger.  It is also 
broken in some regard with file move because it will move a 
file 'junk' into a subdirectory named 'junk' and then refuse to 
delete or rename the file; an observation that came about because of 
the completely off the wall path requirements.

If multiple drives are allowed, every path must include a drive.  A 
backslash can never follow a drive specification.  These kinds of 
things are a drag.  I understand the issue of not having a current 
working path (or directory) but it does add a measure of confusion.

I saw the code for FAT12 and FAT16 and the differences seem 
reasonable.  The first partition of the HDD I was using was 502 MB 
FAT16.

I'm considering buying the FLASH File driver even though the CF code 
is an upgrade to the basic price.  I'm also considering leaving 
things as they are.  I can read FAT32 and the write requirement may 
not be worth the effort.  It works quite well as it is and until I 
have FAT32, CF, MP3 and RTOS running I don't know how much memory 
will be left to implement a complete file system.  But several 
thousand lines of additional code will probably push the limit of 
the LPC2106.

Richard