http://www.alumni.caltech.edu/~pje/software.html Second link from the bottom is: "Documentation and source code (171K) for a Re-entrant DOS-compatible file system. " Looks pretty complete. -Mark
-----Original Message----- From: r f [mailto:nobo...@web.de] Sent: Friday, January 23, 2004 3:41 PM To: mspgcc-users@lists.sourceforge.net Subject: Re: [Mspgcc-users] Re: MMC Hi, Bill Knight schrieb: > I understand the recent M$ issue with the DOS FS is the defense of > their patent for long filename support. For the embedded stuff I > do, long filename support is something that I can live without. The FAT is more than 21 years old and a patent has a lifetime of max. 21 years. So only some new features can be protected. Another point: The patent law is a commercial law - if you use patented things not commercially there are not restrictions by the patent law. And in a worst case scenario you can use a special task group of a research institute which is developing only workarounds around existing patents ;-) > A couple of projects ago, on a different processor, I found and updated > a public domain DOS file system by Philip Erdelsky. We used it with a > CompactFlash card but the lower interface of the package just needs > read & write sector routines. If anyone is interested, let me know. I'm interested. Can you post/mail a link? In my last mail i forgot to say that the MMC example code works on the MSP430F149 (2 k RAM) and is not tested with less RAM (maybe the limit is 1 k RAM). With the code i've written in a company it's no problem to read/write the registers and to read/write n (=1..512) bytes from/to address m (=1, 2, 3, ...) although the low level read/write can only be done in aligned 512 byte big blocks ;-) It's not easy to write code which works with (nearly) every card because the cards are far away from the MMC specification; code which does only what the specification says does not work. And some parameters are experimental values because some times are not limited in the specification. Regards Rolf F. ------------------------------------------------------- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn _______________________________________________ Mspgcc-users mailing list Mspgcc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mspgcc-users
