Hello can you mail me your code? Thanks, ed. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: 14 April 2007 17:05 To: freedos-devel Subject: Re: [Freedos-devel] Porting the FAT filesystem
Hi Eric, thanks for your detailed and clear answer. What I'm doing is "borrowing" (with respect to the license) the filesystem and producing a, freestanding (i.e. NO OS dependancies), run-to-completion (no semaphores, no critical sections...), self-consistent, pure ANSI C filesystem for embedded platforms. On top of this layer of code, I'll put the C standard library (*) which calls the following set of functions: open ( ), close ( ), creat ( ), read ( ), write ( ), lseek ( ), unlink ( ) (*) I borrowed from MINIX 4 years ago and fully tested. Floating points are handled by the assembly library of the specific platform. > In short: When a DOS app wants to read a file in FreeDOS, we get: > APP - int 21.3f - DosRead - DosRWSft - rwblock - dskxfer - execrh - > block device driver - blockio - LBA_Transfer - fl_... - int 13 - BIOS. > The BIOS is what finally talks to the hardware to fetch the data. Please, correct me if I'm wrong: The starting point of my port should be the following set of functions: "DosOpen()", "DosClose(), "DosRead", "DosWrite",... And not the following set: "dos_open()", "dos_close(), "dos_read", "dos_write",... > I hope readers of the mailing list archive will enjoy this > walkthrough or at least the summary, too ;-). > Sure did! Enrico ------------------------------------------------------ Leggi GRATIS le tue mail con il telefonino i-modeT di Wind http://i-mode.wind.it/ ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Freedos-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/freedos-devel ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Freedos-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/freedos-devel
