Hi! > Is there also some documentation about the DOS part available?
You mean DOS port. > What is the equivalent for /dev/mem or /dev/hda under DOS? Not available. Linux users love "dd" because they use it with all the /dev/something device driver files of their big kernel, but in DOS, dd cannot be used for similar low level stuff. In all operating systems, dd is still a fun tool to copy and paste parts of all sorts of files... ;-) Only a few selected /dev items are supported in DJGPP, by handling them directly in the C library. DD for DOS can use: /dev/stdin /dev/stdout /dev/stderr /dev/null (what else?) Maybe also: /dev/tty /dev/fd/HANDLENUMBER /dev/tmpfile ?? Mentioned on www.delorie.com/djgpp/doc/kb/kb_10.html "Transparent handling of special file names" are also: - you can say /dev/c/dos/something to say c:\dos\something (good for programs which do not understand drive letters) - you can say /dev/env/MYDIR/something to say %MYDIR%\something (expands environment variables) - you can use /dev/ANYDOSCHARDRIVER, for example there is a driver which creates (u) r a n d o m $ DOS devices which, as usual in DOS, are visible in every existing directory, but DJGPP also makes them visible in the virtual /dev dir. See: www.rahul.net/dkaufman/ Note: CYGWIN has /dev/random - DOS char drivers are: NUL CON PRN AUX LPT1 ... LPT3 COM1 ... COM4 and CLOCK$ but the latter is only useable via IOCTLs. Same for EMM386 and CDROM drivers etc, generally speaking. Apart from the above, to answer your /dev/mem and /dev/hda question: Well, you simply access the memory in DOS :-). As for the disk, you use the BIOS in DOS. If you want to access memory beyond the first 1 MB, use a 32bit compiler as DJGPP or use int 15 function 87 if you have to use 16bit compilers. As you see, /dev/FANCYSTUFF is not scriptable in DOS, but it is still accessible ;-). By the way: There are of course not only command.com and 4dos but there are also BASH etc in DOS. Even fancy languages like PERL or REXX are available for DOS. >>> Is there a port of dd for DOS? >> www.ibiblio.org/pub/micro/pc-stuff/freedos/gnuish/gnufut21.zip >> GNU file utils, with "dd.exe". Source included. Cool, but 8.3 filenames on webservers are super annoying... No altavista or google can know that gnufut is fileutils ;-) Eric ------------------------------------------------------------------------------ Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM) software. With Adobe AIR, Ajax developers can use existing skills and code to build responsive, highly engaging applications that combine the power of local resources and data with the reach of the web. Download the Adobe AIR SDK and Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
