jrv@siemens.UUCP (03/13/86)
> >This has been posted before but it seems to be of continuing interest >to net subscribers. NOTE - I'M STILL LOOKING FOR ADDRESS TO PATCH >FOR USE WITH DOS 3.1 (ON IBM-AT). ... patch for DOS 2.x >For DOS 3.1, an undocumented feature of the SHELL command is used >in the CONFIG.SYS file: ... DOS 3.x SHELL command feature >I'd like the address to patch in DOS 3.1, since the SHELL feature is undoc- >umented, and hence unsupported. > >Max S. Robin >AT&T Bell Laboratories >Rm. 3E-318A >Whippany, NJ 07981 >201-386-6865 > >email:whuxg!2212msr > At least the SHELL command is listed in the documentation! I think there is a higher probability that this command gets fully documented so that it stays in future revisions of MS-DOS then for the address of a patch to remain constant from one version to another. :-) By the way, the location for the patch on my DOS 3.1 on an IBM PC-AT is D0D. The current instruction is: xxxx:0D0D C7063A130A00 MOV WORD PTR [133A],000A I found this before I learned of the 'feature' in the SHELL command. Jim Vallino Siemens Research and Technology Labs Princeton, NJ {ihnp4,allegra}!princeton!siemens!jrv
2212msr@whuts.UUCP (ROBIN) (03/16/86)
> > At least the SHELL command is listed in the documentation! I think there > is a higher probability that this command gets fully documented so that > it stays in future revisions of MS-DOS then for the address of a patch to > remain constant from one version to another. :-) > > By the way, the location for the patch on my DOS 3.1 on an IBM PC-AT is D0D. > The current instruction is: > > xxxx:0D0D C7063A130A00 MOV WORD PTR [133A],000A > > I found this before I learned of the 'feature' in the SHELL command. > > Jim Vallino > Siemens Research and Technology Labs > Princeton, NJ > {ihnp4,allegra}!princeton!siemens!jrv While the SHELL command is documented, the /e option does not appear to be, at least not in the documentation I've seen. Interesting address (D0D), since in my copy of DOS 3.1 on my PC-AT the address turned out to be 0D11 ! Max Robin AT&T Bell Laboratories Whippany NJ 201-386-6865 email:whuxg!2212msr