luke@mtuno.ATT.COM (s.l.jones) (01/19/90)
Does anybody out there know, off hand, what the undocumented DOS call 5E01 does? Should I care? How does somebody find out these things? Thanks in advance, -- S. Luke Jones, luke@mtung.att.com or ...!att!mtung!luke 201/957-2733 AT&T Inf###Bell Labs, Rm. MT 2E-337, 200 Laurel Ave., Middletown, NJ 07748 DISCLAIMER: the opinions presented herein are solely my own, *NOT* AT&T's. "System Test? That's for idiots!" --- me, misquoting "Dirty" Harry Calahan
geoff@hinode.East.Sun.COM (Geoff Arnold @ Sun BOS - R.H. coast near the top) (01/19/90)
Quoth luke@mtuno.ATT.COM (s.l.jones) (in <2790@mtuno.ATT.COM>):
#Does anybody out there know, off hand, what the
#undocumented DOS call 5E01 does? Should I care?
It's not to difficult to guess:
---------------------------------------------
INT 21 - DOS 3.1 + Microsoft Networks - SET MACHINE NAME
AX = 5E01h
CH = 00h undefine name
<> 0 define name
CL = name number
DS:DX -> ASCIZ name
---------------------------------------------
(Note: the "name number" is the number returned by 5E00h in CL.)
#How does somebody find out these things?
From "the interrupt list". Here's the availability info from the
INTERRUP.1ST readme:
The newest release of this list is available in these places (please do not
ask me to email it, it is just too large for that):
On the ARPAnet, by standard anonymous FTP from CS.CMU.EDU [128.2.222.173].
Change to directory /afs/cs.cmu.edu/user/ralf/pub and get the file
interrup.zip which is a link to the current version. You MUST change
directory first because of the way CMU's anonymous FTP works. ZIP
unarchivers for MSDOS and BSD Unix are available in the "zip"
subdirectory.
On FIDOnet, from The Gas Passer BBS 1:129/46 1-412-648-6326 1200/2400/9600 HST
as file INTERnyy.ZIP, where nyy stands for release 'n' of year 'yy',
in file area #18 (User Uploads) or #9 (Miscellaneous Goodies). ZIP
executables are in file area #19. First-time callers may download.
The list is also posted to USEnet in comp.binaries.ibm.pc about three times per
year, concurrent with a new release of the list. Since comp.binaries.ibm.pc is
archived, you will be able to find a fairly recent release in the various UUCP
archives.
Secondary Distribution Points (the list will be available here within a day or
so of release):
ARPA: on WSMR-SIMTEL20.ARMY.MIL [26.2.0.74] as file INTERnyy.ARC in directory
PD1:<MSDOS.SYSUTL>, where nyy stands for release n of year yy. Note
that you must use mode "tenex" or "type L 8" to successfully FTP the
file.
FIDO: SyncPoint BBS 1-301-682-2731 File Requests.
First-time callers may download.
Additional Distribution Points:
BITnet: you may retrieve the copy on WSMR-SIMTEL20.ARMY.MIL via the following
automated mail servers:
(in the US) LISTSERV@RPIECS (alias VM.ECS.RPI.EDU)
LISTSERV@NDSUVM1 (alias VM1.NODAK.EDU)
(in Europe) TRICKLE at TREARN (Turkey)
TRICKLE at IMIPOLI (Italy)
TRICKLE at DB0FUB11 (Germany)
TRICKLE at DKTC11 (Denmark)
TRICKLE at AWIWUW11 (Austria)
LISTSERV at FINTUVM (Finland)
CompuServe: on the IBM Forum as INTnyy.*
Geoff Arnold, PC-NFS architect, Sun Microsystems. (geoff@East.Sun.COM)
-----------
"Always mistrust anyone who claims that ANYTHING is 'perfect'"
(My 12-year old daughter Katie. Out of the mouths....)andrews@hpcupt1.HP.COM (Edward E. Andrews) (01/20/90)
From the official guide to undocument DOS functions: INT 21 - DOS 3.1 + Microsoft Networks - SET MACHINE NAME AX = 5E01h DS:DX -> ASCIZ name CL = name number CH = ??? However, this function is documented.
tcm@srhqla.SR.COM (Tim Meighan) (01/20/90)
In article <2790@mtuno.ATT.COM> luke@mtuno.ATT.COM (s.l.jones) writes: >Does anybody out there know, off hand, what the >undocumented DOS call 5E01 does? Should I care? >How does somebody find out these things? The book DOS PROGRAMMER'S REFERENCE (published by Que) contains a complete reference section that includes the undocumented DOS functions. Of course, using them will make your tongue cleave to the roof of your mouth. (Worse, your program may break on the next release of DOS.) Tim Meighan Silent Radio "I wanted it frozen, and you COOKED it!" -Lynda Barry
Ralf.Brown@B.GP.CS.CMU.EDU (01/20/90)
In article <1249@srhqla.SR.COM>, tcm@srhqla.SR.COM (Tim Meighan) wrote: }The book DOS PROGRAMMER'S REFERENCE (published by Que) contains a complete }reference section that includes the undocumented DOS functions. And, as I noticed while glancing through it in a bookstore, at least part of the info on undocumented DOS functions was copied (verbatim!) from an early- 1988 version of the interrupt list I maintain. If you want a much more complete version of the info, get an up-to-date copy of the interrupt list (PD1:<MSDOS.SYSUTL>INTER190.ARC on SIMTEL20 or interrup.zip in /afs/cs/user/ralf/pub on CS.CMU.EDU [128.2.222.173]; hopefully coming across comp.binaries.ibm.pc sometime soon). -- UUCP: {ucbvax,harvard}!cs.cmu.edu!ralf -=- 412-268-3053 (school) -=- FAX: ask ARPA: ralf@cs.cmu.edu BIT: ralf%cs.cmu.edu@CMUCCVMA FIDO: Ralf Brown 1:129/46 "How to Prove It" by Dana Angluin Disclaimer? I claimed something? 14. proof by importance: A large body of useful consequences all follow from the proposition in question.