
       **  Programmer's Technical Reference for MSDOS and the IBM PC **
                USA copyright TXG 392-616  ALL RIGHTS RESERVED
Ĵ DOSREF (tm) 
                     ISBN 1-878830-02-3 (disk-based text)
                    Copyright (c) 1987, 1992 Dave Williams
                        Ŀ
                         Shareware Version, 01/12/92 
                          Please Register Your Copy  
                        


                                 C R E D I T S

 The information presented here was gathered from megabytes of files found on
BBS systems, conversations on a dozen different BBS systems, correspondence,
and every reference book I could get my hands on. On occasion, a number of
prestigious references didn't agree with each other. Where this has happened, I
have used the latest references. There is too much information here for me to
verify every fact personally. I have used my own judgement as to the
reliability of the sources.

 I've been selling copies of the Reference since October 1987.  The original
basis for the Reference came from Peter Norton's "Programmer's Guide to the
IBM PC" and the original Janet Jack interrupt list circa sometime 1986, as
updated by Ross Greenberg. Anyway, I've prepared a list of the sources I've
used for the Reference to clear up any ambiguities.



Tools used in preparing this book:


Microsoft SymDeb, the final gasp of venerable DEBUG.COM and a fine program.

Microsoft CodeView, huge and awkward though it may be.

V Communications Sourcer, the only effective disassembler I've found.



References used in preparing this book:


AST EEMS Technical Reference Manual v3.2
        documents 020022-001B and 000408-001B
        provided by AST Corporation, 1987

AT&T 6300 Plus Hardware Reference Manual
        p/n 999-300-194IS
        from AT&T Corp, 1985 (before the Death Star logo, yet...)

Creative Labs Sound Blaster User Reference Manual
        copr. 1989

Data General Programmer's Reference for MS-DOS, Rev.3
        Data General Corporation             (covers through DOS 3.0)
        p/n 069-100157 rev 00 May 1986

Digital Research DR-DOS System and Programmer's Guide v3.32
        Digital Research Corporation 1988
        comment: This manual does not cover the extended disk partition access,
                 file password protection, or any of the other goodies
                 provided in DR-DOS. In fact, it not only doesn't cover the
                 extended features, it doesn't completely cover DOS calls
                 documented by IBM. It does have an extensive section on
                 customizing DR-DOS for use from ROM.

Digital Research DR-DOS User's Guide v3.32
        Digital Research Corporation 1988

Digital Research DR-DOS Reference Guide v3.32
        Digital Research Corporation 1988

Digital Research DR-DOS Users and Reference Guide v3.40
        Digital Research Corporation, January 1989

Digital Research DR Multiuser DOS Users and Reference Guide v5.0
        Digital Research Corporation, 1991

Digital Research DR-DOS Users and Reference Guide v5.0
        Digital Research Corporation, 1991

DPMI 0.9 Specification
        Intel Corp, 1990

DPMI 1.0 Specification
        Intel Corp, 1991

An Introduction to the DOS Protected Mode Interface
        Software Focus Group
        Intel Corp, March 1991   order # 240787-002

IBM DOS Operations Manual Version 2.00
        IBM Corp, 1983

IBM DOS Operations Manual Version 2.10
        IBM Corp, 1983

IBM DOS Operations Manual Version 3.1
        IBM Corp, November 1984

IBM DOS Operations Manual Version 3.3
        IBM Corp, April 1987

IBM DOS Technical Reference, Version 4.0
        IBM Corp, 1988

IBM DOS Command Reference, Version 4.0
        p/n 6280254
        IBM Corp, 1988

IBM PC Local Area Network Program Version 1.20
        IBM Corp, April 1987

IBM Technical Reference
        Options and Adapters - Enhanced Graphics Adapter
        p/n 6280131  IBM Publications Aug 1984

IBM Technical Reference
        Personal Computer
        p/n 6322507 IBM Publications

IBM Technical Reference
        Personal Computer - PCjr
        p/n 1502293 IBM Publications

LANtastic Programmer's Information Package, 2/21/89

Logitech Mouse Programmer's Toolkit
        Logitech Corp. 1986

Lotus-Intel-Microsoft Expanded Memory Specification Version 3.20
        part number 300275-003
        provided by Intel Corp.  September, 1985

Lotus-Intel-Microsoft Expanded Memory Specification 4.0
        document 300275-005
        provided by Intel Corp.  October 1987

Lotus-Intel-Microsoft Expanded Memory Specification 4.0
EMS Toolkit for C Developers
        document 302243-001
        provided by Intel Corp, February 1990

Microsoft - various documents provided to MS 5.0 beta testers

Microsoft Extended Memory Specification v2.00
        provided by Microsoft Corporation,  1988

Microsoft Mouse Technical Reference
        Microsoft Press, 1989

Mouse Systems Programmer's Toolkit
        p/n 302449-001 Rev A, 1989
        p/n 302375-100, 1989
        p/n 302446-100, 1989

MS-DOS Programmer's Reference                (covers through DOS 2.00)
        by Microsoft
        p/n 135555-001 Intel Corp. 1984

MS-DOS 5.0 Programmer's Reference            (covers DOS 5.0 only)
        by Microsoft
        Microsoft Press 1991, ISBN 1-55615-329-5

Phar Lap Virtual Control Program Interface (VCPI) Specification v1.0
        Phar Lap Software 1989

Tandy 1000 TX Technical Reference Manual
        Tandy Corp.
        p/n 25-1514  Tandy Corp 1987

The Software Link
        PC-MOS 4.1 Programmer's Reference

Toshiba 1000 Technical Reference Manual
        Toshiba Corp. of America 1987

Tseng Labs EVA Chipset Programming Guide
        Tseng Labs, 1986

X3.4-1977: American National Standard Code for Information Interchange
        by American National Standards Institute (ANSI)
        New York, NY  1977

Weitek ABACUS Software Designer's Guide, Doc 8967
        September 1989

Wendin, Inc
        Wendin-DOS Programmer's Reference

**********************

ATI EGA Wonder Operation Manual
        ATI Technologies, 1987

Everex EV-650 EGA Reference Guide, Version 1.00
        Everex Computer, 1986

FastCard IV User Manual
        Peripheral Marketing Inc.
        p/n 0527        Jan 1987

Hercules Graphics Card User's Manual
        Hercules Computer Technology
        1983

Hercules Graphics Card Plus Owner's Manual
        Hercules Computer Technology
        Model GB112  1987

JDR B-3101 FLoppy Disk Drive Card User's Guide
        470.03002 version 1.00    1988

LANtastic 2.46 Installation Guide
        Artisoft, 1988

LANtastic 3.01 Installation Guide
        Artisoft, 1990

LANtastic 4.0 beta Installation Guide
        Artisoft, 1991

LapLink Release 2 User's Manual
        Traveling Software, 1987

LapLink Release 3 User's Manual
        Traveling Software, 1989

Logitech EGA Reference Manual, EGA+Mouse Board

Mirage Super VGA TVGA-8900 User's Manual

MPC Operations Guide,  Manual #1023
        Columbia Data Products, Inc.
        CDP  1983

Microcomputer Products - 1987 Data Book
        NEC Electronics, Inc.
        p/n 500105      Aug 1987

NEC uPD70108/70116 Microprocessor User's Manual
        p/n 500350      October 1986
        provided by NEC Electronics, Inc.

Novell Advanced Netware System Manager's Reference

pcAnywhere User's Guide v2.00
        Dynamic Microprocessor Associates, Inc  1986

S-286 User Manual, version 2
        Link Computer, 1988

STB VGA Extra/EM
        EM-16 BIOS Features
        STB Corp.

TesSeRact v1.0 documentation

TCXL 5.1 documentation

Toshiba ND352/356 3.5" Diskette Drive Installation Notes
        document number 87019   March 1988
        Toshiba America Corporation

Tseng Labs
        EVA, EVA/480 BIOS Guide
        November 10, 1988

VESA Toolkit v2.0
        summer 1991

VideoTrax Installation Guide
        Alpha Micro, 1987

******************

Advanced MSDOS
        Ray Duncan
        Microsoft Press  1986

Assembly Language Programming for the IBM Personal Computer
        David J. Bradley
        Prentice-Hall   1984

Assembly Language Subroutines for MSDOS Computers
        Leo J. Scanlon
        TAB Books   1986

Atari ST Internals
        Gerits, English, & Bruckmann
        Abacus Software  1985

Compute!'s Guide to Assembly Language Programming on the IBM PC
        COMPUTE! Publications

Compute!'s Mapping the IBM PC and PCjr
        Russ Davis
        COMPUTE! Publications

DOS Power Tools
        Paul Somerson
        Bantam Books  1988

DOS: The Complete Reference
        Kris Jamsa
        Osborne/McGraw-Hill  1987

Exploring the IBM PCjr
        Peter Norton
        Microsoft Press  1984

Discovering the IBM PCjr
        Peter Norton
        Microsoft Press  1984

IBM Video Subsystems
        Richard Wilton
        Microsoft Press  1988

Inside the IBM PC
        Peter Norton

Mapping the IBM PC
        Russ Davies/Compute! Magazine
        Compute! Books   1986

Memory Resident Utilities, Interrupts, and Disk Management With MS & PC DOS
        Michael Hyman
        MIS Press  1987

Microcomputer Interfacing
        Bruce A. Artwick
        Prentice Hall   1980

Microsoft Systems Journal - March 1987
        "Expanded Memory: Writing Programs that Break the 640k Barrier"
        Marion Hansen, Bill Krueger, Nick Stuecklen

MS-DOS Encyclopedia
        Ray Duncan
        Microsoft Press 1988  (first edition)

Network Programming in C
        Barry Nance  (barryn on BIX)
        Que, 1990

Operating Systems Design and Implementation
        Arthur S. Tanenbaum
        Prentice Hall 1987

Programmer's Guide to the IBM PC
        Peter Norton
        Microsoft Press  1985

Programmer's Problem Solver for the IBM PC, XT, & AT
        Robert Jourdain
        Prentice Hall  1986

Running MS-DOS
        Van Wolverton
        Microsoft Press

Supercharging MS-DOS
        Van Volverton
        Microsoft Press  1986

The 8080a Bugbook
        Tony-Larsen-Titus
        Howard W. Sams   1977

The 8086 Book
        Russell Rector and George Alexy
        Osborne/McGraw-Hill  1980

The IBM Personal Computer from the Inside Out
        Murray Sargent III and Richard L. Shoemaker
        Addison-Wesley  1984

The IBM ROM BIOS
        Ray Duncan
        Microsoft Press  1988

The Serious Assembler
        Charles A. Crayne and Dian Gerard
        Baen Books   1985

Tricks of the MS-DOS Masters
        Waite Group
        Howard W. Sams  1987

Turbo Pascal Express
        Robert Jourdain
        Brady Books, 1987

Writing DOS Device Drivers in C
        Adams/Tondo
        Prentice Hall, 1990

***********************

Microsoft Macro Assembler 4.0, 5.1 documentation

Microsoft C 4.0 documentation

Borland Turbo Pascal 3.02a and 5.0 documentation, Turbo C 2.0 documentation

Novell SFT System Administrator's Reference

***************************

 Western Digital, Rodime, Miniscribe, Microscience, Adaptec, Storage
Technologies, and Connor Peripherals were kind enough to send spec sheets on
most of their products which helped to expand and verify the hard drive
information in Appendix 6.

***************************

 A large amount of miscellaneous information came from various computer
magazines. Documenting what came from where would be an experience all its
own. A great deal of information came from articles by Michael Mefford and
Charles Petzold of PC Magazine, and Neil Rubenking, Jeff Duntemann, and
Ray Duncan, who get around a lot.

   Byte
        ( Byte's kinda weird. They have some really neat, well-researched
          stuff interspersed with mindless drivel.  Still, they print some
          stuff you absolutely, positively won't find anywhere else. )

   C'T (Computer Technik)
        ( If you read German, this one is sorta like PC Magazine was in its
          heyday. )

   Computer Language
        ( I never decided if I liked CL or not.  Maybe I'm not the sort of
          programmer they're writing for... )

   Computer Shopper
        ( Though primarily advertising, some information sneaks in from time
          to time. )

   Dr. Dobb's Journal
        ( I always thought the old title, "Doctor Dobbs' Journal of Computer
          Calisthenics and Orthodontia - Running Light Without Overbyte" was
          a killer name, but nobody asked me. )

   InfoWorld
        ( I never really figured out how a weekly magazine could so often be
          both late *and* wrong with their stories, but IW tries hard. Still,
          you often hear about rumblings you'd never find out about in the
          slicks. The National Enquirer of the computer world? )

   Micro Cornucopia
        ( R.I.P - it was great while it lasted. )

   Microsoft Systems Journal
        ( Hideously expensive and mostly oriented to Windows and OS/2, the
          early issues had some really good stuff )

   Midnight Engineering
        ( This one's hard to classify.  It's hardcore computer with a dash
          of entrepreneurship, bizarre as the combination may sound.  I like
          it when I can find it. )

   PC Magazine
        ( Despite their new "management format" in mid '89, PC Mag still has
          some good techie stuff from time to time. I guess the bean counters
          thought managers were more important than programmers. )

   PC Resource
        ( There was rarely anything of interest in PC Resource, but every
          now and then I found something. Now defunct. )

   PC Tech Journal
        ( "Tell 'em what you're going to say, tell 'em what you're saying, tell
          'em what you just said." - and don't send us no steenking submissions
          unless they're in WordPerfect format! Despite their fascist policies,
          every now and then they printed something useful. The Little Rock
          Wild Bunch refered to it as "PC Tech Urinal," an apt monicker. Now
          defunct. )

   PC Techniques
        ( This is the magazine PC Tech Journal tried to advertise itself as.
          Pure programming, written by programmers for programmers, without
          too many "journalists" pissing in the text. Try it! )

   Programmer's Journal
        ( This is a nice magazine, though expensive. )

   Tech Specialist
        ( One of the few really good magazines for bit-twiddlers.  Haven't
          seen a GUI phone-dialer shootout yet! )

****************************

various computer bulletin board systems, including

Byte Information Exchange (BIX)
 (check out ibm.dos/old.secrets.2 and ibm.dos/secrets.3)

 Effusive thanks to the gang in the ibm.exchange - these guys are *sharp*.
 In alphabetic order:

 barryn, billn, daiken, dgh, dmick, dnanian, dondumitru, drifkind, geary,
 glass, gmussar, greenber, hfishman, j_vanderbilt, jdunlap, jlussmeyer, johnf,
 jsloman, jsprowl, jswitzer, jrichards, mike123, rbabcock, rbrukardt, rduncan,
 roedy, sjgrant, skluger, terjem, twagner, wardc, wcowley, and all the guys
 whose names forgot... <grin>

Compuserve IBM SIG

FIDOnet international network       (various technical echos)

GEnie IBM RT and Borland RT

PCanada BBS system                  (Toronto, Canada)

RIME PCRelay international network  (IBM, Technical, Programming echos)

TelePath

*********************************

The following text files were of use. Bear in mind that some of them may be
seen under several different names. The author's name is given as it appears
in the documentation (if any).

10H-BUG  ASM     4680  29/01/87 bug in 2.x int 21h/fn10h             Ray Duncan

1PT4MB   INF     5120   3/10/87 1.44Mb drives         Clyde Washburn 70305,1211

2EH      ASM     2969   3/03/87 info on undoc'd int 2Eh           David Gwillim

386BUG   ARC     9216  15/10/87 bug in early 80386 chips           Compaq Corp.

8086     3      10572   5/12/88 dump of Fidonet?? 8086 conf??         <no name>

8259     ARC     2826  15/03/88 info on 8259 chip                     <no name>

APICALLS ARC    11481   8/01/88 OS/2 API function call list          Bill Earle

ASM-ADRS ARC     6144  20/12/87 low memory vectors         Malcolm McCorquodale

ATCMDS   ARC     3072  20/03/88 Hayes 1200 baud command set           <no name>

BACKDOOR UPL    26115  11/12/89 "back door" through PSP            John Switzer

BIOSDOC  ARC    34816   3/11/87 very good function list         David E. Powell

BIXDOS1  ARC   155648  14/12/87 BIX "MSDOS Secrets" #1                <no name>

BUG40DOS ARC     3200  18/08/88 bugs in DOS 4.0                          "Doug"

CAS      ARC    33792  27/10/88 Communicating Applications Standard 1.0A
                                                                DCA, Intel Corp

CCPM86   ARC    68238  14/10/89 list of Concurrent CP/M calls         <no name>

CDOS     ARC    35584  18/07/89 list of Concurrent DOS calls         Guy Scharf

CDOS2_   ARC   227200  18/07/89 list of Concurrent DOS calls      J. F. Jankura

CDOSCALL ARC    19968  18/07/89 list of Concurrent DOS calls      J. F. Jankura

CUFEXT   ARC    13228  13/03/90 common file extensions               J.W. Rider

DEBUGTUT ARC    15655  23/04/88 DEBUG tutorial                        <no name>
                                                        possibly David Whitman?

DIAGNOSE ARC    14336   1/01/86 memory errcodes  Jerry Schneider, Arnold Kischi

DISK144  ARC    23086  16/10/88 info on 1.44Mb diskettes              <no name>

DISKTYPE ARC     5073  14/04/88 IBM floppy formats                    <no name>

DOOM     ARC     9216  29/09/88 hard drive information                <no name>

DOS-SIZE ARC      787  27/03/88 size of DOS files 1.1-3.1             <no name>

DOS3TXT  ARX     9168  31/07/85 list of DOS/BIOS ints, data areas   Dan Rollins

DOS32    ARC    17408  31/05/88 command list for DOS 3.2              <no name>

DOS3BUGS ARC     5639  15/10/87 acknowledged bugs in DOS 3.0-3.2      IBM Corp.

DOS40    ARC    15625  22/07/88 IBM announcement of DOS 4.0           IBM Corp.

DOS401   ARC    18178  19/10/88 errors in DOS 4.0                     IBM Corp.

DOS40B   ARC    27008  26/08/88 Compuserve thread on DOS 4.0          <no name>

DOS40FAT ARC     1510  11/09/88 DOS 4.0 File Allocation Table       Mike Austin

DOS40FUN ZOO     3410  31/12/99 DOS 4.0 int 24, 25, etc               Pat Myrto

DOS40HLP ARC    53376  28/08/88 DOS 4.0 command set                   <no name>

DOS40TXT ARC    46169  16/10/88 DOS 4.0 problems & info               <no name>

DOS4TIPS ARC     1735  19/09/88 problems with DOS 4.0                 IBM Corp.

DOSBUG   TXT     1024  15/10/87 info on 2.0 volume label              <no name>

DOSGUIDE ARC    21344  21/02/88 DOS tutorial                Carrington B. Dixon

DOSINT   ARC     4201  15/03/88 list of DOS 2.0 function calls     John Chapman

DOSNOTES ARC     5052  15/03/88 info on DOS undoc fns.                <no name>

DOSREF   ARC     9216  21/01/87 partial list of PC BIOS calls         <no name>

DOSREF   ARC    62052  23/08/86 device driver info                    "Cracker"

DOSTIPS  ARC    28926  15/03/88 info on DOS                        John Chapman

DOSTIPS1 ARC   159657  25/11/85 various DOS info                   Dean R. Wood

DOSTIPS3 ARC    59264  25/01/88 various DOS tips (different)       Dean R. Wood

DOSUNDOC ARC     3840  03/05/86 one of the very first interrupt lists
                                                           Spyros Sakellariadis

DRIVPARM ARC    11264   7/01/88 info on DRIVPARM parameters      Joan Friendman

EGATEK   ARC     8704  15/03/88 IBM EGA registers                   Bill Frantz

EMS40BIX ARC     3802  21/09/87 BIX announcement of EMS 4.0                 BIX

ENVIRONM ARC     4255  18/09/88 info on DOS environment           Jan Fagerholm

ESC_CODE ARC     3072   3/10/88 Laserjet setup codes                     S. Noh

FILEIO   ARC     8192  24/07/88 TSRs and INDOS flag                   <no name>

FLOPPIES ARC     9216   2/11/87 info on floppy media                 Ted Jensen

FOSSIL   ARC     9031  15/07/87 list of FOSSIL functions       Vincent Periello

FXN4BH   ASM     4503   1/01/80 odd 4Bh behavior                     Ray Duncan

HAYESET2 ARC     6479   4/09/86 modem commands         Ruth Lubow, Fowler Brown

HD-DATA  ARC     4096  19/07/87 list of hard drives & specs           <no name>
                                I've seen many similar files. I believe the
                                original may have been a file or bulletin on
                                Sparta BBS

HDINFO   ARC    11264  19/11/87 updated version of above, evidently by someone
                                else                                  <no name>

HDNOISE  ARC     4159  11/11/87 hard disk information             Clancy Malloy

HDTIPS   ARC     9660  11/10/87 hard disk information              Barry Gordon

IBMTAB   ARC     7882  15/03/88 general IBM PC tech info            John S. Lou

IBMTECH  ARC   136064   4/11/88 error codes, other info               IBM Corp.

INT-MDOS ARC    20682  31/07/85 one of the original INT lists    Ross Greenberg

INTER189 LZH   156368  25/06/89 interrupt list                       Ralf Brown

INTERRUP ARC   157440  19/09/88 interrupt vector list                Ralf Brown

INTERRPT ARC    42632   4/04/88 interrupt vector list         Marshall Presnell
                                this is a very nice list and some programming
                                information. If I'd come across it way back
                                then it would have saved a ton of typing <sigh>

JARGON   ARC    49274  16/07/88 dictionary of computer terms          <no name>

LE_MCLCK.ASM     3489   3/27/86  undoc'd Leading Edge BIOS fns      Bob Plouffe

LIM-40   ARC    21504  15/10/87 info on LIM 4.0                Stephen Satchell

LISTINTS ARC     6144   3/12/87 small interrupt list                  <no name>

MCB      ARC     5120  24/07/88 info on DOS Memory Control Blocks David Gwillim

MNP-TEXT ARC     6144  30/09/88 MNP modem info                       Mike Focke

MOUSENG  ARC    10240  13/08/88 Norton Guide file for mouse programming, with
                                C examples                            <no name>

MSLOOKUP ARC    58368  25/12/87 interrupt and function listing     Frank Bonita

MS-OS2   ARC    25600  15/10/87 MS press release on OS/2        Microsoft Corp.

MSINT125 ARC    48128  12/01/88 interrupt vector listing             Ralf Brown

NETBIOS  ARC    17280  29/10/88 NetBIOS tutorial & summary         Tom Thompson

NOVELINT ARC     4531  18/10/88 NetBIOS calls                        Marc Guyot

OCOM_520 ARC    53632  19/08/88 FOSSIL tutorial and functions        Rick Moore

ODDITY   ARC     3072  24/07/88 int 2Eh description               Daniel Briggs

PINS     ARC     3072  18/01/88 pinouts of various connectors         <no name>

QUES40   ARC     9081   1/09/88 info on DOS 4.0                       IBM Corp.

RAW_COOK ARC     2048  15/10/87 info on DOS raw and cooked modes      <no name>

RESETSWT TXT     3584  23/01/86 add a reset switch to a PC          Don Jenkins

RLLHINTS ARC    12288  17/10/87 RLL controller info                 Steve Sneed

RLLMISC  ARC     5120  17/10/87 info on RLL controllers        Richard Driggers

RLLSTORY ARC     9718  31/07/88 good info on RLL coding           Pete Holzmann

SEAGATE  ARC     2048   3/03/88 specs for many Seagate drives        Jim McKown

SECRETS2 ARC   179625  17/04/88 BIX "MS-DOS Secrets" #2               <no name>

SERCBL2  ARC     4372  16/10/88 serial cable pinouts                   Lee Zeis

SM2400   ARC     2296   9/08/86 Hayes 2400 baud command set           <no name>

SPOOL   DOC     29704  03/28/89 Versa-Spool API                     Jeff Newbro

SSTEP    ARC     2300  11/07/89 explanation of CPU single-step      Ed Burnette

ST225    ARC    11264   7/10/87 optimizing ST225 and WD cont.         Neil Erbe

TANDON   ARC     3612  21/02/88 info on Tandon drives             David Welcher

TECH     ARC    27827   8/05/88 misc tech info - Fidonet?             <no name>

TOOLS    C      14032   8/10/89 Grid laptop special functions  Fredrick Coffman

TOS               938  24/03/88 TOS function calls                Mike Crawford

TRYST    ARC    29312  29/10/88 DOS and hard disk info               Amy Goebel

UNDOCINT 21H     7168  14/04/87 undocumented DOS calls           Peter Holzmann

VESA     TXT    41269  01/17/90 VESA standard                              VESA

VGAKIT   DOC     7634  05/04/90 VGA programming kit                John Bridges

VGAPIN   ARC     1252  24/10/88 VGA pinout                               "Mike"

WD-27X   ARC     6144  10/10/87 WD 27X HD controller setup        Steve Shelton

WDCONFIG ARC     5504  11/10/87 WD-1002 WXS setup              Richard Driggers

WDCONT   ARC    11264  25/12/87 info on WD hard disk controllers    Peter Fales

XEB1210  ARC     7947  18/07/87 Xebec HD controller setup      Richard Driggers

XEBEC    ARC     1036  30/04/88 setup for Xebec HD controller  Richard Driggers

XEBECTEC ARC     1834  30/04/88 setup for Xebec 1210                  <no name>

XGADEMO  LZH    23552  01/27/91 IBM XGA programming info v.50        Bert Tyler

XMS      ARC    75776   1/08/88 Microsoft Extended Memory Specification 1.0
                                                          Microsoft Corporation

XTCHARTS ARC    12416   4/11/88 ports, charts                         <no name>

                      **********************************

NBRCV.C      Paul McGinnis      NetBIOS API calls

DESQ10.ASM   James H. LeMay     DesqView API calls

NETTUT.DOC   Charles L. Hedrick TCP/IP network

CED10D       Chris Dunford      CED interrupt calls

LANTSTIC.DOC LANtastic adware   peer-to-peer LAN calls

GLOSSARY.ARC no author name     computer terms

4DOS.DOC     Tom Rawson         4DOS int 2Eh, 2Fh calls, SHELL= bug


DOSREF isn't a tutorial, and sometimes you need a tutorial.  Microsoft has 
finally written a half-decent one - The MS-DOS Programmer's Reference,
Microsoft Press, 1991, ISBN 1-55615-329-5.  This is the DOS 5.0 Tech Ref.
It covers data structures and DOS programming concepts clearly.  However,
it has no information on other DOS versions, nor does it (of course) cover 
undocumented calls.

                     ------------------------------------

 Nothing gets written in a vacuum, and I'd like to express my thanks to all
the people who have been good enough to furnish information and support:
   (in alphabetical order)

Tommy Apple, Mike Crawford, Herman Diagostino, Joe Felix, Ron Melson,
Denis Murphy, & Ben Sansing,
        who all loaned me documentation and reference material for so long
        that some of them have forgotten to ask for their stuff back


 And those users who were kind enough to help out:

Mike Blaszczak, MA:                                        (blaszczak on BIX)
        who went rampaging through work and client's sites to find and
        document various model ID bytes, plus plenty of information on MS OBJ
        file formats

Carl Bretteville, Drammen Norway:
        who sent me a complete Concurrent DOS Programmer's Reference,
        considerably enriching the Norwegian postal service thereby

Herman Diagostino, Manassas VA:
        who worked up the TECHMENU menu file and provided a copy of the
        rare IBM DOS 4.0 Technical Reference and a copy of the original MSDOS
        Encyclopedia from Microsoft, info on the Pelican 5.5mb floppy drive,
        IBM DOS 4.0 command reference, many hard drive specs

James Drenter, Davenport IA:
        additional info on int 1Ch

David Dorling, Buderim, Australia:
        found one embarrassing error in the device driver info and provided
        many expansions and clarifications

Chris Dunford, Columbia MD:                                (CIS 76703,2002)
        who sent me a copy of the PCED 2.0 API

Steve Grant, Jersey City NJ:                               (sjgrant on BIX)
        who granted permission to include his excellent SYSID program with my
        distribution disks, furnished several model IDs

Roedy Green, Vancouver BC Canada:                          (roedy on BIX)
        many names and addresses for Appendix 5, serial and parallel port
        details and cabling, granted permission to include some of his very
        educational essays with my distribution disks, plus many details on
        DOS disk I/O

Michael Koepke, Wood Dale IL:
        pinouts on EGA feature connector, PS/2 keyboard connector, DR-DOS
        programming information, much info on Digital's DR-DOS

Curt Lankford, Little Rock, AR:
        loaned his copy of the AT&T 6300 Plus Hardware Technical Reference

Alan R. Levinstone, Garland TX:
        80286 LOADALL instruction
        BIOS Data Area floppy control parameters 40:8B, 40:8F, 40:90

Brian Long, Twyford UK:
        provided a copy of the then-nearly-unavailable DPMI 0.9 specification,
        plus port and address info

Keith Meade, Rochester MN:                                 (keithm on BIX)
        who provided a Microsoft Windows 2.11 SDK, copy of IBM TopView

Feico Nater, Hengelo, Netherlands:
        additions to FCB calls, several pages of expansions and clarifications

Bruce Nevins, Tucson AZ:                                   (bnevins on BIX)
        Irwin low-level tape drive info, DEC PC info

Patrick O'Riva, San Jose CA:
        info on what happens to the interleave when the BIOS is finished, and
        for his interesting online assembly-language magazine

Klaus Overhage, Stuttgart W.Germany:
        FANSI-CONSOLE system calls, and translating the TechRef into German

John Richards, England:                                    (jrichards on BIX)
        European DOS 4.0 information

Ben Sansing, Little Rock AR:
        ANSI.SYS information, documentation for the NEC V20/30 chips, reported
        error in register chart in Chapter 4, loaned his copy of PC-MOS/386
        for testing

Hans Schleichert, Marburg West Germany:
        information on int 2Fh, fn OAEh (internal DOS commands). Good thing
        I took some German in high school... <grin>

John Switzer, CA:                                          (jswitzer on BIX)
        who allowed me to include his discoveries on alternate DOS entries
        and file mysteries. (see BACKDOOR.ZIP on BIX, or Oct 1990 Dr. Dobbs')

Fred Thompson, Rapid City SD:
        loaned his Sound Blaster manual, provided much info on graphics
        programming

Matt Trask:                                                (matt.trask on BIX)
        who donated a complete copy of the TopView Programmer's Reference

Richard Vogh, Marietta GA:
        found several embarrassing errors in the boot sector chart in Chapter
        8. The shame! The shame! <sigh>

Jim Wenzel, North Little Rock AR:
        more PC model ID codes, loaned his copy of the Windows 3.0 SDK


The Software Link, Atlanta GA:
        provided a review copy of PC/MOS-386 and the programming guide

Digital Research, Monterrey CA:
        provided review copies of DR-DOS 5.0 and DRMDOS

Microsoft Corporation, Redmond WA:
        for beta-test versions of DOS 5.0, Windows 3.1, other products,
        information on DOS 5 and the DOSSHELL API

 Special thanks to Chris Dunford, who donated his "CED" program to the public
domain. If it wasn't for CED, I would likely have abandoned MSDOS machines
entirely and bought a Macin...uh... something else; and to Haruyasu Yoshizaki
for allowing unrestricted use of his LHarc program used to compress the files
on these diskettes.


                                                        Dave Williams
                                                    --------------------
                                                      Jacksonville, AR


