Form Letter for Canadian and American users
Latest revision: 15 February 2017
Dear ATP EMTP-interested party:
The Alternative Transients Program (ATP) is the most widely used version of the Electromagnetic Transients program ( EMTP ) in
the world today --- by far! In no small part, the acceptance of ATP is due to its availability to nearly everyone in the world
free of royalty, and its compatibility with the computers of most common interest.
EMTP was developed in the public domain at BPA (the Bonneville Power Administration) prior to the commercial initiative in 1984
by DCG (the EMTP Development Coordination Group, with which BPA had no connection since expiration of the associated agreement on
the last day of 1987) and EPRI (the Electric Power Research Institute of Palo Alto, California, USA). Whereas BPA work on EMTP
remained in the public domain by U.S. law (FOIA, the Freedom of Information Act), ATP never was in the public domain. It is,
however, available free of all charge to anyone in the world who has not participated voluntarily in the sale or attempted sale
of any electromagnetic transients program (hereafter called "EMTP commerce"). Those who have engaged in EMTP commerce, but now
wish they had not, may contact the user group to learn about conditions of possible pardons.
Membership in EPRI, CEA, or CRIEPI (the latter two being DCG members) does not, by itself, disqualify any organization from
access to ATP, it is important to note. Nor does use of the DCG/EPRI EMTP that is licensed and distributed by EPRI. This is the
significance of the adverb "voluntarily." Clearly, few if any EMTP users control the high-level politics that are associated with
membership in national organizations such as EPRI, CEA, or CRIEPI, so membership alone will not be held against anyone. No
problem exists provided no significant resources (e.g., money, technical advice, computer work, advertizing) have been
contributed directly to the joint DCG/EPRI commercial project.
Commercial competitors no longer are excluded from access to ATP. This is a big change from earlier years. As explained in the
January, 1992, issue of the newsletter (story on pages 8-9), the Can/Am user group has decided to approve the disclosure of ATP
to, and use by, any commercial developer of any competing electromagnetic transients program on the same terms as work of that
commercial developer is made available to the general community of ATP users. This is reciprocity.
An Intel 80386-based (or newer) microcomputer (IBM-standard PC) that supports MS-DOS or DR-DOS is the most common platform for
support of ATP. The user should have more than 2 Mbytes of RAM, at least 10 extra Mbytes on his hard disk, some color-graphic
monitor (yes, EGA is supported, although standard VGA is the most commonly used, and 600 x 800-pixel super VGA looks even
better), and a mouse that is Microsoft-compatible (i.e., the 2-button standard). This is all that it takes to support the Salford
version -- so named because it uses the DOS extender of the University of Salford in England. Other ATP versions are used under
Microsoft Windows 9x, ME, NT, 2000, XP, Vista and Windows 7. Although ATP is available for other computers, any potential user
who is thinking about such alternatives is strongly advised to think again.
Each authorized user of ATP must agree not to disclose any ATP information to others. Practically, this means only that there
must not be disclosure to unauthorized persons and / or organizations. A nondisclosure agreement to this effect must be signed by
each potential user, and approved by the user group, before access to ATP information will be granted.
The sharing of ATP materials among authorized users is encouraged. If one authorized user has newer or better materials than a
second, the first user is encouraged to share with the second.
Consultants and manufacturers who want to use ATP are encouraged to do so provided there is no misrepresentation, particularly to
customers. In the case of commercial design and / or consulting, this means that clients or potential clients must be notified
prominently, and at the earliest opportunity, about the EMTP version that is being used (ATP), its royalty-free nature, and who
licenses its use. If the name DCG or EPRI is mentioned along with EMTP, it must be explained that ATP has no connection with the
commercial product that is licensed by EPRI. Drawing attention of a client to the Web page www.emtp.org is an easy way of
Education is another activity that can profit from ATP use, but only if several rules are carefully followed. First, there must
be no misrepresentation of ATP (same requirement as the preceding paragraph) to potential students in any advertizing for the
course. Second, prior to the disclosure of any ATP materials to any student, that student must be supplied with a copy of this
form letter, he must submit licensing, and his application must be approved by the user group. Third, regarding access to ATP,
all course faculty are subject to the same restrictions as students. If printed advertising for a course mentions ATP, it is
strongly recommended that wording be checked with the user group prior to reproduction in order to avoid any possible
Licensing to use ATP is free of all charge for all who have not engaged in EMTP commerce. Once one is licensed, he is authorized
to obtain ATP materials from anyone (sharing among users is encouraged). This includes floppy disks for ATP itself, all files for
graphical data assembler ATPDRAW, the printed, 850-page ATP Rule Book which documents input data rules, and the 700-page EMTP
Theory Book. To order ATP materials from Portland, see hyperlink below to Dr. Kai-Hwa Ger's order form in Adobe Acrobat PDF
There is an MS-DOS version of ATP for IBM PC XT-compatible computers, and this can be used for Intel microprocessors numbered
8088, 8086, 80186, or 80286. This was very important between early 1987 and September of 1989 when now-Dr. Mustafa Kizilcay
demonstrated success of Salford EMTP at the University of Hannover in Germany. But within two years, Salford EMTP had become so
much better, and 386- or 486-based computers had become so cheap, that even home usage was being switched rapidly. Requests for
the MS-DOS version had shrunken drastically (under 10% of the total) by the end of 1991, and to one or two % by the end of 1992.
The MS-DOS version no longer is being updated. Although the user group still might supply a copy on 1.2-Mbyte floppies, former
low-density (360-Kbyte) service has been eliminated, and the program will remain old (it dates to 1990).
For the historical record, BPA's contribution should be acknowledged. Beginning in the fall of 1991, BPA formally cooperated
with the Can/Am user group on the noncommercial development and use of ATP. This lasted until Dr. Liu's retirement at the end of
May, 2007. Dr. Meyer had retired much earlier (March of 1995), but had continued to work on ATP at BPA as an unpaid volunteer
through early 2004.
Can/Am EMTP News is the name of the quarterly newsletter of the user group. The issues are dated January, April, July, and
October, and all lengths since 1993 have been 20 pages. The newsletter is available free of charge to anyone, whether ATP
licensed or not. Disk files began as WordPerfect 5.1 format, but later were switched to MS Word (.DOC files). Finally, only Adobe
PDF (Portable Document Format) files are released to the general public. These are readable using the free Adobe Acrobat Reader
(click on www.adobe.com/go/getreader to download the latest version). Newsletters are available from several storage sites on the
Internet such as the web site of the European EMTP-ATP Users Group (www.eeug.org) or on the campus of Kyoto University in Kyoto,
operated by the Japanese ATP User Group (www.jaug.jp). Normal publication as just described ended with the April, 2004, issue.
Finally, the European user group EEUG operates a free electronic bulletin board using address firstname.lastname@example.org. Prof.
M. Kizilcay, University of Siegen, is responsible for the operation of that mailing list. This is for ATP-related announcements,
questions, answers, etc. The EEUG has published regularly EEUG News from 1995 until 2001, which contains besides technical
papers, reader's corner and hints for program usage.
Dynamic dimensioning allows actual table space of ATP to be fixed by the user at the start of execution within some very large
limits. This began in mid-October of 1993. Previously, table sizes were fixed as the program was linked, resulting in names such
as TP3 or TP20. These are history. Now, the single TPBIG.EXE satisfies most users.
Foreign EMTP user groups will be granted free access to Can/Am EMTP materials provided they follow compatible rules of operation.
This is important because BPA will exchange EMTP information with foreign user groups that share Can/Am goals. With Dr. Liu's
retirement from BPA in 2007, the sharing of EMTP materials from BPA ended.The most important requirements for such cooperation
are honesty in all dealings (no misrepresentation of ATP availability), a certain size of the user group (currently 10 or more
organizations), and isolation from those who support commercial development. For more details, contact us.
Object files are available for those who have acquired the free GNU FORTRAN compiler g77. Object files are more flexible because
they permit: 1) modification of limiting table sizes; 2) the connection of user-supplied source code; 3) compiled TACS; and 4)
selective correction of program errors. For further details, consult the JAUG (Japanese ATP User Group) storage at Osaka
University. This, in turn, requires a password (available from whatever ATP user group has licensed the user).
Some Japanese computers that are sold within Japan (their domestic market) are based on Intel microprocessors but are NOT
IBM-compatible. Such machines are NOT compatible with Salford EMTP according to the Japanese EMTP Committee at Doshisha
University in Kyoto, Japan. Beware!
Other computers (not Intel-based) are compatible with ATP, of course. In fact, almost any modern computer of practical interest
has been proven to be compatible (more than 30 distinct systems have been tested). But the user group will not distribute such
code to end users. The user group has limited resources that are stretched to cover just the dominant platform: IBM-compatible
PCs. To obtain ATP for another computer, a reader must directly contact an existing user, or some other user group that might
perform the copying service.
A new distribution center for ATP materials opened in Germany during June of 1994. In November of that same year, the first
meeting of a new user group to replace LEC (the Leuven EMTP Center in Belgium, which closed in 1993 due to corruption), was held.
Anyone in the world who is willing and able to pay for the ATP materials can obtain them from this address, just as ATP materials
can be obtained from Dr. Kai-hwa Ger of Portland (see hyperlink below). For more information about ATP usage and services in
E-mail: email@example.com Voice phone: +49 271 740-2499 Fax phone: +49 2738 3486235 EEUG Web page: www.eeug.org Cordially yours,
Co-Chairmen of Canadian/American EMTP User Group Dr. W. Scott Meyer Dr. Tsu-huei Liu 3179 Oak Tree Court West Linn, Oregon
97068 U.S.A E-mail: firstname.lastname@example.org
Update during February of 2017. Much has changed during the past decade although older material remains generally valid.
Consider the way history as passed by writing such as the following:
1) "An Intel 80386-based (or newer) microcomputer (IBM-standard PC) that supports MS-DOS or DR-DOS is the most common platform
for support of ATP." Strictly speaking, this no longer is true. Microsoft has done away with MS-DOS, replacing it by an
emulator named "Command Prompt" of the Start menu. Real MS-DOS or DR-DOS no longer is available on a modern Windows PC. But
Intel remains as the source of the microprocessor that powers computers. As for IBM, it has disappeared from the PC market place,
having sold its PC business to a Chinese manufacturer (the Lenovo brand) years ago.
2) "Consultants and manufacturers ... it must be explained that ATP has no connection with the commercial product that is
licensed by EPRI." EPRI involvement with EMTP is long gone, we have been informed. EPRI no longer is the licensing agent for
what began as DCG/EPRI EMTP. Today, omit mention of EPRI. DCG remains but EPRI has no continuing involvement with EMTP
commerce. Neither do the other 2 organizations of the U.S. government (USBR and WAPA) that joined with BPA in forming DCG in
1984. DCG began with half of its 6 organizations being American. The 3 American organizations no longer participate, from what
3) "This includes floppy disks for ATP itself ..." Floppy disks too are long gone. They simply no longer are being used for
removable storage of a modern PC. Today, CDs continue to be used.
4) "There is an MS-DOS version of ATP for IBM PC XT-compatible computers, and this can be used for Intel microprocessors
numbered 8088, 8086, 80186, or 80286." Pre-80386-based PCs are long gone.
5) "... September of 1989 when now-Dr. Mustafa Kizilcay demonstrated success of Salford ..." Dr. Kizilcay became Professor at
the University of Siegen sometime between the end of our newsletters in 2004 and 2006. Although no long EEUG Chairman, he
remains an innovative force behind EEUG operation.
6) "... such as TP3 or TP20. These are history. Now, the single TPBIG.EXE satisfies most users." True, although there has
been an important extension by Orlando Hevia in Santa Fe, Argentina. His "giga dimensioning" offers tables that are sized an
order of magnitude or more larger than TPBIG.
7) "Other computers (not Intel-based) are compatible with ATP, of course." Do other computers of possible interest still
exist? Computer wars ended in a practical sense when Apple surrendered, ending its use of Motorola microprocessors. Yes, Sun
SPARC might still be sold by Oracle but is of no practical interest for the support of ATP.
8) "Anyone in the world who is willing and able to pay for the ATP materials can obtain them from this ..." Well, except
that ATP licensing is required! Also, the recipient must not live in a country that is black-listed by the U.S. government.
An example would be North Korea.
It is recommended that you print this form letter for your own records before proceeding with the ATP licensing agreement or
order form of Dr. Kai-Hwa Ger in Oregon.
If the preceding form letter has not yet been read carefully, do this before proceeding. Should any detail be unclear after
reading, contact the user group for clarification prior to the submission of an application for free ATP licensing (next). To
order ATP materials from Dr. Ger, ATP licensing is necessary.