ITRON Newsletter No.25 (HTML Edition)

ITRON Technical Committee, TRON Association
Katsuta Building 5F, 3-39, Mita 1-chome, Minato-ku, Tokyo 108, JAPAN
TEL: (03) 3454-3191    FAX: (03) 3454-3224

About the ITRON Newsletter

The ITRON Technical Committee of the TRON Association issues the ITRON Newsletter bimonthly, providing information relating to the ITRON subproject and updates on Technical Committee work. Additions and corrections to the ITRON specifications, as well as corrections to other Technical Committee publications, are also notified through this newsletter. Other features include introductions to products developed in connection with ITRON specifications, and to publications and articles, along with announcements of events such as trade fairs and seminars.

The ITRON Newsletter appears in print form in TRONWARE (Japanese only) and in the TRON Project Journal (Japanese and English), as well as being published on the World Wide Web of the Internet. Anyone desiring to contribute an article to the newsletter is invited to contact the ITRON Technical Committee. Questions, comments or requests regarding the ITRON specifications or ITRON subproject should also be directed to the Technical Committee.

ITRON Open Seminar

Once again this year an ITRON Open Seminar will be held, this time on the theme, "Expanding Applications and the Challenge of New Standards." The seminar will be held Wednesday, July 16, at the Arcadia Ichigaya hall in Tokyo. Details of the program were not final as of this writing, but the seminar will include such contents as an interim report by the ITRON Hard Real-Time Support Study Group, application case studies of the µITRON-specification OS, a panel discussion, and a special speech by Ken Sakamura, TRON Project Leader. A more detailed description of the program will be given in ITRON Newsletter No.26. We hope to see a large turnout as usual.

ITRON-specification Product Registration Update

The products listed below were newly registered as ITRON-specification products since the last issue of this Newsletter and up until February 1, 1997. In addition, the REALOS/97 and REALOS/F32 products have been deregistered. Previously registered products are listed here.

A comparison of these newly registered products with the µITRON3.0 compatibility checksheets can be viewed on the ITRON Home Page.

Newly Registered Products (Oct. 1, 1996 - Feb. 1, 1997)
Specification Product Name Processor Company
µITRON3.0 REALOS/FR20 FR20 Series Fujitsu Limited
REALOS/SP SPARClite Series Fujitsu Limited
* Above list may include products not supported outside of Japan.
* Product names are valid only in Japan.

ITRON-related Publications

Listed below are the publications prepared and issued by the ITRON Technical Committee as of February 1, 1997. The ITRON-µITRON Standard Handbook is a one-volume compilation of µITRON (Ver 2.0) and ITRON2 specifications. Each of the publications below can be obtained directly from the sources indicated.

The latest version of µITRON3.0 is Ver 3.02.00. Changes made since the µITRON3.0 Standard Handbook was released (Ver 3.00.00) are noted in Newsletter No.5 and No.11, as well as in ITRON Standard Guidebook 2.

The ITRON Standard Guidebook 2 deals primarily with µITRON3.0. The earlier ITRON Standard Guidebook '92-'93 remains as a valuable reference for use with the µITRON (Ver 2.0) and ITRON2 specifications, even though the dates in its title are now past.

ITRON-related Publications
Name Type Price Publisher Issued ISBN No.
ITRON-µITRON Standard Handbook Specification (Jap.) 4,800Yen Personal Media Co. 1990 ISBN4-89362-079-7
µITRON3.0 Standard Handbook Specification (Jap.) 4,000Yen Personal Media Co. 1993 ISBN4-89362-106-8
ITRON/FILE Standard Handbook Specification (Jap.) 3,000Yen Personal Media Co. 1992 ISBN4-89362-092-4
ITRON Standard Guidebook '92-'93 Textbook (Jap.) 3,500Yen Personal Media Co. 1992 ISBN4-89362-197-6
ITRON Standard Guidebook 2 Textbook (Jap.) 3,500Yen Personal Media Co. 1994 ISBN4-89362-133-5
µITRON Specification Ver Specification (Eng.) 12,000Yen TRON Association 1989 -
ITRON2 Specification Ver Specification (Eng.) 15,000Yen TRON Association 1990 -
µITRON3.0 Specification Ver 3.02.00 Specification (Eng.) - TRON Association 1994 -
* Prices do not include consumption tax.
* The documents are available to TRON Association members at a special discount rate.
* English-language specifications are distributed free of charge from here.

Newly registered products

Here we give a brief introduction to the two systems newly registered with the TRON Association as ITRON-specification products.

REALOS/FR20 µITRON-specification real-time OS for the FR20 Series
Fujitsu Limited

Product overview

REALOS/FR20 is a real-time OS implementing the µITRON3.0 specification for Fujitsu's original 32-bit microcontroller series, the FR20.


Product specifications

Target CPU FR20 Series (MB91100 Series)
Maximum number of tasks 32,767
Maximum priority levels 32
Scheduling Priority-based, event-driven
System calls 50
Implemented specification µITRON3.02
Kernel language Assembly
Application languages C, Assembly
Kernel size approx. 2.7 KB (resident) to 7.2 KB (max. configuration)

REALOS/SP µITRON-specification real-time OS for the SPARClite Series
Fujitsu Limited

Product overview

REALOS/SP is a real-time OS implementing the µITRON3.0 specification for Fujitsu's SPARClite Series, an original 32-bit RISC processor based on the SPARC architecture and intended for embedded system use.


Product specifications

Target CPU SPARClite Series (MB86930/MB86830 Series)
Maximum number of tasks 65,535
Maximum priority levels 32
Scheduling Priority-based, event-driven
System calls 50
Implemented specification µITRON3.02
Kernel language Assembly
Application languages C, Assembly
Kernel size approx. 5 KB (resident) to 10 KB (max. configuration)

Other ITRON-related products

Here we look briefly at some ITRON-related development tools and middleware made available recently. Anyone wishing to have a product introduced in future issues is encouraged to contact the ITRON Technical Committee.

Software modules supporting ITRON
ACCESS Co., Ltd.


NetFrontTM is a set of original software modules offered by ACCESS for putting Internet capabilities into consumer electronic products or dedicated hardware. The package includes a Web browser, PPP or LAN driver, TCP/IP, and Internet mail software (supporting SMTP, POP, and MIME).



AVE-TCP is an originally developed TCP/IP protocol stack.


IrDA driver

IrDA driver modules of various types are available for infrared applications.

For more information, contact:

ACCESS Co., Ltd., Project Promotion Office
TEL: (03) 3233-0200
FAX: (03) 3233-0222

Recent works on ITRON

Interface magazine (CQ Publishing) for March 1997 has a feature article on "Developing a reference platform for Internet TV." The authors introduce a reference board with an SH-2 processor, and in their product introduction section they give an example of an Internet TV platform designed using NetFront on an ITRON-specification OS.

! This newsletter is a special edition for WWW of the one appeared in TRONWARE vol.44 and TRON PROJECT JOURNAL No.47.

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