Bulletins from the Pacific Packet Radio Society - page 136
well over 200 members. The bi-monthly newsletter, Packet Status Register, is looking good, and will be used as a primary mechanism for updating amateur packet operators with in-depth information on TNC hardware, linking experiments and the latest software releases, as well as continuing newsy articles and an occasional tutorial. For further information, please contact us
at P.O. Box 22888, Tucson, AZ.85734.73, Den and the TAPR group
FILE QST.82.11.13.0.KD2S
To: all groups
From: KD2S
Re: what's in a nameI've received some comments on the naming of the new protocol to go out on the TAPR beta test boards. To clarify, the target protocol includes the physical control of all devices on board, the AMICON-compatible link-level routines (see Nov 82 QEX) and enough networking to test the routines mentioned. Included is a powerful monitor, a mechanism to modify and debug EPROM code (think about that for a minute) on board, and for coordinators or others interested, a set of EPROM burning routines. In light of the explanation above, I'm recommending to the rest of the group the following definition:
"The TAPR/AMSAT protocol is the implementation of the AMSAT Phase IIIB AMICON link-level protocol on the TAPR terminal node controller.".
As mentioned in the QEX article, this protocol may be suitably universal for both local area networking and long-haul linking. Also, note that the FORTH software team here is not dead, but have been very busy doing things more important to them than amateur radio. There should be a release of the TAPR/DA protocol (dynamic addressing) in the near future. The group is working on changing all of the simulation code into PROM'able code, and documentation will follow implementation as it now stands. People interested in FORTH on the TNC should contact me, and I'll discuss their needs, comments etc. with Marc Chamberlin WA7PXW.
FILE QST.82.11.16.0.KA6M
.......... AMICON LINK LEVEL PROTOCOL NOTES
The protocol which forms the basis for the AMICON Link Level design is a subset of ADCCP-HDLC Level 2 protocol. In this protocol the standard unit of information is the frame:
----------------------------------------------------------------------------------------------------------
] SYNC ] SYNC ] FLAG ] DC ] SC ] RC ] CNTL ] PID ] TEXT ] FCS1 ] FCS2 ] FLAG ]
----------------------------------------------------------------------------------------------------------Click for Original Graphic Image of this page.
