A89: RE: Radio link protocol : Use the one that's already THE standard i

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A89: RE: Radio link protocol : Use the one that's already THE standard in computers.


What are ham radios ??
Javier

-----Mensaje original-----
De: Rob Rupertus <rob_rupertus@yahoo.com>
Para: assembly-89@lists.ticalc.org <assembly-89@lists.ticalc.org>
Fecha: Martes 21 de Septiembre de 1999 22:23 p.m.
Asunto: A89: Radio link protocol : Use the one that's already THE standard
in computers.


>
>A radio link protocol was developed long before most of the TI-8x
calculators existed and can be
>easily adapted for TIs.
>
>It is called packet radio, and is used to connect two computers (even
different kinds) via ham
>radios.  All calculators would be tuned to the same frequency.  Each
calculator would be assigned
>a different call sign or a numerical address.  When a transmission occurs,
the calculator would
>send its call sign, and ALL for a message to all other calculators, or the
intended receiver's
>call sign (for operation like a regular link), and the message.
>
>Since packet radio has already been proven to work and is already a
standard in radio data
>transmission, it would end the never ending discussion about how radio
links should transfer data,
>and it would allow actual work to be started.
>
>----
>
>With TIs, this could be further enhanced with the following :
>
>Free the user from having to find out a unique call sign...If it is a
calculator with its serial
>number in ROM (like the TI-89), the serial number could be used.  To
prevent confusion if, say, a
>TI-92 and a TI-89 have the same serial number, the calculator model number
(i.e. 89 for TI-89)
>would also be included.
>
>If DOOM receives a chat message, it might become confused.  So, in any
message being sent out,
>include the application name.
>
>If there are two different games of DOOM running, they would get confused
by each other.  So, in
>addition to the application name, include a channel number or name (one for
each different DOOM
>game or chat conversation).
>
>There could be application and channel names, such as DOOM,OPEN, where
information, such as DOOM
>games that are accepting new players, can be broadcast.
>
>----
>
>Some nice benefits :
>
>Since it would be a standard protocol, it would enable calculators to use
one set frequency
>without programs having to do much work to figure out whether a message is
for them and whether
>the data deals with that program.  For instance, if you are playing a DOOM
game, and your teammate
>shoots you because someone else was chatting and sent a message which DOOM
mistook for that
>teammate saying they fired a bullet.
>
>Programs could be written for and work between different models of
calculators, as long as they
>send the same format messages.  A simple instance is chat, which would be
easy to implement.
>Multiplayer tetris would be more difficult, but it would be nice to be able
to play something like
>this against your friend if you have a TI-85 and your friend has a TI-83.
Also, even nicer games,
>like DOOM could be written for different types of calculators.  A 3 or 4
player DOOM match would
>be great (8 would be awesome if it is possible).
>__________________________________________________
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>
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