Re: A86: Radio Link- Revisted and Problem Explained
[Prev][Next][Index][Thread]
Re: A86: Radio Link- Revisted and Problem Explained
Hehe, tell SCaBBy to make an 8 player version of Bomber Bloke! :)
----- Original Message -----
From: Joshua J Seagoe <rabidcow@juno.com>
To: <assembly-86@lists.ticalc.org>
Sent: Friday, January 22, 1999 11:32 PM
Subject: Re: A86: Radio Link- Revisted and Problem Explained
>
>i was gonna have a microcontroller interpret the bits and send them.
>part of the reason this would be required was because i wanted to have
>more than 2 calcs on the link, so it'd need something to tell it which
>calc was to get the message. the microcontroller would talk to the calc
>so there wouldn't be problems with intermittent signal.
>
>ok, maybe a little complicated, but i've been known to be crazy at times
>and i think it could be done. it wouldn't be just a radio link, it'd be
>a radio NETWORK! think of it, 4 and 8 player games!
>
>-josh
>
>
>> Now what all of this has to do with radio links is this: the
>>signal has to
>>be continuous or the calcs will generate transmissions errors from
>>timeouts on
>>the port. If the signal is digitized through a modem, the
>>lowering-raising
>>patterns will skip points and accidentally lower the wires when they
>>need
>>constant voltage. This is why we can't digitize the calc links with
>>modems.
>>My calc radio link works perfectly fine for a range of about a 100
>>feet. It
>>gets very little problems during calculator TI-OS transfers because
>>the
>>raising-lowering patterns have great tolerance for interferences.
>>I'm
>>assuming ztetris has a linking routine similar to the TI-OS because it
>>causes
>>few problems. I have found that very few linking routines for the
>>TI-86, TI85
>>and TI92 use continuous bitstream (where the recieving unit must keep
>>up with
>>the transmitting unit or perish the connection) flow, but rather the
>>raising
>>and lowering routines.
>> If somebody manages to comeup with a modem radio link that
>>supports
>>continuous transmission like most analog communications, that would be
>>great,
>>but I'm sticking with my 2 frequency version because it is simple and
>>concise.
>>In response to earlier questions, I don't know the exact part # of
>>the
>>transcievers, I got the kind that have four prongs. One prong was
>>input, one
>>was output, and two were the negative and positive power leads.
>
>___________________________________________________________________
>You don't need to buy Internet access to use free Internet e-mail.
>Get completely free e-mail from Juno at http://www.juno.com/getjuno.html
>or call Juno at (800) 654-JUNO [654-5866]
>
>