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'IP'
1998\11\13@024957 by Alessandro Zummo

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I would like to knwo if anyone has already implemented
the suite (or part of it) of the TCP/IP internet
protocols  on a pic and would like
to share the project wit the piclisters community....

--

  - *Alex* -

 http://freepage.logicom.it/azummo/

1998\11\13@050540 by Andy Stephenson

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At 23:24 12/11/98 +0200, you wrote:
> I would like to knwo if anyone has already implemented
> the suite (or part of it) of the TCP/IP internet
> protocols  on a pic and would like
> to share the project wit the piclisters community....

       count me in - I'd be very interested.

       The smallest stack I have come across is circa 20K bytes (I think).

>
>--
>
>   - *Alex* -
>
>  http://freepage.logicom.it/azummo/
>

1998\11\13@051846 by le MS

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Hi to you
could you tell me how to unsubcribe to PICLIST

thank you very much
Pascale

{Quote hidden}

1998\11\13@052928 by Peter L. Peres

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On Thu, 12 Nov 1998, Alessandro Zummo wrote:

>  I would like to knwo if anyone has already implemented
>  the suite (or part of it) of the TCP/IP internet
>  protocols  on a pic and would like
>  to share the project wit the piclisters community....

I haven't but I'd like to know what can be squeezed in. My bet is, ICMP
only over UDP using a PPP type interface over serial link. Even so it will
be hard to leave room for an ant or two in the smaller PICs (without
external RAM/ROM).

Peter

1998\11\13@113945 by Alessandro Zummo

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Il 13-Nov-98, Peter L. Peres scrisse:

>>  I would like to knwo if anyone has already implemented
>>  the suite (or part of it) of the TCP/IP internet
>>  protocols  on a pic and would like
>>  to share the project wit the piclisters community....

> I haven't but I'd like to know what can be squeezed in. My bet is, ICMP
> only over UDP using a PPP type interface over serial link. Even so it will
> be hard to leave room for an ant or two in the smaller PICs (without
> external RAM/ROM).

I think that PPP can be done, but i don't if
it's worth to do it... my bet is UDP, ICMP, IP over
a SLIP link on a pic 16F84
running at 19200 bps... i'm sure it can be done..
TCP is far too complect to be implemented
on an 8 bit architecture with small memory
storage like a pic... it would be REALLY fine
to use some kind of bus instead of a point to point
interface like SLIP... it isn't easy
but it could be done... my problem
is that i've no time at all...

on a bus interface one could get in trouble
when some kind of broadcast messages are
posted on... or if a message is on the bus
while the pic is doing some other things...

also CSMA/CD is a big issue... with bit banging
it can be done easily.. i was also thinking about
adding an external ram/eeprom to store
incoming messages until they're parsed...
then the receive routine will be interrupt driven...
but a very full bus will not allow the pic to read the
stored messages without lossing some packets
..then you need a way to syncronize with the bus
.. in fact, it's not easy....



--

  - *Alex* -

 http://freepage.logicom.it/azummo/

1998\11\19@130330 by le MS

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Hi to you
could you tell me how to unsubcribe to PICLIST

thank you very much
Pascale

{Quote hidden}

1998\11\19@131201 by Andy Stephenson

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At 23:24 12/11/98 +0200, you wrote:
> I would like to knwo if anyone has already implemented
> the suite (or part of it) of the TCP/IP internet
> protocols  on a pic and would like
> to share the project wit the piclisters community....

       count me in - I'd be very interested.

       The smallest stack I have come across is circa 20K bytes (I think).

>
>--
>
>   - *Alex* -
>
>  http://freepage.logicom.it/azummo/
>

1998\11\19@131206 by Peter L. Peres

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On Thu, 12 Nov 1998, Alessandro Zummo wrote:

>  I would like to knwo if anyone has already implemented
>  the suite (or part of it) of the TCP/IP internet
>  protocols  on a pic and would like
>  to share the project wit the piclisters community....

I haven't but I'd like to know what can be squeezed in. My bet is, ICMP
only over UDP using a PPP type interface over serial link. Even so it will
be hard to leave room for an ant or two in the smaller PICs (without
external RAM/ROM).

Peter

1998\11\20@015046 by Nigel Goodwin

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In message <D3BEE1BAB61FD211957F00A0C99E66D30C7A52@NS-ASG-NT1>,
Castiaux, Pascale MS <EraseMEPascale.Castiauxspam_OUTspamTakeThisOuTASGDPW.CHIEVRES.ARMY.MIL> writes
>Hi to you
>could you tell me how to unsubcribe to PICLIST
>
>thank you very much

This gets asked so often I've put the details on my website, under
PICLIST.
--

Nigel.

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