[ax25-layer2] Layer Two Ideas?

[Jason Winningham]

On Sep 15, 2005, at 10:41 AM, Glenn Thomas wrote:

> I like this! Another more general question (frame format related) is, 
> do we want to require some form of data compression?

Well, shifting the bits around so that the ASCII values for the 
callsign characters are encoded in fewer bits could be considered a 
form of compression...

> Oh, a modern microprocessor used for this application may well be 
> something like the AIM chip - not too far from a Cray-1 in processing 
> power. Stuff like data compression and EDAC-in-firmware will not tax 
> its processing resources.

There are pretty potent microprocessors out there, but I think that any 
new version of the protocol should be able to pass a test like "will it 
run on a PIC16F84 / MC68HC908 / other similarly sized device?"

IMO, general payload compression should be left to a higher layer, and 
layer 2 should be simple enough to implement so that it can be 
implemented on reasonably sized microcontrollers.

-Jason
kg4wsv