Re: PIC Expander

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Re: PIC Expander

>         The light bulb turned on and an idea struck me (ouch!). The
> TI-graphlink uses a pic controller to turn computer signals to TI link
> signals. It wouldn't be to hard (correct me if I'm wrong) to get the
> commands out of the pic controller. Then alter them to your liking and
> put them into another pic controller (if you had the right, expensive
> equipment). Using these comands one could make a Mem Expander that would
> use link protocal and be able to send backups back and forth (someone has
> already thought of this and is working on such an expander (aprox. 40-50
> for the 512k unit)). Using such a controller any type of unit could be
> attached to the TI with little (if any) driver software.

Why not use the graphlink itself? The computer end is certainly not a mystery,
it sends normal rs232 info. It's pretty universal.

BTW, does anyone know if TI's calc-to-calc protocol supports full-duplex
operation?
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