i think not so eassy, (250kb11bit/specialstart-stop timing)....

give as some links if this is so easy....

I'm verry interested...

... googling you can find only asm stuf, with wery reserved explanation..
i think transmit is posible with asm-software sending routine combined with basic logic....

but for reciving, if someone know technics for capture (firstline bracket)
this shud be interesting post...