>
>I'm afraid you'll have to invest in an USB-to-RS232 first (and then use
>a WBus approach to share that precious RS232 port with all your
>peripherals :) ), or better yet: USB-to-RS485. Or dive into the 16C675.
>Or get one of the yet-to-appear 18F's with USB. Or maybe IRDA? Or
>sublimal communication using the LCD screen? Or use the audio channel?

One other often overlooked option with serial, is to connect multiple 
devices in a ring topology. Easily done with stereo phone plugs and 
jacks.  You packetize the data, and each device simply passes along any 
data that isn't addressed to it.  If you see a packet you sent, then you 
know it didn't get seen and eaten by the recipient.


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