> But if you're powering the PIC from the handshake lines, anyway, how does
> connecting the transistor buffer to them versus the PIC VCC any different?
> There's no quiescent drain when you use a PNP transistor.
>
> Personally I've never been much of a fan of scavenged power, since I have
> owned several laptops each with at least quirk per port.


I am powering the RS232 circuit from a serial line from the other device,
not the MPU. So the other device is getting it's own signal back, the MPU is
just switching it, not being powered from it.

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