From: Martin Joseph (martyNT_at_barknaturalpet.com)
Date: Mon Sep 13 2004 - 00:51:11 PDT
On Sep 12, 2004, at 6:29 PM, Mike Detlefsen wrote:
> Well, it works most of the time. Sometimes you can have problems due to
> the fact that the Macs did not have RS-232 ports at all, but had RS-422
> ports, which were designed to operate at different voltages and
> different number of signal wires than RS-232 does. That's how they
> could get 230,000 bps out of it.
>
> I have, once or twice over the years, run into problems because of
> this.
>
RS 422 using different number of signal wires? Not quite. It's a
serial standard, and it's backwards compatible with RS-232. It did
allow for longer line lengths, more devices and greater speeds though.
Personally I have never seen an RS 422 implementation that had any
issues doing RS 232.
Here a web page I googled with some interesting info too.
http://wi-fiplanet.webopedia.com/TERM/R/RS_232C.html
Marty
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