Subject: Re: Serial port pinouts
To: None <port-sparc@NetBSD.ORG,>
From: Brad Walker <>
List: port-sparc
Date: 12/23/1996 17:40:05
> From Mon Dec 23 17:28:49 1996
> I just acquired a Sun 4/260 and I'm wondering how to connect ttya to
> a PC (I tested this machine with a borrowed monochrome monitor). The
> Sun Hardware FAQ doesn't specify whether the TxD and RxD pins are input
> or output (DTE or DCE).
> Thanks,
> Charles Lepple

The TxD and RxD pins are just as prescribed. One pin is for receiving
data and one pin is for transmitting data. Whether you cross the
pins or use them straight thru is a cabling issue.

For most PCs, all you need is 2 and 3 crossed with 7 straight thru.
I believe this is called DTE wiring.

-brad w.