Re: Treating parallel port as serial device

H. Peter Anvin (hpa@zytor.com)
28 Aug 2001 14:55:04 -0700

Followup to: <9mgtpb$mf4$1@sisko.my.home>
By author: "Tony Hoyle" <tmh@nothing-on.tv>
In newsgroup: linux.dev.kernel
>
> I'm looking to attach a serial device to my box that has only TTL level
> I/O. Since I'm more of a software than a hardware person making a
> circuit board up with a max232 in is a bit risky... I want to connect
> the I/O to the parallel port.
>

Most RS232 boards accept TTL level input, so your only problem is
output. You may want to simply construct a level converter, such as a
voltage divider or zener diode on your input.

-hpa

-- 
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt	<amsp@zytor.com>
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