Date   : Mon, 19 Oct 1992 21:18:43 GMT
From   : wupost!waikato.ac.nz!comp.vuw.ac.nz!actrix!naos!ewen@g.ms.uky.edu (Ewen McNeill)
Subject: Re: 5v out serial port

jmolinari@hamp.hampshire.edu writes:

I was going to email this, but I thought it might save some other people
from asking the same question if I posted it...

>   Anybody had their serial port NOT put out the 5 volts it's supposed to?
> Anybody care to take a guess at how diffucult it would be to fix?

I'm not sure what you are asking here.  Most serial ports (RS232 style
anyway) that I've come across put out +/- 12V (or so) depending on the
logic state, not 5V.  They are not broken in doing this.

There are some machines (C=64s is one that comes to mind) which came
with serial ports that put out TTL voltages (0/+5), but they aren't that
common.

If you still think that there is a problem with your serial port you may
care to mention what machine you are talking about, and any other
details about the problem (eg, when it stopped working).

--
Ewen McNeill, ewen@naos.actrix.gen.nz (or ewen@actrix.gen.nz)