Path: utzoo!attcan!uunet!mcsun!isgate!krafla!frisk
From: frisk@rhi.hi.is (Fridrik Skulason)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: PS/2 serial Port differences
Message-ID: <1834@krafla.rhi.hi.is>
Date: 10 Jul 90 11:33:55 GMT
References: <1990Jul7.114947.4260@cc.ic.ac.uk>
Reply-To: frisk@rhi.hi.is (Fridrik Skulason)
Organization: University of Iceland (RHI)
Lines: 22

This is not a reply to the original posting, but I have noticed that the serial
port on PS/2 70 machines is different from any other serial port I have been
working with.

I have been interfacing switches to PCs, as a part of a project to assist
handicapped childern to communicate.  This includes digital (not analog)
joysticks, as well as sets of 1,2,5 or 8 switches.  I can use the parallel
port for the input of up to 8 bits, but thw serial port can only be used to
input 5 bits.  The problem is that with PS/2 70, using the serial port for
input in this way simply does not work and I have no idea why.  This is
no problem, as the machines are far to expensive to be used in the project,
but I still wonder why.

So - does anyone know what makes the PS/2 sertial port different from other
serial ports ?

-frisk

-- 
Fridrik Skulason      University of Iceland  |       
Technical Editor of the Virus Bulletin (UK)  |  Reserved for future expansion
E-Mail: frisk@rhi.hi.is    Fax: 354-1-28801  |