ZX81 I/O ports

From: Stan Barr <stanb_at_dial.pipex.com>
Date: Sat Mar 23 03:25:52 2002

Hi,

"Glen Goodwin" <acme_ent_at_bellsouth.net> said:
> > From: Tony Duell <ard_at_p850ug1.demon.co.uk>
> > You mena it's beyond the ingenuity of these people who connect up
> > scanners/cameras/LCD panels/... to the ZX81 to add a serial port?
>
> No, no, I meant a ZX81 doesn't have one built in. Of course we use the
> Z80A-SIO (and -PIO). Modems were also commercially produced in the
> mid-eighties which allowed a simple mod so they could also be used as
> serial ports.

Hmm...I did my ZX81 serial port in software! It was only used to
transfer data to the host computer, so it was pretty simple...
-- 
Cheers,
Stan Barr  stanb_at_dial.pipex.com
The future was never like this!
Received on Sat Mar 23 2002 - 03:25:52 GMT

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