well, if it's a simple card, perhaps I can borrow it and reconstruct another
one. Of course, I'd still need another 4070 :)
Jay
----- Original Message -----
From: "Tony Duell" <ard_at_p850ug1.demon.co.uk>
To: <cctalk_at_classiccmp.org>
Sent: Sunday, June 27, 2004 3:48 PM
Subject: Re: looking to trade for paper tape reader/punch
> [4070 serial card]
>
> > I have this card. It is a while ago since I last looked at it, but iirc
> > it didn't look too complex. If anyone wants to reconstruct this card,
>
> It's not that complex. There's the normal 40 pin UART and some TTL for
> things like baud rate generation, interfacing to the 4070, etc. One
> feature is a pair of '157 muxes which let you substitute a fixed cheacter
> if you get a parity error or similar. I've never actually used that
though.
>
> Half the PCB is covered with the jumper instructions etched into the
> copper. Very useful!
>
> -tony
>
Received on Sun Jun 27 2004 - 21:53:18 BST