Re: Lego interface card for the A2 ?

["Laine Houghton" <laine@intergate.com>]

"Bryan aka R.I.P." <bryan@gamezero.com> wrote in message 
7irm21hldcpoi7f8lm6araufeank83obou@4ax.com">news:7irm21hldcpoi7f8lm6araufeank83obou@4ax.com...
> Well... I don't know what it is, but a little Googling turned up these two 
> threads:
>

> It looks like it was found once in a //e in SLOT 4 and a GS in SLOT 3
>
> Here is the relevant quote from one of the threads:
>
> from: Mike Westerfield    Aug 19 1999, 12:00 am
> "It's an interface to the Lego robotics box, allowing the computer to 
> control
> Lego projects built with specialized parts. They are really quite cool, 
> but
> the card is worthless without the software, the box that sits at the other
> end of the card, and the specialized Logo parts it is designed to control.
> If you don't have those, pull it out and put it with your other spare 
> parts."
>
> L8tr,
>
> Bryan

The 6522 VIA has 2  8bit bidirectional ports and counters.

It should be fairly easy to trace the foil and determine what addresses 
C0XX,Slot are needed to set the chip and move the data.

He's half way to all kinds of fun you can have with 16 bits of interface.

The 6522 was the I/O of the commodore 64 so there are plenty of schematics 
and I'm sure programming examples.