Re: Lego interface card for the A2 ?

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

<heuser.marcus@freenet.de> wrote in message 
news:1110233090.315724.197520@z14g2000cwz.googlegroups.com...
>> The 6522 was the I/O of the commodore 64 so there are plenty of
> schematics
> and I'm sure programming examples.
>
>
> The C64 had two 6526 ("CIAs" - Complex Interface Adapters).
>
> They were similar to the 6522, but there are some functional
> differences and they have different pinouts. Some timings are
> different, also.
>
> The 6522 were actually used in the C1540/1541-Floppies, though.
>

Ahh, the danger of extrapolation. I had a coworker with a broken C-128. I 
narrowed it to the 6522 and all was well. That was about 10 or 11 years ago 
and I still remember  the shock of paying $25 for the chip.

Thanks for keeping me honest.

Laine...