[vcf-midatlantic] Robots and Relays and Commodore

Chris Fala chrisjpf33 at gmail.com
Wed May 25 15:01:10 EDT 2016


I knew that... ;-)

On Wed, May 25, 2016 at 2:54 PM, Dave McGuire via vcf-midatlantic <
vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:

> On 05/25/2016 01:47 PM, Chris Fala via vcf-midatlantic wrote:
> >>> Would this help?
> >>>
> >>> http://www.ebay.com/itm/152084733487
> >>
> >> ​almost,
> >> that one has 6 outputs
> >> you need one with 10 outputs​
> >
> > Thought the C64 user port only had an 8-bit port. Where are the other two
> > connected? The VIC has a few of the joystick port connected to the user
> > port, but not sure what other outputs you can get out of the C64.
>
>   There's a zillion different ways to demultiplex parallel I/O lines.  A
> degenerate case (but a valid one) is an I2C I/O expander, some of which
> can give you 32 I/O lines from just two.
>
>             -Dave
>
> --
> Dave McGuire, AK4HZ
> New Kensington, PA
>



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