[simpits-tech] Looking for MM5451 Information

[Gene Buckle]

On Fri, 19 Sep 2003 francisco at picornell.net wrote:

> Last year (I think) there were posts on the MM5451 chip and a program Robert
> Farve wrote to show status lights for Falcon 4. I am trying to build that
> circuit using two chips. From an old diagram I see the ipnout to chip one
> being from parrallel port pin 18 (I think)or is it 2 and 3. Does anyone
> know what pin (parrallel port) provides the inputs to the second chip?
>
If you're using two chips, you cascade them.  The MM5451 has an output
line that would go to the input line of the next MM5451.  If you download
http://www.simpits.org/fileproc/files/mm5451.pdf, you'll see how it's
done.

g.