[simpits-tech] Looking for MM5451 Information

[francisco at picornell.net]

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?