What function does the Parallax P8X32A-D40 Propeller serve in the Replica I Plus (and in the L-Star Plus)? The schematics don't make that clear. (At least not to me.) I want to be able to control an external LED and other simple external devices. I can't find any info on using the external expansion connector on either of these Apple I (more or less) replicas other than what the pinouts on the connectors are. As you can tell, I'm totally inexperienced at using the expansion connectors and a novice at using 6502 assembly language.
THANKS for any help you can provide.