SIO2PC negative/ground

[netbeui]

I'm about to attempt to build a SIO2PC cable and I've decided to go with the schematic that I've attached to this message. It's been a while since I've read these things and for the life of me I can't remember how to deal with the negative/ground in the diagram. If you look at the bottom right corner you'll see that two lines end with the ground symbol.

 

Can I simply connect those back to P6(GND) on the SIO connector? Or am I supposed to do something else with them?

[netbeui]

File attached

[sloopy]

yes

 

 

sloopy.

[netbeui]

Thx!