What exactly does "-x" mean on the SE/30 Schematic redraw ?

[smrieck511]

Sorry for this noobie question but what does this mean? It can't be ground, those pins are obviously marked and it can't be to nothing, those pins are left off the schematic so I'm lost on pins going to -x.

 

[David Cook]

Can you post a picture of that area of the schematic?

 

[Phipli]

It means not connected to anything.

 

[smrieck511]

Here's a good example. What would then be the difference between Pin 7 (-x) and Pin 10 (for example) which is not shown at all ?

Edit: I think I get it..the -x are an actual listed part of the circuit (identified in blue lettering. Pin 7 in this case is IE0) though they are simply soldered to their respective pad (to nothing) on that end?

 

[finkmac]

the pad exists, but it doesn't connect to anything.

 

[Phipli]

Here's a good example. What would then be the difference between Pin 7 (-x) and Pin 10 (for example) which is not shown at all ?

Edit: I think I get it..the -x are an actual listed part of the circuit (identified in blue lettering . Pin 7 in this case is IE0) though they are simply soldered to the pad on that end?

10 is missing because the person that originally drew the symbol didn't include it, the x on 7 to say unused is there because the person USING the symbol didn't need it.

Edit :
10 and 35 are power, seems they're not shown in this symbol.

 

[cheesestraws]

Yes; it's marked with an X so you know that it's deliberate, not just that the person who drew the schematic forgot to finish that bit.

 

[smrieck511]

Ok I understand now. Thanks.