EMC and second Parallel port/BOSS control

I was on:
http://www.linuxcnc.org/handbook/index.html
Seeing more "input" on my Series I conversion. Noted that it
mentioned that EMC supports a second parallel port for:

"Now you may not know this, but the bridgeportio system uses the
auxiliary I/O port for some of its functions. Stuff like mist or flood
coolant, spindle speed and direction, and estop
state."

Is there a site that gives the pinouts for the second port for these
features?

I know Tim G's site has them for the first port, but I don't recall
seeing them for the second port....

Thanks
Marty