Just finishing up the first car of a four car mod. Going from Miprom 21 to MCE iControl (iBox). Motion says they need board level prints of the Miprom 21's to design us a hall call cross cancellation system. (So that the turned over iBox car doesn't chase the same hall call assigned to the remaining Miprom cars and vice-versa.) The prints on the job don't even show the hall call circuit let alone the CPU dispatching algorithm, my bosses told me they called Moline but got no help.

Two questions:

1. Has anyone gone through this before?

2. Any ideas for a home made (field designed) solution?

The Montgomery drawing number is WD-17635, job numbers 82544 through 82547 for the four cars, done in 1995, digital DC gearless, 28 stops.

The new iControl has an iCentral group controller with serial link hall calls.

I realize this is a tall order from an Internet forum, but thought it couldn't hurt to ask.
Thanks