Build B of the And-Or Network Module
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                                            Current Rev.  14-JUN-1999

By early winter of 1999 it became clear that additional AONM's were
going to be needed.  At the Saclay Trigger Workshop the decision was
taken to build more of them and a public announcement was made of this.

Steve investigated the FPGA market and the decision was taken that the
Build B AONM's would use the Xilinx  XC4036XLA-09HQ240C  FPGA in the
Main Array and Board Support locations and the Xilinx  XC4013XL-3PQ240C
in the VME Interface location.

A big question was how many to build.  There are many ways to look at
this question: how many are wanted with the faster Main Array FPGA's,
how many new addition ones are needed to support the Run II L1 Cal Trig.

   Know Uses
     L1 FW
       6x  AONM
       3x  FOM
       1x  FOM++
     L2 FW
       4x  AONM
       4x  FOM
     Test Stand
       6x  AONM
       4x  FOM
       1x  FOM++

   For Run II L1 Cal Trig
     10x  Bougie
      5x  CTRO
      ?x  Cal Trig Quadrants ?


   Rational concern to make enough Build B so that ALL instances of a
   given application would be on the same type of Xilinx part.



Decided to use "turn key" process at ADCO.

Decided to install all the parts except for the HP Fiber Optic Receivers
for the Command Link.  This saved about $50 per card.  All other command
link components were installed.

Decide NOT to modify the raw pcb at all.  Pin out of the new type of
Xilinx part vs the current pcb layout was investigated and the
decision taken to make no change.  "updating" the silkscreen to the
new version of THE-Card silkscreen was investigated and decision taken
to make no change.