Run II
                                  ------
  Card Addresses   D0 SCL Hub-End and Level 1 Trigger Framework Readout
                   and the TCC Communications Crate
 ----------------------------------------------------------------------

                                                           Rev. 24-MAR-2003

                       ****************************
                       *                          *
                       *     RACK NUMBER M124     *
                       *     ----------------     *
                       ****************************


This rack has two 9U VIPA crates and a standard 6U VME crate.


TOP CRATE - 9U VIPA Crate for Serial Command Link Hub-End
-----------------------------------------------------------------------------

 SLOT#

   1. TOM with Vertical Interconnect Slave for  Master #2 / Slave #0 

   2. open
   3. open
   4. open

   5. SLF & TSC     Geographic Section   #7:0
   6. SLF & TSC     Geographic Section  #15:8
   7. SLF & TSC     Geographic Section  #23:16
   8. SLF & TSC     Geographic Section  #31:24
   9. SLF & TSC     Geographic Section  #39:32
  10. SLF & TSC     Geographic Section  #47:40
  11. SLF & TSC     Geographic Section  #55:48
  12. SLF & TSC     Geographic Section  #63:56

  13. THC           Trigger Hub Controller 

  14. SLF & TSC     Geographic Section  #71:64
  15. SLF & TSC     Geographic Section  #79:72
  16. SLF & TSC     Geographic Section  #87:80
  17. SLF & TSC     Geographic Section  #95:88
  18. SLF & TSC     Geographic Section #103:96
  19. SLF & TSC     Geographic Section #111:104
  20. SLF & TSC     Geographic Section #119:112
  21. SLF & TSC     Geographic Section #127:120





Middle CRATE - 9U VIPA Crate for L1 Framework Readout
-----------------------------------------------------------------------------

 SLOT#

   1. TOM with Vertical Interconnect Slave for  Master #2 / Slave #1

   2. open
   3. open

   4. SBC   for L1FW Readout

   5. open
   6. open
   7. open
   8. open  -  note this slot does not work with a VRB

   9. VRB#2 Readout for AONM Physics And-Or Fired
  10. VRB#3 Readout for AONM Exposure Group and TRM Global Disable
  11. VRB#4 Readout for TRM L1 Busy and FOM L1 Busy
  12. VRB#5 Readout for TDM For Specific Trigger #127:64
  13. VRB#6 Readout for TDM For Specific Trigger  #63:0

  14. VRBC  VRB Controller

  15. open  with window to see the SCL Receiver

  16. VRB#7 Readout for FOM L1 Accept and FOM++
  17. VRB#8 Readout for TRM Inidividual Disable
  18. VRB#9 Readout for SM Tick and Turn and SM L1 Accept Number & L1AL2
  19. VRB#1 Readout for TRM For And-Or Input Terms (cf. slot #8 above)

  20. \  De-Mux card that brings the L2_Answers from L2_Global to the TFW
  21. /  It only gets power from this crate.  There is no connection to
         the VME Bus in this crate.





BOTTOM CRATE - 6U Standard VME Crate - TCC Communications Crate
-----------------------------------------------------------------------------

 SLOT#

   1. 
  21. 
       for details see:  www.pa.msu.edu/hep/d0/ftp/tcc/vme_access/
                                                 vme_communication_crate.txt



--------------------------------------------------------------------------
cf. graphical version of this information at
www.pa.msu.edu/hep/d0/ftp/l1/framework/drawings/the_layout_racks_m124_crates.ps