1-FEB-1988 

                  FIRST LEVEL TRIGGER SYSTEM
                  --------------------------

                                              NUMBER
          CARD NAME                 MNEMONIC REQUIRED 
   -------------------------------- -------- --------

1.  Bus Buffer Board                   BBB     11

2.  Mother Board Driver                MBD     44

3.  AND-OR Card                        AOC     64

4.  Intermediate Latch Card            IML      4

5.  Final Specific Trigger Decision    FSTD     8

6.  DIGIMEM Card                       DIGIMEM 18

7.  Trigger Latch Module               TLM     10

8.  Communication Interface Card       COMINT   6

9.  Intermediate Latch Read Out Card   IMLRO    8

10. Double Buffered Scaler Card        DBSC    20

11. Single Buffered Scaler Card        SBSC     8

12. Master Timing Generator            MTG      4

13. Interface Patch Panel Card         IPC      4

14. Calorimeter Trigger Front End      CTFE   320

15. Cal. Counting & Registering Card   CHTCR   40

16. Cal. Trig. Adder Tree Type 2       CAT2   232
                                             -----
                                              801

17. Rack                                       11

18. Quad Power Supply                          16

19. MicroVAX II with DRV11J I/O interface
    VAXELN target node 
    FIRST LEVEL TRIGGER CONTROL COMPUTER