as/cmd/ADDA/adda1_s0.casl

   1 MAIN    START
   2         LD      GR1,A
   3         LD      GR2,B
   4         ADDA    GR1,GR2
   5         RET
   6 A       DC      10
   7 B       DC      #FFEC           ; -20
   8         END