Hi Frank,

Am I correct in thinking that you want to execute a certain routine, based on an input value?

You can do that like this:

; Execute one of several processes, based on the number in ACC
Execute_Process:
RL A ; Multiply A by two to account for the length of the AJMP
ANL A,#0FEh
MOV DPTR,#JMP_TBL ; Load the DPTR with the address of the jump table
JMP @A+DPTR ; Jump to the indexed position of the table
JMP_TBL:
AJMP Process_Device1
AJMP Process_Device2
.....
AJMP Process_Device#n

You can expand this to 128 jump locations. That should be enough, I think ;o)

Best regards,
Rob.