Another table metode can be:
<pre>

DIPSWT_FUNC:
MOV A, P2 ; get the DIP switch value
ANL A, #0FH ; mask to the low 4 bits
rl a
PUSH A
MOV DPTR, #TABLE
MOVC @A+DPTR
MOV B,A
POP A
INC A
MOVC @A+DPTR
MOV DPH,B
MOV DPL,#0
JMP @A+DPTR ; jump to and through table
;
TABLE:
DW DIP_SWT_IGNOR ; swt=0 ignore this combination
DW DIP_SWT_FUNC1 ; swt=1 go to func 1 handler
DW DIP_SWT_IGNOR ; swt=2 ignore this combination
DW DIP_SWT_IGNOR ; swt=3 ignore this combination
DW DIP_SWT_IGNOR ; swt=4 ignore this combination
DW DIP_SWT_IGNOR ; swt=5 ignore this combination
DW DIP_SWT_FUNC6 ; swt=6 go to func 6 handler
DW DIP_SWT_IGNOR ; swt=7 ignore this combination
DW DIP_SWT_FUNC8 ; swt=8 go to func 8 handler
DW DIP_SWT_IGNOR ; swt=9 ignore this combination
DW DIP_SWT_FUNC10 ; swt=10 go to func 10 handler
DW DIP_SWT_IGNOR ; swt=11 ignore this combination
DW DIP_SWT_FUNC12 ; swt=12 go to func 12 handler
DW DIP_SWT_IGNOR ; swt=13 ignore this combination
DW DIP_SWT_FUNC14 ; swt=14 go to func 14 handler
DW DIP_SWT_IGNOR ; swt=15 ignore this combination
;
DIP_SWT_IGNOR:
RET ; exit from subroutine if ignore
;
DIP_SWT_FUNC1: ; Function 1 handler
...
...
RET
;
DIP_SWT_FUNC6: ; Function 6 handler
...
...
RET
;
DIP_SWT_FUNC8: ; Function 8 handler
...
...
RET
;
DIP_SWT_FUNC10: ; Function 10 handler
...
...
RET
;
DIP_SWT_FUNC12: ; Function 12 handler
...
...
RET
;
DIP_SWT_FUNC14: ; Function 14 handler
...
...
RET