DIPSWT_FUNC: MOV A, P2 ; get the DIP switch value ANL A, #0FH ; mask to the low 4 bits MOV B, #3 ; setup the table index * 3 MUL AB ; A = table index MOV DPTR, #TABLE JMP @A+DPTR ; jump to and through table ; TABLE: LJMP DIP_SWT_IGNOR ; swt=0 ignore this combination LJMP DIP_SWT_FUNC1 ; swt=1 go to func 1 handler LJMP DIP_SWT_IGNOR ; swt=2 ignore this combination LJMP DIP_SWT_IGNOR ; swt=3 ignore this combination LJMP DIP_SWT_IGNOR ; swt=4 ignore this combination LJMP DIP_SWT_IGNOR ; swt=5 ignore this combination LJMP DIP_SWT_FUNC6 ; swt=6 go to func 6 handler LJMP DIP_SWT_IGNOR ; swt=7 ignore this combination LJMP DIP_SWT_FUNC8 ; swt=8 go to func 8 handler LJMP DIP_SWT_IGNOR ; swt=9 ignore this combination LJMP DIP_SWT_FUNC10 ; swt=10 go to func 10 handler LJMP DIP_SWT_IGNOR ; swt=11 ignore this combination LJMP DIP_SWT_FUNC12 ; swt=12 go to func 12 handler LJMP DIP_SWT_IGNOR ; swt=13 ignore this combination LJMP DIP_SWT_FUNC14 ; swt=14 go to func 14 handler LJMP 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 ;