;
;         "mac_fb.txt" ;    ()
;
;
;----------------------------------------------
;
  SEL_RB macro num ;;    
   if num = 0
    clr RS0
    clr RS1
   elseif num = 1
    setb RS0
    clr RS1
   elseif num = 2
    clr RS0
    setb RS1
   elseif num = 3
    setb RS0
    setb RS1
  endif
 endm
;
;----------------------------------------------
;
 TEST_STOP macro
  sjmp $
 endm
;
;----------------------------------------------
;