9.4.2 256种分支的散转程序.txt

MCS－51单片机应用开发实用子程序.zip

JMP256:
MOV	A,R3						
MOV	DPTR，#TBL				
CLR		C
RLC		A					
JNC		LOW128					
INC		DPH						
LOW128:
MOV	SAVE,A
MOVC	A,@A+DPTR
PUSH	ACC						
MOV	A,SAVE
INC		A
MOVC	A,@A+DPTR
PUSH	ACC
RET