t1

5单片机1实用系统

;T1---BINARY CODE => BCD CODE
;INPUT: M[10H]=0FEH(BINARY_254)
;OUTPUT:M[11H]=02H 
;       M[12H]=54H(BCD_254) 
;
       ORG 2000H   ; CODE AREA
       MaV A,10H
       MOV B,#64H
       DIV AB
       MOV 11H,A
       MOV A,#0AH
       XCH A,B
       DIV AB 
       SWAP A
       ADD A,B
       MOV 12H,A
;
       ORG 03H   ; INT0 SERVICE PROGRA
       MOV R0,#55H
       RETI
;
       ORG 13H   ; INT1 SERVICE PROGRA
       MOV R1,#66H
       RETI
;
       ORGD 10H ; INTERNAL DATA AREA
       DB 0FEH
       DS 02H
;
       ORGX 20H ; EXTERNAL DATA AREA
DATAX: DB 11H,22H,33H
       DS 20H
       DB 44H
       End