add.asm

自己做的程序

DATAREA   SEGMENT
  X      DB    38H
  Y      DB    21H
  RS     DB    0
DATAREA   ENDS
CODE     SEGMENT 
ASSUME   CS:CODE,DS:DATAREA
START:MOV AX,DATAREA
MOV DS,AX
MOV AL,X
ADD AL,Y
MOV RS,AL

MOV AL,X
MOV CL,4
SHR AL,CL
ADD AL,30H
MOV DL,AL
CMP DL,39H
JLE P1
ADD DL,07H
P1:   MOV  AH,02H
INT 21H
MOV DL,X
AND DL,0FH
ADD DL,30H
CMP DL,39H
JLE P2
ADD DL,07H
P2:   INT 21H

MOV DL,'+'
INT 21H

MOV AL,Y
MOV CL,4
SHR AL,CL
ADD AL,30H
MOV DL,AL
CMP DL,39H
JLE P3
ADD DL,07H
P3:   MOV  AH,02H
INT 21H
MOV DL,Y
AND DL,0FH
ADD DL,30H
CMP DL,39H
JLE P4
ADD DL,07H
P4:   INT 21H

 

MOV DL,'='
INT 21H

MOV AL,RS
MOV CL,4
SHR AL,CL
ADD AL,30H
MOV DL,AL
CMP DL,39H
JLE P5
ADD DL,07H
P5:   MOV  AH,02H
INT 21H
MOV DL,RS
AND DL,0FH
ADD DL,30H
CMP DL,39H
JLE P6
ADD DL,07H
P6:   INT 21H

 

MOV AH,4CH
INT 21H
code   ends
       end   START