汇编语言编写一个程序,实现十进制、十六进制和二进制之间的转换
推荐回答(2个)
CODE SEGMENT
ASSUME CS:CODE
STRR DB 18
STRRN DB ?
STRRS DB 18 DUP(?)
START: PUSH CS
POP DS
PUSH CS
POP ES
CALL INPUT
CALL LFCR
CALL LFCR
MOV BX,10
CALL DSPAXX
CALL LFCR
MOV BX,16
CALL DSPAXX
CALL LFCR
MOV BX,2
CALL DSPAXX
MOV AH,4CH
INT 21H
;================================
INPUT PROC NEAR
PUSH BX
PUSH CX
PUSH DX
PUSH SI
PUSH DI
PUSH BP
PUSHF
MOV AH,0AH
LEA DX,STRR
INT 21H
LEA SI,STRR
MOV CL,[SI+1]
XOR CH,CH
ADD SI,2
CMP BYTE PTR[SI],'B'
JE @B
CMP BYTE PTR[SI],'H'
JE @H
CMP CX,5
JBE @1
MOV CX,5
@1:
MOV AX,0
@2:
SHL AX,1
MOV BX,AX
SHL AX,1
SHL AX,1
ADD AX,BX
MOV BL,[SI]
AND BL,0FH
XOR BH,BH
ADD AX,BX
INC SI
LOOP @2
JMP @IEND
@B:
DEC CX
INC SI
CMP CX,16
JBE @B1
MOV CX,16
@B1:
MOV AX,0
@B2:
SHL AX,1
MOV BL,[SI]
AND BL,1
XOR BH,BH
ADD AX,BX
INC SI
LOOP @B2
JMP @IEND
@H:
DEC CX
INC SI
CMP CX,4
JBE @H1
MOV CX,4
@H1:
MOV AX,0
@H2:
SHL AX,1
SHL AX,1
SHL AX,1
SHL AX,1
MOV BL,[SI]
CMP BL,'9'
JBE @H3
SUB BL,7
@H3:
AND BL,0FH
XOR BH,BH
ADD AX,BX
INC SI
LOOP @H2
@IEND:
POPF
POP BP
POP DI
POP SI
POP DX
POP CX
POP BX
RET
INPUT ENDP
;================================
; 输出ax的值,输出的进位制在bx中设定,bx=2~16
DSPAXX PROC NEAR
PUSH AX
PUSH BX
PUSH CX
PUSH DX
PUSHF
XOR CX,CX
; MOV BX,16
@DSPAXX_1:
XOR DX,DX
DIV BX
INC CX
OR DX,30H
PUSH DX
CMP AX,0
JNE @DSPAXX_1
MOV AH,2
@DISPAXX_2:
POP DX
CMP DL,3AH
JB @DISPAXX_3
ADD DL,7
@DISPAXX_3:
INT 21H
LOOP @DISPAXX_2
MOV DL,32
INT 21H
POPF
POP DX
POP CX
POP BX
POP AX
RET
DSPAXX ENDP
;===============================
LFCR PROC NEAR
PUSH AX
PUSH DX
MOV AH,2
MOV DL,13
INT 21H
MOV DL,10
INT 21H
POP DX
POP AX
RET
LFCR ENDP
;=================================
DSPAX PROC NEAR
PUSH AX
PUSH BX
PUSH CX
PUSH DX
PUSHF
XOR CX,CX
MOV BX,10
@DSPAX1:
XOR DX,DX
DIV BX
INC CX
OR DX,30H
PUSH DX
CMP AX,0
JNE @DSPAX1
MOV AH,2
@DISPAX2:
POP DX
INT 21H
LOOP @DISPAX2
MOV DL,32
INT 21H
POPF
POP DX
POP CX
POP BX
POP AX
RET
DSPAX ENDP
;==================================
CODE ENDS
END START
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