shizhong_asm.asm

汇编语言时钟程序

STACK SEGMENT STACK
     DB 200 DUP(0)
STACK ENDS
CODE  SEGMENT
  ASSUME CS:CODE,DS:CODE,SS:STACK
   WELCOME DB ':)0401wqg*_*:$'
   COUNT DB 18
   HOUR1 DB "0"
   HOUR2 DB "0"
         DB ":"
   MIN1  DB "0"
   MIN2  DB "0"
         DB ":"
   SEC1  DB "0"
   SEC2  DB "0"
   HOUR  DB "0"
   MIN   DB "0"
   SEC   DB "0"
      A  DW ?
   OLD_IP DW ?
   OLD_CS DW ?      
  DISPLAY MACRO A
  MOV AH,0EH
  MOV AL,A
  MOV BX,0
  INT 10H
  ENDM
TRANS MACRO A,B,C
  MOV BL,10
  MOV AL,A;
  MOV AH,0
  DIV BL
  ADD AL,30H
  ADD AH,30H
  MOV B,AL
  MOV C,AH
  ENDM
START: 
  MOV AX,CODE
  MOV DS,AX
  MOV AH,35H
  MOV AL,1CH
  INT 21H
  MOV OLD_IP,BX
  MOV AX,ES
  MOV OLD_CS,AX
  MOV AX,CS
  MOV DS,AX
  MOV DX,OFFSET INTR1C
  MOV AH,25H
  MOV AL,1CH
  INT 21H
  MOV AH,2CH
  INT 21H
  MOV HOUR,CH
  MOV MIN,CL
  MOV SEC,DH
  MOV AH,31H
  MOV AL,0
  MOV DX,4000H
  INT 21H
INTR1C PROC FAR
  PUSH BX
  PUSH CX
  PUSH DX
  PUSH DS
  MOV AX,CS
  MOV DS,AX
  PUSHF                  
  CALL DWORD PTR OLD_IP 
  DEC COUNT
  JNE L0
  jmp LX
L0:
  jmp L2
LX:   
 L1:                    
  MOV AH,03H
  MOV BH,0
  INT 10H
  MOV A,DX
  MOV AH,02H
  MOV BH,0
  MOV DH,0
  MOV DL,58
  INT 10H
  TRANS HOUR,HOUR1,HOUR2
  TRANS MIN,MIN1,MIN2
  TRANS SEC,SEC1,SEC2
  DISPLAY WELCOME
  DISPLAY WELCOME+1
  DISPLAY WELCOME+2
  DISPLAY WELCOME+3
  DISPLAY WELCOME+4
  DISPLAY WELCOME+5
  DISPLAY WELCOME+6
  DISPLAY WELCOME+7
  DISPLAY WELCOME+8
  DISPLAY WELCOME+9
  DISPLAY WELCOME+10
  DISPLAY WELCOME+11
  DISPLAY WELCOME+12
  DISPLAY HOUR1
  DISPLAY HOUR2
  DISPLAY HOUR2+1
  DISPLAY MIN1
  DISPLAY MIN2
  DISPLAY MIN2+1
  DISPLAY SEC1
  DISPLAY SEC2
  DISPLAY 0DH
  MOV DX,A
  MOV AH,02H
  MOV BH,0
  INT 10H
  MOV COUNT,18
  INC SEC
  MOV CL,SEC
  SUB CL,60
  JNE L2
  MOV SEC,0
  INC MIN
  MOV CL,MIN
  SUB CL,60
  JNE L2
  MOV MIN,0
  INC HOUR
  MOV CL,HOUR
  SUB CL,24
  JNE L2
  MOV HOUR,0
L2:
  POP DS
  POP DX
  POP CX
  POP BX
  IRET
INTR1C ENDP
  CODE  ENDS
     END START