work2.asm

本人的汇编上机的简单的小程序

data segment
      table dw date, time, function, endo
      instruction db "Input number between 1-4 for(1:date;2:time;3:a sentence;4:exit): $"
      string db "Hello World!$"
      y db "YEAR: $"
      m db "month: $"
      d db "day: $"
      h db "hour: $"
      mi db "minute: $"
      s db "second: $"
      year dw ?
      month db ?
      day db ?
      hour db ?
      minute db ?
      second db ?
      tenW dw 0ah
      tenB db 0ah
data ends
stack1 segment para stack
      dw 20h dup(0)
stack1 ends
code segment
      assume ds:data,ss:stack1,cs:code
start:
      mov ax,data
      mov ds,ax
rotate: mov dx,offset instruction
      mov ah,09h
      int 21h
      mov ah,01h
      int 21h
      xor ah,ah
      sub al,30h
      dec al
      shl al,1
      mov bx,offset table
      add bx,ax
      mov ax,[bx]
      push ax
      mov dl, 0dh                 ; 换行
      mov ah,02h
      int 21h
      mov dl, 0ah
      mov ah,02h
      int 21h
      pop ax
      jmp ax


date: mov ah,2ah                       ;显示当前日期
      int 21h
      mov year,cx
      mov month,dh
      mov day,dl
;************年的显示***********
      mov dx,offset y
      mov ah,09h
      int 21h
      mov dx,0
      mov ax,year
      mov cx,4
lop1: div tenW
      add dl,30h
      push dx
      mov dx,0
      loop lop1
      mov cx,4
lop2: pop dx
      mov ah,02h
      int 21h
      loop lop2
      mov dl, 0dh                 ; 换行
      mov ah,02h
      int 21h
      mov dl, 0ah
      mov ah,02h
      int 21h
;*****************************
;************月的显示*********
      mov dx,offset m
      mov ah,09h
      int 21h
      mov ah,0
      mov al,month
      mov cx,2
lop3: div tenB
      add ah,30h
      push ax
      xor ah,ah
      loop lop3
      mov cx,2
lop4: pop ax
      mov dl,ah
      mov ah,02h
      int 21h
      loop lop4
      mov dl, 0dh                 ; 换行
      mov ah,02h
      int 21h
      mov dl, 0ah
      mov ah,02h
      int 21h
;******************************
;***********天的显示***********
      mov dx,offset d
      mov ah,09h
      int 21h
      mov ah,0
      mov al,day
      mov cx,2
lop5: div tenB
      add ah,30h
      push ax
      xor ah,ah
      loop lop5
      mov cx,2
lop6: pop ax
      mov dl,ah
      mov ah,02h
      int 21h
      loop lop6
      mov dl, 0dh                 ; 换行
      mov ah,02h
      int 21h
      mov dl, 0ah
      mov ah,02h
      int 21h
;***************************
      jmp rotate


time: mov ah,2ch                   ;显示当前时间
      int 21h
      mov hour,ch
      mov minute,cl
      mov second,dh
;***********小时的显示**********
      mov dx,offset h
      mov ah,09h
      int 21h
      mov ah,0
      mov al,hour
      mov cx,2
lop7: div tenB
      add ah,30h
      push ax
      xor ah,ah
      loop lop7
      mov cx,2
lop8: pop ax
      mov dl,ah
      mov ah,02h
      int 21h
      loop lop8
      mov dl, 0dh                 ; 换行
      mov ah,02h
      int 21h
      mov dl, 0ah
      mov ah,02h
      int 21h
;***************************
;***********分的显示*********
      mov dx,offset mi
      mov ah,09h
      int 21h
      mov ah,0
      mov al,minute
      mov cx,2
lop9: div tenB
      add ah,30h
      push ax
      xor ah,ah
      loop lop9
      mov cx,2
lop10: pop ax
      mov dl,ah
      mov ah,02h
      int 21h
      loop lop10
      mov dl, 0dh                 ; 换行
      mov ah,02h
      int 21h
      mov dl, 0ah
      mov ah,02h
      int 21h
;***************************
;***********秒的显示*********
      mov dx,offset s
      mov ah,09h
      int 21h
      mov ah,0
      mov al,second
      mov cx,2
lop11: div tenB
      add ah,30h
      push ax
      xor ah,ah
      loop lop11
      mov cx,2
lop12: pop ax
      mov dl,ah
      mov ah,02h
      int 21h
      loop lop12
      mov dl, 0dh                 ; 换行
      mov ah,02h
      int 21h
      mov dl, 0ah
      mov ah,02h
      int 21h
;***************************
      jmp rotate


function:
      mov dx,offset string
      mov ah,09h
      int 21h
      mov dl, 0dh                 ; 换行
      mov ah,02h
      int 21h
      mov dl, 0ah
      mov ah,02h
      int 21h
      jmp rotate
      
endo: mov ah,4ch
      int 21h
code  ends
      end start