p177.lst

有关汇编语言的资料

Microsoft (R) Macro Assembler Version 5.00                  10/22/4                                                             Page     1-1


				;p177.asm 
 0000				program	segment 
 0000				main	proc	  far 
					assume 	cs:program 
 0000  1E			start:	push	ds 
 0001  2B C0				sub	ax,ax 
 0003  50				push	ax		;和ret配合使用 
 0004  B5 04				mov	ch,4 
				;	mov	bx,ds		;bx中得到随机值
				 
 0006  B1 04			rotate:	mov	cl,4 
 0008  D3 C3				rol	bx,cl 
 000A  8A C3				mov	al,bl 
 000C  24 0F				and	al,0FH 
 000E  04 30				add	al,30H 
 0010  3C 3A				cmp	al,3AH 
 0012  7C 02				jl	printit		;0~9 
 0014  04 07				add	al,7		;A~F 
 0016  8A D0			printit:mov	dl,al 
 0018  B4 02				mov	ah,2 
 001A  CD 21				int	21H		;显示dl中字符 
 001C  FE CD				dec	ch 
 001E  75 E6				jnz	rotate		;构成循环 
 0020  CB				ret 
 0021				main	endp 
 0021				program	ends 
					end 
Microsoft (R) Macro Assembler Version 5.00                  10/22/4                                                             Symbols-1


Segments and Groups:

                N a m e         	Length	 Align	Combine Class

PROGRAM  . . . . . . . . . . . .  	0021	PARA	NONE	

Symbols:            

                N a m e         	Type	 Value	 Attr

MAIN . . . . . . . . . . . . . .  	F PROC	0000	PROGRAM	Length = 0021

PRINTIT  . . . . . . . . . . . .  	L NEAR	0016	PROGRAM

ROTATE . . . . . . . . . . . . .  	L NEAR	0006	PROGRAM

START  . . . . . . . . . . . . .  	L NEAR	0000	PROGRAM

@FILENAME  . . . . . . . . . . .  	TEXT  p177		


     26 Source  Lines
     26 Total   Lines
      7 Symbols

  50452 + 450556 Bytes symbol space free

      0 Warning Errors
      0 Severe  Errors