p178_new.lst

有关汇编语言的资料

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


				;p178.asm,求变量Y中1的个数送count 
				;********************************* 
 0000				data	segment 
 0000  0002 R			addr	dw	number 
 0002  ????			number	dw	? 
 0004  ????			count	dw	? 
 0006				data	ends 
				;********************************* 
 0000				code	segment 
					assume	cs:code,ds:data 
 0000				main	proc	far 
 0000  1E			start:	push	ds 
 0001  2B C0				sub	ax,ax 
 0003  50				push	ax 
 0004  BB ---- R			mov	bx,data 
 0007  8E DB				mov	ds,bx 
 0009  8B 1E 0000 R			mov	bx,addr 
 000D  8B 17				mov	dx,[bx] 
 000F  83 FA 00			repeat:	cmp	dx,0 
 0012  74 06				jz	exit 
 0014  D1 E2				shl	dx,1 
 0016  14 00				adc	al,0 
 0018  EB F5				jmp	repeat 
 001A  A3 0004 R		exit:	mov	count,ax 
 001D  CB				ret	 
 001E				main	endp 
 001E				code	ends 
					end 	start 
Microsoft (R) Macro Assembler Version 5.00                  10/22/4                                                             Symbols-1


Segments and Groups:

                N a m e         	Length	 Align	Combine Class

CODE . . . . . . . . . . . . . .  	001E	PARA	NONE	
DATA . . . . . . . . . . . . . .  	0006	PARA	NONE	

Symbols:            

                N a m e         	Type	 Value	 Attr

ADDR . . . . . . . . . . . . . .  	L WORD	0000	DATA

COUNT  . . . . . . . . . . . . .  	L WORD	0004	DATA

EXIT . . . . . . . . . . . . . .  	L NEAR	001A	CODE

MAIN . . . . . . . . . . . . . .  	F PROC	0000	CODE	Length = 001E

NUMBER . . . . . . . . . . . . .  	L WORD	0002	DATA

REPEAT . . . . . . . . . . . . .  	L NEAR	000F	CODE

START  . . . . . . . . . . . . .  	L NEAR	0000	CODE

@FILENAME  . . . . . . . . . . .  	TEXT  p178_new		


     28 Source  Lines
     28 Total   Lines
     11 Symbols

  50306 + 450702 Bytes symbol space free

      0 Warning Errors
      0 Severe  Errors