eg0904a.lst

宏汇编器

Microsoft (R) Macro Assembler Version 6.15.8803		    08/21/07 15:59:00
eg0904a.asm						     Page 1 - 1


				;eg0904a.asm for DOS
					include io16.inc
			      C .nolist    ; Do not list following content
			      C .list
			      C 
 0000					.data
 0000 42C88000 3E4CCCCD		f32d	real4 100.25,0.2	; 单精度浮点数
 0008				f64d	real8 -0.2109375	; 双精度浮点数
       BFCB000000000000
 0010				f80d	real10 100.25e9	; 扩展精度浮点数
       4023BABAECD400000000
 001A 00000000 00000000		varf	real4 ?,?
 0022 3E4CCCCD			i32d	dword 3e4ccccdh	; 0.2的编码（参见例题9-3）
 0000					.code
 0000  B8 ---- R		start:	mov ax,@data
 0003  8E D8				mov ds,ax
 0005  9B DB E3				finit	; 初始化FPU
 0008  D9 06 0000 R			fld f32d	; 压入单精度浮点数f32d
 000C  DD 06 0008 R			fld f64d	; 压入双精度浮点数f64d
 0010  DB 2E 0010 R			fld f80d	; 压入扩展精度浮点数f80d
 0014  D9 EB				fldpi	; 压入π（3.1415926…）
 0016  D9 16 001A R			fst varf	; 将栈顶数据π传送到变量VARF
 001A  D9 1E 001E R			fstp varf+4	; 将栈顶数据π弹出到变量VARF+4
 001E  66| A1 0004 R			mov eax,dword ptr f32d+4	; 取0.2（二进制编码）
 0022  66| 3B 06 0022 R			cmp eax,i32d	; 比较编码是否相同
 0027  74 04				jz dispy
 0029  B0 4E				mov al,'N'	; 不相同，显示N
 002B  EB 02				jmp dispn
 002D  B0 59			dispy: 	mov al,'Y'	; 相同，显示Y
 002F  E8 0000 E		dispn: 	call dispc

					exit 0
 0032  B8 4C00		     1		mov ax,4c00h+0
 0035  CD 21		     1		int 21h
					end start
Microsoft (R) Macro Assembler Version 6.15.8803		    08/21/07 15:59:00
eg0904a.asm						     Symbols 2 - 1




Macros:

                N a m e                 Type

exit . . . . . . . . . . . . . .	Proc


Segments and Groups:

                N a m e                 Size     Length   Align   Combine Class

DGROUP . . . . . . . . . . . . .	GROUP
_DATA  . . . . . . . . . . . . .	16 Bit	 0026	  Word	  Public  'DATA'	
STACK  . . . . . . . . . . . . .	16 Bit	 0400	  Para	  Stack	  'STACK'	 
_TEXT  . . . . . . . . . . . . .	16 Bit	 0037	  Word	  Public  'CODE'	


Symbols:

                N a m e                 Type     Value    Attr

@CodeSize  . . . . . . . . . . .	Number	 0000h	 
@DataSize  . . . . . . . . . . .	Number	 0000h	 
@Interface . . . . . . . . . . .	Number	 0000h	 
@Model . . . . . . . . . . . . .	Number	 0002h	 
@code  . . . . . . . . . . . . .	Text   	 _TEXT
@data  . . . . . . . . . . . . .	Text   	 DGROUP
@fardata?  . . . . . . . . . . .	Text   	 FAR_BSS
@fardata . . . . . . . . . . . .	Text   	 FAR_DATA
@stack . . . . . . . . . . . . .	Text   	 DGROUP
dispbb . . . . . . . . . . . . .	L Near	 0000	  External
dispbd . . . . . . . . . . . . .	L Near	 0000	  External
dispbw . . . . . . . . . . . . .	L Near	 0000	  External
dispcrlf . . . . . . . . . . . .	L Near	 0000	  External
dispc  . . . . . . . . . . . . .	L Near	 0000	  External
disphb . . . . . . . . . . . . .	L Near	 0000	  External
disphd . . . . . . . . . . . . .	L Near	 0000	  External
disphw . . . . . . . . . . . . .	L Near	 0000	  External
dispmsg  . . . . . . . . . . . .	L Near	 0000	  External
dispn  . . . . . . . . . . . . .	L Near	 002F	  _TEXT	
disprb . . . . . . . . . . . . .	L Near	 0000	  External
disprd . . . . . . . . . . . . .	L Near	 0000	  External
disprf . . . . . . . . . . . . .	L Near	 0000	  External
disprw . . . . . . . . . . . . .	L Near	 0000	  External
dispsib  . . . . . . . . . . . .	L Near	 0000	  External
dispsid  . . . . . . . . . . . .	L Near	 0000	  External
dispsiw  . . . . . . . . . . . .	L Near	 0000	  External
dispuib  . . . . . . . . . . . .	L Near	 0000	  External
dispuid  . . . . . . . . . . . .	L Near	 0000	  External
dispuiw  . . . . . . . . . . . .	L Near	 0000	  External
dispy  . . . . . . . . . . . . .	L Near	 002D	  _TEXT	
f32d . . . . . . . . . . . . . .	DWord	 0000	  _DATA	
f64d . . . . . . . . . . . . . .	QWord	 0008	  _DATA	
f80d . . . . . . . . . . . . . .	TWord	 0010	  _DATA	
i32d . . . . . . . . . . . . . .	DWord	 0022	  _DATA	
readbb . . . . . . . . . . . . .	L Near	 0000	  External
readbd . . . . . . . . . . . . .	L Near	 0000	  External
readbw . . . . . . . . . . . . .	L Near	 0000	  External
readc  . . . . . . . . . . . . .	L Near	 0000	  External
readhb . . . . . . . . . . . . .	L Near	 0000	  External
readhd . . . . . . . . . . . . .	L Near	 0000	  External
readhw . . . . . . . . . . . . .	L Near	 0000	  External
readmsg  . . . . . . . . . . . .	L Near	 0000	  External
readsib  . . . . . . . . . . . .	L Near	 0000	  External
readsid  . . . . . . . . . . . .	L Near	 0000	  External
readsiw  . . . . . . . . . . . .	L Near	 0000	  External
readuib  . . . . . . . . . . . .	L Near	 0000	  External
readuid  . . . . . . . . . . . .	L Near	 0000	  External
readuiw  . . . . . . . . . . . .	L Near	 0000	  External
start  . . . . . . . . . . . . .	L Near	 0000	  _TEXT	
varf . . . . . . . . . . . . . .	DWord	 001A	  _DATA	

	   0 Warnings
	   0 Errors