北京理工大学汇编语言实验二 算术运算类操作实验.doc

实验二 算术运算类操作实验（基础与设计）六、流程图设计输出转换输出结束2NYCx=cx-1取值Cx=4按制定操作带符号计算，取得结果Cx=0？开始1结束按制定操作计算，取得结果结果存入栈中取值开始结束输出做除法取值y与低位相减判断cf标志位10高位减1取值v01高位减1判断cf标志位取值328与低位相减10高位进位判断cf标志位与低位相加取值z相乘取值x，y开始3七、实验结果1）计算状态标志表达式结果CFAFZFOFSFPF087H+034HBBH000001087H-034H53H000001087H*034H1B6CH000000087H/034H2H0000000C2H+5FH121H0100010C2H-5FH63H0100010C2H*5FH47FEH0000000C2H/5FH2H000000CF:进位标志位，运算结果需要进位为1，不需进位为0AF:辅助进位标志：第3为有进位为1，无进位为0ZF:零标志位：结果为0则为1，非0为0OF:溢出标志位：进行有符号数运算时超范围为1，未超为0SF:符号位标志：结果为负为1，非负非0PF:奇偶标志位：结果1的个数为偶数为0，奇数为12）16进制结果10进制结果FIRST+SECOND57C9199C58298002FIRST-SECOND333C1312333613123）结果：012c余数：0001八、汇编程序DATAS SEGMENT ;此处输入数据段代码 num11 dw 087h num12 dw 034h num21 dw 0c2h num22 dw 05fh first db 45h,82h,96h,57h second db 12h,46h,83h,45h third db 0,0,0,0 forth db 0,0,0,0 x dw 300 y dw 2 z dw 333 v dw 4 temp dw 0 tempcx dw 0tab db 0123456789abcdef DATAS ENDSSTACKS SEGMENT ;此处输入堆栈段代码 dw 32 dup(0)STACKS ENDSCODES SEGMENT ASSUME CS:CODES,DS:DATAS,SS:STACKSSTART:;此处输入代码段代码;1.1 MOV AX,DATAS MOV DS,AX mov ax,STACKS mov ss,ax mov ax,0040h mov sp,ax mov temp,101h call print call newline ;div mov ax,num11 mov bx,num12mov dx,0 div bx pushf;标志及结果入栈 push ax ;mul mov ax,num11 mov bx,num12 mul bx pushf;标志及结果入栈 push ax ;sub mov ax,num11 mov bx,num12 sub ax,bx pushf;标志及结果入栈 push ax ;add mov ax,num11 mov bx,num12 add ax,bx pushf;标志及结果入栈 push ax ;output mov cx,4 l: mov tempcx,cxpop tempmov ax,0bbhcall printcall spacepop tempcall printcall newlinemov cx,tempcxloop l;1.1end;1.2call newlinemov temp,102hcall printcall newline;div mov ax,num21 mov bx,num22mov dx,0 div bx pushf;标志及结果入栈 push ax ;mul mov ax,num21 mov bx,num22 mul bx pushf;标志及结果入栈 push ax ;sub mov ax,num21 mov bx,num22 sub ax,bx pushf;标志及结果入栈 push ax ;add mov ax,num21 mov bx,num22 add ax,bx pushf;标志及结果入栈 push ax;output mov cx,4 ll:mov tempcx,cxpop tempmov ax,0bbhcall printcall spacepop tempcall printcall newlinemov cx,tempcxloop llcall newline;1.2end;2.1mov temp,201hcall printcall newline;addmov cx,4lp1:mov tempcx,cx lea bx,first mov ax,0 mov al,ds:bx+cx-1 lea bx,second adc al,ds:bx+cx-1 pushf lea bx,third mov ds:bx+cx-1,al popf jnc skip01 lea bx,first mov ax,0 mov al,ds:bx+cx-2 inc alskip01:loop lp1 ;outputlea bx,third mov dh,bx mov dl,bx+1 mov temp,dx call print lea bx,third mov dh,bx+2 mov dl,bx+3 mov temp,dx call print call newline;sub mov cx,4lp2:mov tempcx,cx lea bx,first mov ax,0 mov al,ds:bx+cx-1 lea bx,second sbb al,ds:bx+cx-1 pushf lea bx,third mov ds:bx+cx-1,al popf jnc skip04 lea bx,first mov ax,0 mov al,ds:bx+cx-2 dec alskip04:loop lp2;output lea bx,third mov bx,al popf lea bx,third mov dh,bx mov dl,bx+1 mov temp,dx call print lea bx,third mov dh,bx+2 mov dl,bx+3 mov temp,dx call print call newline call newline;2.1end;2.2 mov temp,202hcall printcall newline ;addmov cx,4lp3:mov tempcx,cx lea bx,first mov ax,0 mov al,ds:bx+cx-1 lea bx,second adc al,ds:bx+cx-1daa pushf lea bx,third mov ds:bx+cx-1,al popf jnc skip01 lea bx,first mov ax,0 mov al,ds:bx+cx-2 inc alskip01:loop lp3 ;outputlea bx,third mov dh,bx mov dl,bx+1 mov temp,dx call print lea bx,third mov dh,bx+2 mov dl,bx+3 mov temp,dx call print call newline;sub mov cx,4lp4:mov tempcx,cx lea bx,first mov ax,0 mov al,ds:bx+cx-1 lea bx,second sbb al,ds:bx+cx-1dac pushf lea bx,third mov ds:bx+cx-1,al popf jnc skip04 lea bx,first mov ax,0 mov al,ds:bx+cx-2 dec alskip04:loop lp4;output lea bx,third mov bx,al popf lea bx,third mov dh,bx mov dl,bx+1 mov temp,dx call print lea bx,third mov dh,bx+2 mov dl,bx+3 mov temp,dx call print call newline call newline;2.2end;3 mov temp,300hcall printcall newline mov temp,328 mov ax,x mov bx,y imul bx mov bx,z add ax,bx;429 jnc skip1 inc dxskip1:mov bx,temp sbb ax,bx;100 jnc skip2dec dxskip2: mov bx,v sbb ax,bx jnc skip3;21dec dxskip3:mov bx,yidiv bx;21/20=1.1push dxpush axpop tempcall printcall spacepop tempcall print;3endMOV AH,4CHINT 21H;submainprint:;asic码输出子程序mov ax,temp;第1位mov cx,4shr ah,clmov al,ahmov ah,0lea bx,tabadd bx,axmov dl,ds:bxmov ah,2int 21hmov ax,temp;第2位and ah,0fhmov al,ahmov ah,0lea bx,tabadd bx,axmov dl,ds:bxmov ah,2int 21hmov ax,temp;第3位mov cx,4shr al,clmov ah,0lea bx,tabadd bx,axmov dl,ds:bxmov ah,2int 21hmov ax,t