Nettet实验七八九实验七 分支程序实验目的1掌握利用间接转移指令jmp bx实现多岔分支的方法.2宏替换指令macro及endm.3符号扩展指令cbw.实验内容disp macro msglea dx,msgmov ah,9int 21hmov a Nettet3. jan. 2012 · The mov to ax then ds is because there possibly do to a limitation of what you can/cant perform a move immediate. maybe you cant do a mov ds,3000, in either …
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Nettetxor ax,ax stc mov cx,count mov si,offset array label1: adc ax,word ptr [si] add si,2 loop label1 label2: ———————- ———————- What will be the value in AX when control reaches label2? Show the calculation for all iteration for the value in AX. Write the final answer in hexadecimal. When the control reaches label2, AX ... Nettet汇编语言求达人解答1、指令“mov bx, [si]”的源操作数来自寄存器SI。. (3分) 正确 错误 2、8086 CPU. 1年前 1个回答. 已知指令mov ax, [bp+di+100h],其 …
Nettet微机系统与汇编语言复习微机系统与汇编语言简答题1. 设a186,b273q,c0bbh,它们之间的关系是 a.abc b.abcc.abc d.abc2. 80868088的存贮器组织是将存储器划分为段,可作为段的起始地址是 a.185a2 Nettet10. feb. 2024 · data ends code segment start: mov ax, @data mov ds, ax ; 接收从键盘输入的小写字母 mov ah, 01h int 21h mov input, al ; 将小写字母转换为大写字母 mov ah, 00h mov al, input and al, 11011111b mov output, al ; 在屏幕上显示转换后的大写字母 mov ah, 02h mov dl, output int 21h mov ah, 4ch int 21h code ends end start ``` 在上述代码中, …
Nettetmov ax,[arrayW+2] ; AX = 2000h mov ax,[arrayW+4] ; AX = 3000h mov eax,[arrayD+4] ; EAX = 00000002h A constant offset is added to a data label to produce an effective address (EA). The address is dereferenced to get the value inside its memory location. ; Will the following statements assemble? mov ax,[arrayW-2] ; ?? Nettetmov ax, var1 mov var2, ax 6 Copy smaller to larger.data count WORD 1count WORD 1.code mov ecx, 0 mov cx, count.data signedVal SWORD -16 ; FFF0h.code mov ecx, …
Nettetmov count, %ax # get the value at the address: add $1, %ax # increment it: mov %ax, count # store it back # release lock: mov $0, mutex # see if we're still looping: sub $1, …
Nettet10. jun. 2009 · MOV BX,OFFSET COUNT ;取得count的偏移地址1200即bx=1200H MOV SI, [BX] ;把ds: [bx]和ds: [bx+1]的内容赋给si(16位2个字节) ;即 (21200)和 (212001)的内容赋给si,si=1000H(高到底位) MOV AX,COUNT [SI] [BX] ;即ds: [bx+si+count]和ds: [bx+si+count+1]的内容赋给ax ;2000: [1200+1000+1200]和2000: … small dark spot on tongueNettet13. mar. 2024 · .code mov ax, @data mov ds, ax ; input the first character mov ah, 09h lea dx, msg1 int 21h mov ah, 01h int 21h mov char1, al ; input the second character mov ah, 09h lea dx, msg2 int 21h mov ah, 01h int 21h mov char2, al ; calculate the sum of ASCII codes mov al, char1 add al, char2 mov sum, al ; output the result mov ah, 09h … sonasoft and googlesmall dark spots on stomachNettet(2) mov ax,[bx] ;寄存器间接寻址 (3) mov ax.es:[bx] ;寄存器间接寻址 (4) mov ax,[bp] ;基址寻址 (5) mov ax,[bx+10h] ;相对基址寻址 (6) mov ax,val[bx] ;相对基址寻址 (7) mov ax,[bx][si] ;基址变址寻址 (8) mov ax,val[bx][si] ;相对基址变址寻址 (9) mov ax,es:val[si] ;相对变址 ... small dark purple flowersNettetmov ax,[1200h] 说明:源操作数为16位,al=1200h中的数据;ah=12001h中的数据(先低位后高位) 操作数默认为数据段(ds),允许重设. mov ax,es: [1200h] :为段重设 … small dark moths in houseNettet27. mar. 2024 · Any language that has functional constructs will count too (loops, comparisons, etc.) The instruction set to be analyzed is one of the most popular ones, the x86 ISA, and all examples will be written for execution on Intel or AMD processors. ... xor rcx, rcx mov ax, FFFF movsx ecx, ax mov rax, rcx. small dark spot on lower lipNettet19. jun. 2024 · MOV DX, [ BX ] ; [BX]指示一个字单元 * 适于数组、字符串、表格的处理 1.5寄存器相对寻址方式* 指令格式: MOV AX, COUNT [SI] 或 MOV AX, [COUNT+SI] … small dark spot on tooth