http://35331.cn/lhd_6cdji5i6bd0weks4q8jb3z01x0bw3600n77_1.html Web题目. 已知 (SP)=2000H,指令PUSH AX 执行后(AX)=? 扫码下载作业帮. 搜索答疑一搜即得. 答案解析. 查看更多优质解析. 解答一. 举报. 执行PUSH指令时,先执行SP-2,然后把AX赋给SP, …
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WebApr 10, 2024 · Every point is critical for Florida as they look to lock up a wild-card spot, continuing Monday night against Toronto. Plus, full playoff projections, updated draft lottery standings and more. WebApr 15, 2001 · 1 push ax ;sp=1ffeH 2 push bx ;sp=1ffcH 3 pop ax ;sp=1ffeH ,bx=5000H ,ax=5000H 每执行一条push 语句就减两个字节,执行一条pop语句就加两个字节! push ax …
WebAX, CX, DX, BX, SP, BP, SI, and DI. 19. Which registers move onto the stack for a PUSHAD instruction? EAX, EBX, ECX, EDX, ESP, EBP, EDI and ESI. 20. Describe the operation of each of the following instructions: (a) PUSH AX AX is copied to the stack. AX is copied to the stack . (b) POP ESI A 32-bit number is retrieved from the stack and placed ... Web设(SP)=0028H,执行段内返回指令RET 6后,SP的内容是( )。. sp为堆栈寄存器,执行ret指令后,发生函数返回,sp寄存器是从高地址到低地址变化。. 所以执行ret6后,返回6 …
WebOct 26, 2024 · 选择题(各小题只有一个正确答案) (1)执行下列三条指令后: d mov sp,1000h push ax call bx a. (sp)= 1000h; b. (sp)=0ffeh; c. (sp)= 1004h; d. (sp)=0ffch; (2)要检查寄存器 al 中的内容是否与 ah相同,应使用的指令为: c a. and al, ah b. or al, ah c. xor al, ah d. Web执行指令"push ax"后,会将寄存器AX中的值压入堆栈中。指令执行完毕后,SP寄存器(栈指针寄存器)的值会减去2,指向下一个空闲的堆栈单元。这是因为堆栈中每个元素占用2个 …
Webmov sp,ax; 堆栈指针初值为2100h;标志寄存器fr赋值,flag=2115h mov ax,2115h; push ax; 入栈ax, sp=2100h-2=20feh popf; 标志寄存器fr赋值2115h, 出栈, sp=20fe+2=2100h;lahf;调试用语句,取标志寄存器低8位,检验 pushf ;调试用,标志寄存器入栈 pop ax; 调试用,取标志寄存器内容 ,检验
WebMyOS的bootloader原先只能加载小于64K的内核,结果今天把PCI相关的信息加入MyOS中后,MyOS内核的大小一下从48K上升到了128K,于是在不得已的情况下,修改了bootloader,很容易呵呵。代码如下: cmp bx, 0 jne OK push ax mov ax, es … drain or channel for waterWebThese first instruction shall push the value stored in AX (16-bit register) to the stack. This is done by subtracting a value of 2 (2 bytes) from SP. The new value of SP becomes 0xF81E. … emmy cutts njWebApr 11, 2024 · 画出堆栈存储器的物理地址及存储内容和sp指向的示意图。 push ax push bx push cx pop bx pop a. 第一 ... 7.3 设ax=1122,bx=3344h,cx=5566h,ss=095bh,sp=0040h,下述程. 序执行后ax,bx,cx,dx 4个通用寄存器内容是多少?画出堆栈存储器的物理地址及存储内容和sp指向的示意图。 drain ornamentsWebBut actually, this isn't even accurate. What you really need is something like this: mov [tmp], sp pushf ;push FLAGS sub [tmp], 2 popf mov sp, [tmp] mov [ss:sp], ax. Basically, push does something quite simple, but the details around that simple thing make it very worth making it's own instruction. drain or is in what countyWebSep 7, 2024 · 我们需要是十分清楚的是,push和pop指令同mov指令不同, CPU执行mov指令只需要一步, 而执行push、pop指令却需要两步操作. 执行push时:. 先改变sp,后 … drain or mapWebSep 7, 2024 · 我们需要是十分清楚的是,push和pop指令同mov指令不同, CPU执行mov指令只需要一步, 而执行push、pop指令却需要两步操作. 执行push时:. 先改变sp,后向ss:sp压入. 执行pop时:. 先读取ss:sp处的数据, 后改变sp. push、pop指令修改的只是sp,也就是说栈顶的变化范围最大 ... emmy crib bumperWebApr 14, 2024 · (1)使用DEBUG,将上面的程序段写入内存,逐条执行,根据指令执行后的实际运行情况填空。 mov ax,ffffmov ds,axmov ax,2200mov ss,axmov sp,0100 mov ax,[0] ;ax= 5BEAHadd ax,[2] ;ax= 5CCAHmov bx,[4] ;bx= 31F0Hadd bx,[6] ;bx= 6122H push ax ;sp= 00FEH ,修改的内存单元地址是 2200:00FE 内容为 5CCAHpush bx ... emmy deems photography