Mov al dl out 40h al mov al dh out 40h al
http://arantxa.ii.uam.es/~gdrivera/labetcii/practica0/alumno.htm NettetINT 21H ;Llamada a la interrupción del DOS 21h ;Fin del programa y vuelta al DOS. MOV AX,4C00H. INT 21H . START ENDP ;Fin del procedimiento START. CODE ENDS ;Fin …
Mov al dl out 40h al mov al dh out 40h al
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Nettet13. aug. 2012 · 0. There is an assembly language command: add dl, 48d. What is the exact purpose and meaning of this assembly language statement? When I write the … Nettet15. sep. 2024 · MOV DL , 40H ; DL = 40H MOV AH , 50H ; AH = 50H. ... MOV DH , AL ; DH = AL. HLT ; EXIT. Advertisement Advertisement New questions in Computer Science. Multiple Choice Three Correct answer 2) Following are types of Computer Networks: a) LAN b) WAN c) MAN d) PAN 4) Benefits of DBMS are ...
Nettet1 概述. 计算机指令：指挥计算机工作的 指示 和 命令; 内容：通常一条 指令 包括两方面的内容 . 操作码：说明指令的 操作功能（如：加、减、乘、除 等）; 地址码：存放 操作数 或 操作数的地址; 图示： 2 常见寻址方式. 寻址方式：寻找 操作数 的方式; 不同寻址方式的目的：扩大 寻址的范围 和 ... Nettet16／32位微机原理、汇编语言及接口技术 钱晓捷 第2版 课后习题答案_试卷
http://www.sce.carleton.ca/courses/94201/f01/94201.lecture9-12-processor.pdf Nettet7. aug. 2024 · So the resulting machine code is identical to mov al,42, but at source level the "character" gives more context to source reader. @Ped7g as written in the title, it's …
Nettet12. aug. 2011 · mov al, bl mov ah, bh (This code takes a minimum of 2 CPU-cycles and may give a stall on the second instruction because on some (older) x86 CPU's you get a lock on EAX) Here's what happens: EAX is read. (cycle 1) The lower byte of EAX is changed (still cycle 1) and the full value is written back into EAX. (cycle 1)
NettetRegister indirect addressing mode. This addressing mode allows data to be addressed at any memory location through an offset address held in any of the following registers: BP, BX, DI & SI. Example. MOV AX, [BX] ; Suppose the register BX contains 4895H, then the contents ; 4895H are moved to AX ADD CX, {BX} エスピス 予約Nettetmov al,dl ; make a copy of DL and al,00011111b ; clear bits 5-7 mov day,al ; save in day variable mov al,dh ; make a copy of DH shr al,1 ; shift right 1 bit mov ah,0 ; clear AH to 0 add ax,1980 ; year is relative to 1980 mov year,ax ; save in year and al,00001111b ; clear bits 4-mov month,al ; save in month variable エスビック インターロッキングNettetdonothing: mov dl,al mov ah,2 int 21h jmp start END ASCII CHAR . . . 30 0 31 1 32 2 33 3 34 4 35 5 36 6 37 7 38 8 39 9 . . . 41 A 42 B 43 C 44 D 45 E 46 F . . 61 a 62 b 63 ... mov al,62 mov dx,1000 out dx,al ; output the content of al to the output port whose ; address is in dx . SI, DI, and BP Registers: ... panella edmondoNettetmov dl,-80 sar dl,1 ; DL = -40 sar dl,2 ; DL = -10 10 ROL instruction • ROL (rotate) shifts each bit to the left • The highest bit is copied into both the Carry flag and into the lowest bit • No bits are lost CF mov al,11110000b rol al,1 ; AL = 11100001b mov dl,3Fh rol dl,4 ; DL = F3h 11 ROR instruction • ROR (rotate right) shifts each ... エスピス 神戸Nettetmov dl,’n’ mov ah,2 int 21h jmp exit found:mov dl,’y’ cld rep movsb hlt code ends end start 4.3题 data segment str1 db′abcde12345′,90 dup(′a′) count1 equ $-str1 data ends edata segment str2 db′e1234′ count2 equ $-str2 mul bl aam add al,dh aaa mov [di],al mov dh,ah inc si inc di loop again hlt 3.4题 mov si,offset dbuf1 mov ... panella e lorussohttp://c.biancheng.net/view/3593.html panel ladrilloNettetmov al, ss:disp[bx] mov al, es:disp[bp] mov al, cs:disp[si] mov al, ss:disp[di] You may substitute si or di in the figure above to obtain the [si+disp] and [di+disp] addressing modes. Note that Intel still refers to these addressing modes as based addressing and indexed addressing. panella e pompei