http://spike.scu.edu.au/%7Ebarry/interrupts.html Nettet19. des. 2010 · ah=06h:直接控制台IO; 入口参数:DL=0FFH 表示输入;出口参数:若有输入,al=输入字符,否则al=0
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Nettet31. mar. 2024 · mov ah, 06h. int 21h. jz inout ;若无,则继续. mov ah,4ch ;否则返回. int 21h. code ends. end start. 接线图如下: 2.实验3-2:自设计试验. 自行设计完成本实验,要求,8255a口工作在方式一输入,b口工作在方式一输出,利用方式一的控制信号,使数据从输入到输出人为可控。 Nettet11. sep. 2024 · code segment assume cs:code start:mov al,10100110b mov dx,283h out dx,al l1: mov dx,282h al,dxword 文档 al,02hjz l1 mov dx,281h al,dxcall delay mov dx,280h out dx,al l2: mov dx,282h al,80hjz l2 jmp l3 loop start l3:mov al,00 mov dx,280h out dx,al mov ah,4ch int 21h delay proc near word 文档 pushcx mov bx,3ffh for1:mov cx,0ffffh …
Nettet11. sep. 2024 · code segment assume cs:code start:mov al,10100110b mov dx,283h out dx,al l1: mov dx,282h al,dxword 文档 al,02hjz l1 mov dx,281h al,dxcall delay mov … Nettetint 21h mov dl,[si+2] ;取个位数送显 or dl,30h mov ah,02h int 21h mov ah,4ch int 21h code ends end start 2. 十进制数转换为七段码。为了在七段显示器上显示十进制数,需要把十进制数转换为七段代码。转换可采用查表法。
Nettet19. apr. 2024 · INT 21h / AH=1 - read Character from standard input, with echo, result is stored in AL. INT 21h Service no. 01h Description Example MOV AH, 1 INT 21h. Skip to content. Sunday, April 2, 2024. Signals and its Classifications; ... INT 21h Service no. 06h: Description: Example MOV AH, 6 Nettetmov dh,0 again: mov al,[si] mov ah,9 int 21h ret disp endp exit: mov ah,4ch int 21h code ends end start 4.6题 code segment assume cs:code start: mov ah,2ch int 21h mov bl,ch mov cl,4 call bcd rol bl,cl 《微型计算机原理及应用》 习题参考答案及实验项目 [第1章] 1.1题 (1)64h (2)dch (3)ech (4)14h 1.2题 (1 ...
Nettet18. feb. 2012 · int 21h ;call DOS next: mov ah,01h ;read keyboard and echo function request int 21h ;call DOS mov cx,offset msg2 ;set up to display message cmp al,0 ;check if extended ascii char jne disp ;no, tack jump mov ah,01h ;read keyboard and echo function request
Nettet8. mar. 2005 · 1、new新建文件——》选择exe assume cs:code, ds:data data segment db 'hello world!', 0dh, 0ah ,'$' ; 换行0dh 加 回车0ah ;enter db 0dh, 0ah ,'$'; 回车换行 data ends code segment start: mov ax,data mov ds,ax. 下面是闰年程序的代码示例:(我将以这个闰年程序演示如何建立lib函数库) data segment ... scorpion fish fillet castNettet9. apr. 2024 · DATAREA ENDS ;***** PROGRAM SEGMENT ;----- MAIN PROC FAR ;MAIN PART OF PROGRAM ASSUME CS:PROGRAM,DS:DATAREA,SS:ST_SEG … prefab archway kitsNettet27. sep. 2024 · What is the use of mov ah,10 in int 21h Mostly we use like mov ah,0a for string input but why mov ah,10? prefab attachment to old houseNettetmov ah, 0 . int 10h . INT 10h / AH = 01h - set text-mode cursor shape. ... INT 21h/06h. INT 21h/07h. INT 21h/09h. INT 21h/0Ah. INT 21h/0Bh. INT 21h/0Ch. INT 21h/0Eh. INT 21h/19h. INT 21h/25h. INT 21h/2Ah. INT 21h/2Ch. INT 21h/35 h. INT 21h/39 h. INT 21h/3A h. INT 21h/3B h. INT 21h/3C h. INT 21h/3D h. INT 21h/3E h. INT 21h/3F h. INT … scorpion fish habitatNettet19. apr. 2024 · INT 21h Service no. 06h: Description: Example MOV AH, 6 MOV DH, ‘a’ INT 21h; output Character. MOV AH, 6 MOV DH, 255 INT 21h; get Character from … prefab australian homesNettet格式: MOV AH, 4CH INT 21H 功能:终止当前程序的运行,并把控制权交给调用的程序,即返回DOS系统,屏幕出现DOS提示符,如“C: \ >”,等待DOS命令。 8.直接输入 … prefab attic hip trussesNettet26. mai 2009 · 入口参数:AH=05H DL=待输出字符的ASCII码 出口参数:无 (6)、功能06H 功能描述:控制台 (如:键盘、屏幕)输入/输出。 如果输入/输出操作被重定向, 那么,将无法判断文件是否已到文件尾,或磁盘已满 入口参数:AH=06H,DL=输入/输出功能选择 出口参数:若DL=00H-FEH,则此功能为输出,DL为待输出字符的ASCII码; … prefab army shelter