Int 21h 6号功能
Nettet功能:从键盘读入字符. 入口参数:AH. =00H—读键盘. =10H—读扩展键盘,可根据0000:0496H单元的内容判断:. 扩展键盘是否有效. 出口参数: AH=键盘的扫描码. … Nettet6. jan. 2024 · int 21h功能使用说明 ①入口:ah = 00h 或ah = 4ch 功能:程序终止 ②入口:ah = 02h,dl = 数据 功能:写dl中数据到显示屏 3. 汇编 程序 ;功能描述:使用 INT …
Int 21h 6号功能
Did you know?
Nettet22. nov. 2024 · int 21h功能使用说明 ①入口:ah = 00h 或ah = 4ch 功能:程序终止 ②入口:ah = 02h,dl = 数据 功能:写dl中数据到显示屏 3.汇编程序 ;功能描述:使用int 21h功能调用实现屏幕显示a~z共26个字母 sstack segment stack ;堆栈段定义 dw 64 dup(?) ; … Nettet15. okt. 2015 · Tác dụng: Lệnh Int (Interrupt) được sử dụng để gọi một ngắt mềm (của BIOS hoặc MSDOS) trong chương trình hợp ngữ. Khi một ngắt mềm được gọi thì hệ thống sẽ thực hiện chương trình con phục vụ ngắt tương ứng với nó. Ví dụ 1: Int 10h ; gọi ngắt 10h của BIOS Int 20h ; gọi ngắt 20h của MSDOS
Nettet12. sep. 2024 · INT 21h常用功能号 目录 AH = 01h AH=02h AH=06h AH=09h AH=0Ah AH=4Ch AH = 01h 出口参数:AL=ASCII子符 功能说明:键但输入一个字符。 如 … Nettet3. nov. 2016 · ; INT 21H; (或者用INT 20H代替以上两行); END START ;-----;举例 ;分支程序设计练习;题目:将BX寄存器的内容以二进制格式显示在屏幕上,程序如下: code segment ORG 100H ASSUME CS:CODE,DS:CODE,ES:CODE,SS:CODE MAIN PROC NEAR begin: mov bx,1234h mov cx,16 loop1: mov dl,'0' rcl bx,1 jnc disp mov dl,'1 ...
NettetWhat is INT 21H and how does it work. Need to do four different functions in assembly 8086 using turbo pascal7. I'd like to know how INT 21H works and how to get system …
Nettet一、利用INT 21 09H号功能调用显示字符串 1、用A命令在100H处键入下列程序: MOV AH, 9 MOV DX,110 INT 21 INT 20 2、用A命令在110H处键入下列字符串的ASCII码: DB 'This is a sample!$' 3、用N命令和W命令将此程序 (包括数据区)存入文件名为AA.COM的磁盘文件中。 (存入前 BX:CX必须置为文件长度值)。 4、用Q命令退出DEBUG。 5、在DOS命 …
Nettet14. jan. 2015 · 六号功能是在DL=0FFH时,检查按键,在有键按下时存入AL,ZF置0,否则ZF置1 如满意请采纳 7 评论 分享 举报 浮生何梦 2015-01-14 · TA获得超过351个赞 关注 06 直接控制台 I/O 更多追问追答 追问 具体功能? 追答 不好意思啊,我也没有学过,这个是在网上查的,具体功能没有查到。 抢首赞 评论 分享 举报 2015-01-15 INT 21H的一号功 … black chest of drawer handlesNettet82 rader · 1. jan. 2009 · (临近期末、格式没有调整) 一、Intel中央处理器 32位的CPU按其主要功能通常可分为6大部件:总线接口部件、执行部件、指令预取部件、指令译码部件 … black chestnut thoroughbred reviewNettet21. jun. 2016 · But I wanted to make a hello world program without using win32 api but using only interrupts. ..start: section .text use32 mov dx, msg mov ah, 9 int 21h mov ah, 4Ch int 21h section .data msg db "Hello world!", 0Dh, 0Ah, "$". The batch script I set up to compile is (hello2 as input to compile): @echo off title asm echo Wpisz plik/sciezke … black chest of drawers and bedside cabinetsNettetint 21h mov ah,4ch;退出ah中的功能号4ch表示要返回DOS int 21h;调用DOS code ends end start 5.按6行×16列的格式顺序显示ASCII码为20H到7FH之间的所有字符,即每16个字符为一行,共6行。 每行中相邻的两个字符之间用空格字符分隔开。 试编写程序段并上机运行验证。 提示:程序段包括两层循环,内循环次数为16,每次内循环显示一个字符 … black chest of drawers gold handlesNettet25. des. 2010 · int 21h cmp al,0dh jne otherkey mov ax,speed+2 mov speed,ax jmp begin speed2: mov ah,01h int 21h cmp al,0dh jne otherkey mov ax,speed+4 mov speed,ax jmp begin speed3: mov ah,01h int 21h cmp al,0dh jne otherkey mov ax,speed+6 mov speed,ax jmp begin speed4: mov ah,01h int 21h cmp al,0dh gallow brothers kcdNettet23. aug. 2012 · 中断指令为int指令,格式为int 中断向量号,比较常用的中断向量号是21h,完整的中断指令为int 21h int 21h的作用是功能中断,即通知cpu要实现某种功 … gallowburn braeNettet21. okt. 2012 · The INT instruction is a software interrupt. It causes a jump to a routine pointed to by an interrupt vector, which is a fixed location in memory. The advantage of the INT instruction is that is only 2 bytes long, as oposed to maybe 6 for a JMP, and that it can easily be re-directed by modifying the contents of the interrupt vector. Share. gallow dance bpm