http://www.uwenku.com/question/p-dtdevjto-ks.html WebMay 28, 2024 · 8086汇编如何实现段间转移,或者如何修改CS(经测试网上的方法都是只在debug中有效)?. 环境:DOSBOX 程序需要进行段间转移,修改CS,但是无论是使 …
IBM 5150 - int 21h corrupts segment registers - Stack Overflow
WebMay 28, 2024 · 8086汇编如何实现段间转移,或者如何修改CS(经测试网上的方法都是只在debug中有效)?. 环境:DOSBOX 程序需要进行段间转移,修改CS,但是无论是使用retf还是jmp dword ,程序直接运行都会停下来 不动。. 但是在debug中…. WebJul 24, 2009 · 附录2 dos功能调用( int 21 )一览表 dos功能调用,功能号在ah中,并设好其余的入口参数,向dos发出int21h命令,最后获得出口参数。 调用号 功能 入口参数 出口参数 00h 程序终止 cs=psp段地址 01h 键盘输入字符 al=输入的字符 02h 显示输出 dl=显示的字符 03h 串行设备输入 al ... shipwreck seeds 1.19
DOS API - Wikipedia
WebSep 2, 2024 · The general solution for this is to use the fact that DS (and ES) points to the PSP segment in an EXE program at startup. You can also use the fact that there is an Int 20h instruction in the first word of the PSP. We can use a FAR Return to PSP_Segment:0000h to execute the Int 20h in the PSP to exit the program. WebApr 24, 2024 · INT 21H will generate the software interrupt 0x21 (33 in decimal), causing the function pointed to by the 34th vector in the interrupt table to be executed, which is typically an MS-DOS API call. This simply means that you are using function 01h of the Interrupt type 21... where 01h is as you said is to read character from standard input, with ... WebFeb 17, 2009 · 你上面的表述说“调用完dos功能后要中断”是错误的。 不是调用完dos功能后才中断,而是中断指令int 21h才是去调用dos功能。 int 21h的中断向量,指向内存里的dos核心模块中系统功能部分的入口,进入该模块后,dos会根据ah的内容转向不同的子功能 … shipwreck secrets