MS-DOS uses INT 21H for its main API functions which provide a low-level is the assembly code to transfer data from one file to other using INT 21H?. INT is an assembly language instruction for x86 processors that generates a software interrupt. For example, INT 21H will generate the software interrupt 0x21 (33 in decimal), causing the function pointed to by the 34th vector in the interrupt. int 21h Dos Interrupt. Int 21h is a common function. The INT 21H instruction in is a software interrupt to vector 21H. It is used for input/output operations.
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INT (x86 instruction)
Philip Ijt 7, 26 82 Retrieved from ” https: It comes under type 21h of various interrput tables, hence the lines of code goes like these as you mentioned.
INT (x86 instruction) – Wikipedia
INT is an assembly language instruction for x86 processors that generates a software interrupt. By calling it with different parameters in the registers mostly ah and al you could access various IO operations, string output and more.
Geoffrey 6, 2 17 From Wikipedia, the free encyclopedia.
It takes the interrupt number formatted as a byte value.
Sign up using Email and Password. Other INT instructions are encoded using two bytes. Thanks in advance for your answer. It is therefore entirely possible to use a far-call instruction to start the interrupt-function manually after pushing the flag register.
int 21h Dos Interrupt
I’m new to learning assembly language, and I’m wondering what the command int 21h means. This is accomplished by entering a bit value corresponding to a kernel function into the Unt register of the processor and then executing INT 0x Sign up using Facebook.
Depending on the context, compileror assemblera software interrupt number is often given as a hexadecimal value, sometimes with a prefix 0x or the suffix h.
Abraham Jacob 51 1 1.