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int 21h means

Helpful Hyena answered on May 22, 2021 Popularity 3/10 Helpfulness 1/10

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INT 21H ;Most calls to the DOS API are invoked using software interrupt 21h (INT 21h)
		;By calling INT 21h with a subfunction number in the AH processor 
        ;register and other parameters in other registers, various DOS services 
        ;can be invoked.

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Contributed on May 22 2021

Helpful Hyena

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INT 21H ;Reads a character from the standard input device without copying it 
		;to the display. 
        ;If no character is ready it waits until one is available.

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Contributed on May 22 2021

Helpful Hyena

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int 21h means

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INT 21H ;call the interrupt handler 0x21 which is the DOS Function dispatcher.

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Contributed on May 22 2021

Helpful Hyena

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