Need Explanation For This C Code.... Please help

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somebody please explain this code

MIDL

void setpos(int p)      
{
    union REGS regs;
    regs.h.ah = 2;
    regs.h.bh = 0;
    regs.h.dh = 4;
    regs.h.dl = p;
    int86(0x10,&regs,&regs);
}

Posted 2-Dec-10 9:39am

Aryan9999

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User 7429338 · Accepted Answer · 2010-12-02T10:03:00

That's sort of assembly code within a C program. The assignments are to store values in the processor registers and then call interrupt 0x10.
Interrupt 0x10 with the value 2 in register AH means to set the cursor position.
Register BH is the screen page (0 means the visible screen) and registers DH and DL are the x and y coordinates on the screen.

Have a look here[^] for information on interrupts and here[^] for information specifically about interrupt 10.