Date: 22 Feb 1993 17:13:10 -0500 (EST)
From: JMILLER AT CHESS DOT EISC DOT UTOLEDO DOT EDU
Subject: How to obtain equivalent code for _get_dosvect?
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Organization: Edison Industrial Systems Center


I am trying to port some code from Microsoft C and I need the function
_dos_getvect. The following is my best guess for the code to perform this
function but it does not work. I suspect the trouble may be that I don't know
how to declare the function as an _interrupt which is how it is declared in 
Microsoft C. This function fails with exception 33 (0x21) when it is called.
Thanks in advance for any help.

void * _dos_getvect(int i)
{
    struct SREGS segregs;
    union REGS inregs, outregs;
    inregs.h.al = (char) i;
    inregs.h.ah = 0x35;
    printf("%d\n", i);
    intdosx(&inregs, &outregs, &segregs);
    return (void *) (0xf0000000 + outregs.x.bx + 16 * segregs.es);
}

John Miller