From: buers AT gmx DOT de (Dieter Buerssner)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: How to get bios timer tick count?
Date: 6 Apr 2000 23:42:23 GMT
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

[There is bad line wrapping in the C++ style comment I cite]

pwillard AT mindspring DOT com (pwillard) wrote:

>#include <sys\farptr.h>
>#include <go32.h>
>
>int main (void)
>   {
>    long int x;

I would suggest, to make x an unsigned long.

>
>    // Ok, the formula for accessing DOS memory using
>the_go32_conventional_mem_selector()
>    // command is segment * 16 + offset, so we need to access 0x40 * 0x10
>+0x6c
>    // This assumes the first argument in PTR in pascal is segment and
>thelatter offset.
>
>    x = _farpeekl(_go32_conventional_mem_selector(), 0x40 * 0x10 + 0x6C);
>
>    printf("The BIOS tick count is %d.", x);

The %d is wrong for long int. Use %ld instead (or %lu if you make
x unsigned long). Yes, I do know, that %d will work with DJGPP, but
more by accident, than by design.

>   }

-- Regards, Dieter