From: "pwillard" <pwillard AT mindspring DOT com>
Newsgroups: comp.os.msdos.djgpp
References: <8cg55n$1kl$1 AT mailint03 DOT im DOT hou DOT compaq DOT com> <200004061524 DOT UAA01453 AT midpec DOT com> <sB7H4.2784$x62 DOT 8311 AT typhoon DOT southeast DOT rr DOT com> <8cj7cu$6fskm$1 AT fu-berlin DOT de>
Subject: Re: How to get bios timer tick count?
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Date: Fri, 07 Apr 2000 23:30:14 GMT
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Got it, thanks...


Dieter Buerssner <buers AT gmx DOT de> wrote in message
news:8cj7cu$6fskm$1 AT fu-berlin DOT de...
> [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