Date: Mon, 19 Apr 1999 10:11:45 +0300 (IDT) From: Eli Zaretskii X-Sender: eliz AT is To: djgpp AT delorie DOT com Subject: Re: high resolution timer In-Reply-To: <371a4ef6.1846448@noticias.iies.es> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Reply-To: djgpp AT delorie DOT com X-Mailing-List: djgpp AT delorie DOT com X-Unsubscribes-To: listserv AT delorie DOT com Precedence: bulk On Sun, 18 Apr 1999, Guillermo Rodriguez Garcia wrote: > Can anyone tell me how accurate is gettimeofday()? 55ms, of course: it gets the time from the DOS function 2Ch (as is clear from looking at the sources ;-). To solve your problem, either reprogram timer 2 (instead of the system timer 0, like `uclock' does) and use it in the same way as `uclock'; or program the CMOS clock to generate interrupt 70h every 976.6 microseconds and install a handler that counts these interrupts.