Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!apple!sun-barr!newstop!texsun!vector!egsner!mic!convex!rosenkra
From: rosenkra@convex.com (William Rosencranz)
Newsgroups: comp.sys.atari.st.tech
Subject: Re: Reading the timer
Message-ID: <111333@convex.convex.com>
Date: 15 Dec 90 05:04:09 GMT
References: <17750001@hpgnd.grenoble.hp.com>
Sender: news@convex.com
Organization: Convex Computer Corporation; Richardson, TX
Lines: 27

In article <17750001@hpgnd.grenoble.hp.com> alex@hpgnd.grenoble.hp.com (Alexis MERMET-GRANDFILLES) writes:
>Hello there,
>
>1)
>	Does anybody know if there is a way ( should I say official ? )
>	to read the system time of the 520STE that will give a result
>	more precise than 2 seconds intervals.
>
>	The Bios or Xbios call GetTime() only returns hours,minutes, and
>	seconds divided by 2 ( ie from 0 to 30 ).
>
>	I need something much more precise than that. Any idea?

i wrote a gettimeofday(2) call which did the Gettime/Getdate, but also
gets the current value of the 200 Hz timer (just a system variable, long
at 0x4bc, access in Super mode). that gets u down to 5 ms which i then
use to get the second and stuff the rest in the tv_usec field of the
struct timeval (sys/time.h).

if u can't figure it out, i can send it to you...

-bill
rosenkra@convex.com

--
Bill Rosenkranz            |UUCP: {uunet,texsun}!convex!c1yankee!rosenkra
Convex Computer Corp.      |ARPA: rosenkra%c1yankee@convex.com