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- Date: Fri, 4 Mar 94 20:48 GMT0
- From: Darryl Piper <drpiper@cix.compulink.co.uk>
- Subject: Re: load average patches for MiNT 1.10 + patches
- To: mint@atari.archive.umich.edu
- Message-Id: <memo.597985@cix.compulink.co.uk>
-
-
- In-Reply-To: <2128.9403040748@elvis.earth.ox.ac.uk>
-
-
- >> hmm. i haven't tried but i would suggest just using the 200 Hz timer
- >>counter (_hz_200) and doing calculations elsewhere... because the 200 Hz
- >>interrupt runs at level 6 and the longer you run at levels >= 5 (6) the
- >>easier you lose characters on serial ports. (receiver overrun...)
- >
- >The calculations are only done once per second, so the impact on the system
- >is minimal. The calculations themselves are merely a few adds, subtracts and
- >divides, all integer arithmetic, so not particularly slow to do.
-
- I say use the VBL routine to check your timer, but check the 200 Hz
- timer from in their. That way your one second timer will be accurate to
- either 1/50, 1/60, 1/70 second. This will cut down on system overhead,
- which is in my opion becoming too much for 8 MHz 68000s.
-
- Bye now,
-
- Darryl
-
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