Newsgroups: comp.robotics
Path: brunix!news.Brown.EDU!noc.near.net!howland.reston.ans.net!usc!elroy.jpl.nasa.gov!decwrl!netcomsv!netcom.com!geo
From: geo@netcom.com (George Pontis)
Subject: 68HC11 performance question
Message-ID: <geoCD5JoK.8J1@netcom.com>
Keywords: 68HC11 timing interrupt
Organization: NETCOM On-line Communication Services (408 241-9760 guest)
Date: Fri, 10 Sep 1993 19:05:07 GMT
Lines: 14

Hello,
Can someone answer a few questions regarding HC11 execution speed ?

I'm considering a design for an embedded system that needs to control
4 stepper motors, two of them microstepped at a 5KHz rate. If I were to
implement a system using an HC11 that had a hardware interrupt rate at
5 KHz, how much processor bandwidth would remain for computation ?

I'm looking for a very rough %, or approximate # clocks that an ISR 
could spend on useful work after stack mangement and other overhead.

Thanks in advance for any answers, comments, hysterical laughter, etc...
-- 
George Pontis ( geo@netcom.COM )
