Subject:
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Re: RCX Firmware speed versus legOS
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 12 Apr 2002 12:56:08 GMT
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Viewed:
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700 times
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> I was surprized at the wide disparity between 'empty loop' and loop
> with 'reading the sensor'. I suspect there is significant compile time
> code optimization at play here.
Of course you are right. <shame on me>
> I use Hitachi's H8 tool chain and not GCC.
Hm? You don't use the gcc toolchain for the H8 but another compiler? Can
you tell a bit more about your compiler?
I revised my testings without optimizing out the calculation and the empty
loop took 0.82 sec. for 10.000 iterations. Reading the light sensor
increases the needed time by 35%. The Firmware program increased only by
9%, but runs 300 times slover. Mileage will vary, but I think an advantage
of factor 100 or up between a compiled program and a Firmware program can
safely be assumed.
Mike
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Message is in Reply To:
 | | Re: RCX Firmware speed versus legOS
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| "Michael Obenland" <obenland@t-online.de> wrote in message news:GuEtHr.M39@lugnet.com... (...) but only (...) assume (...) I was surprized at the wide disparity between 'empty loop' and loop with 'reading the sensor'. I suspect there is significant (...) (22 years ago, 11-Apr-02, to lugnet.robotics)
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