Subject:
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Re: Speed of RCX interpreting bytecodes: slow
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Mon, 3 Jan 2000 00:43:42 GMT
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Viewed:
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1179 times
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In lugnet.robotics.rcx, Roger Hamlett writes:
> In lugnet.robotics.rcx, Ben Jackson writes:
> > While working on the barcode scanner I decided to see just how fast the RCX
>
> It is important to realise, that the RCX, does not perhaps do the
> interpretation in the way you think. In each 'loop', it executes one
> instruction from each of the possible threads,
Are you sure you mean each of the POSSIBLE threads? I did test to see whether
it was slower to count to 1000 with another task running, and it was. Not half
as fast, only about 30% slower.
--Ben
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Message has 1 Reply:
 | | Re: Speed of RCX interpreting bytecodes: slow
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| (...) half (...) Yes, it seems to switch between two 'modes', one being effectively single tasking, and the other multi-tasking. This gives the change you are seeing. The 'loop' time, can be measured very easily with a scope, by setting a motor (...) (25 years ago, 3-Jan-00, to lugnet.robotics.rcx)
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Message is in Reply To:
| | Re: Speed of RCX interpreting bytecodes: slow
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| (...) Yes. It is important to realise, that the RCX, does not perhaps do the interpretation in the way you think. In each 'loop', it executes one instruction from each of the possible threads, and also reads the A-D's, on each sensor, and updates to (...) (25 years ago, 2-Jan-00, to lugnet.robotics.rcx)
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