Subject:
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Re: Rotating through a four-bit nibble
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 22 Sep 2005 04:06:00 GMT
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Viewed:
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1276 times
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In lugnet.robotics, Kevin L. Clague wrote:
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LEGO firmware does not support the concept of shifting. Originally NQC didn’t
support the concept of shifting. I pointed out to Dave Baum that he could use
multiply and divide to support shifting, so he added it to NQC. It has been
many years, but I think shifting is only allowed with constant shift amounts.
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Why in the world wouldn’t the firmware support shifting? The hardware
certainly does.
Heh, using multiply and divide to simulate shifting is kind of backwards.
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Message has 1 Reply:
 | | Re: Rotating through a four-bit nibble
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| "Jordan Bradford" <bradfj23REMOVE_THIS...uwosh.edu> wrote in message news:In7A20.1sK1@lugnet.com... (...) The problem is, multiplication and division to a binary CPU, as is the case here, is just a whole series of instructions. Here is the basic (...) (19 years ago, 22-Sep-05, to lugnet.robotics)
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Message is in Reply To:
| | Re: Rotating through a four-bit nibble
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| (...) Well, your example has the nibble of interest in the middle of the register. Due to boundary conditions, it might be cheaper to have it in the least significant bits of the 16 bit register. In your example you are rotating by an aribtrary (...) (19 years ago, 21-Sep-05, to lugnet.robotics)
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