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Abid Rahman K

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CyberShot

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1 Answer

Does anyone know the steps for dividing unsigned binary integers using non-restoring division?

It's hard to find any good sources online.

i.e if A = 101110 and B = 010111

how do we find A divided by B in non-restoring division? What do the registers look like in eachstep?

Thanks!

algorithm binary division bits addition

edited Feb 5 '13 at 16:52 asked Aug 26 '12 at 20:51

Look at the source code of this web page. Raymond Chen Aug 26 '12 at 21:07

(My answer is a little late-reply. But I hope it will be useful for future visitors)

Algorithm for Non-restoring division is given in below image :

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Non-restoring division algorithm

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2/21/2014 binary - Non-restoring division algorithm - Stack Overflow

http://stackoverflow.com/questions/12133810/non-restoring-division-algorithm 2/3

In this problem, Dividend (A) = 101110, ie 46, and Divisor (B) = 010111, ie 23.

Initialization :

Set Register A = Dividend = 000000Set Register Q = Dividend = 101110( So AQ = 000000 101110 , Q0 = LSB of Q = 0 )Set M = Divisor = 010111, M' = 2's complement of M = 101001Set Count = 6, since 6 digits operation is being done here.

After this we start the algorithm, which I have shown in a table below :

In table, SHL(AQ) denotes shift left AQ by one position leaving Q0 blank.

Similarly, a square symbol in Q0 position denote, it is to be calculated later

2/21/2014 binary - Non-restoring division algorithm - Stack Overflow

http://stackoverflow.com/questions/12133810/non-restoring-division-algorithm 3/3

Abid Rahman K

14.6k 4 40 73

Hope all the steps are clear from the table !!!

answered Feb 5 '13 at 16:30

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