[SOLVED] how to make brent kung adder?

[hiten09]

i want to make 2n+1 modulo adder using brent kung algorithm, i got the actual process of brent kung but i dont know how it is using black cell and grey cell, i am looking for some material or guidance on brent kung adder, i am attaching one schematic of 8 bit adder and one reference paper which i am following, pls do share your knowledge as soon as possible

View attachment paper7.pdf

thank you

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i want to know when to use black and grey cell, i am trying for n bit so i need general solution for that..

 

[2Ambitious]

This might help:
**broken link removed**