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help with CLA Adders in VHDL!!!!

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cretafarm

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cla vhdl

hello everyone,

I took the Digital Electronics course this semester, and my teacher gave me the project in VHDL :

8-bit CLA adder
8-bit CLA adder with 2 x 4-bit CLA adders
16-bit CLA adder
16-bit CLA adder rith 2 x 8-bit CLA adders

Since Im new to this area, IM TOTALLY CONFUSED ABOUT GENERATE - PROPAGATE etc..... However, i managed to write the vhdl code for the 8-bit CLA adder and the 16-bit CLA adder. My problem is with the other two circuits "8-bit CLA adder with 2 x 4-bit CLA adders" and "16-bit CLA adder rith 2 x 8-bit CLA adders".

PLEASE if anyone can help me by sending the vhdl codes for these circuits, it would help me a LOT......

thank you all
cretafarm
 

for 2 x 4-bit CLA adder you need to write the code of 4-bit CLA and call them as component.

The same can be done with 2 x 8-bit CLA adder.
You need to see only syntax for this purpose.
 

You just have to implement the main CLA block whit the Propagate-Generate units and then use this as component to build more complicated cla adders
 

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    cretafarm

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