can I use 16-bit adder as 2 seperate 8-bit adders?

[omara007]

16 bit adder

Is there any adder architecture that supports this ? ..
if so, is there a Synopsys DW that implements it ? ..

 

[rsqf]

16 bit adder from 8 bit

yep ,i think u can re-design the 16bit add into a 2 8-bits add in RTL.

 

[omara007]

16-bit adder using 2 8-bit adders

yep ,i think u can re-design the 16bit add into a 2 8-bits add in RTL.

???

 

[Lixusan]

if you want to use two 8-bit adders, you use the adder with carry bit.
1, lower 8 bits add together. get the low carry bit
2, higher 8 bits add with the low carry bit. the result will be 17bit if you care the carry.

 

[omara007]

if you want to use two 8-bit adders, you use the adder with carry bit.
1, lower 8 bits add together. get the low carry bit
2, higher 8 bits add with the low carry bit. the result will be 17bit if you care the carry.

Does this work with signed numbers ??

 

[ammarabbasi]

 

[omara007]

Did you design it through RTL coding or schematics ?