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

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omara007

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16 bit adder

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

16 bit adder from 8 bit

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

16-bit adder using 2 8-bit adders

rsqf said:
yep ,i think u can re-design the 16bit add into a 2 8-bits add in RTL.
Click to expand...
???
 

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.
 

Lixusan said:
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.
Click to expand...

Does this work with signed numbers ??
 

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