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design in xilinx ISE
by 1google on May 10, 2011 
1google
Posts: 9 Joined: Apr 15, 2011 Last seen: Jun 7, 2011 

hello everyone
I want to do the sum â��â��and subtraction of values â��â��as design in xilinx ISE i had in input values â��â��for example 2 3 5 4 1 i must do the sum then substruct for exemple 2+35+41 I have two ideas, but with problems 1 I use ACC8 which is the sum or subtraction if add = 1 > sum add = 0 > subtraction, but I do not understand how it works at the phase sousraction here is an example in the attachments 2I made â��â��a block that is a compliment to 2 if the number is signed but how can i do th test if you have any idea I really need thank you in advance
design.rar (28 kb)

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