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Altera_Forum's avatar
Altera_Forum
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11 years ago

LookUp Tables

Hello, I want to implement sine and cosine signals in vhdl to check a part of my code but i don't know how to initialize these sin and cos signals? please tell me what is the way to do it? i h...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

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I don't about your tools habits but you can convert negative numbers to positive (bit equivalent):

e.g. for n bits negative values (signed)

data = data + 2^n

--- Quote End ---

Thank's for your answer, but I did it and I got the following picture it Questa.

I can't submit it like a signed number. In radix I use decimal, but it also ansigned.

How can i transform it into unsigned?

http://s7.hostingkartinok.com/uploads/images/2014/11/504de2f5c58eae37f09eb5c10191f761.png (http://hostingkartinok.com/show-image.php?id=504de2f5c58eae37f09eb5c10191f761)