Abstract
在這一篇論文□面，分別針對不同商數範圍與多餘度，我們提出三種不同 架構的除法器，並有效降低商數選擇器的複雜度．主要是以魏教授的架構 為基礎，予以增加重覆區域的面積，並將基數提高到八．在設計過程中， 我們解決原有設計中的缺陷，並縮少商數選擇器所佔的面積．三種設計, 皆都經過理論的證明，與反覆的模擬與驗證，並在0.6um製程的單元庫設 計出來．可以發現，依照不同的多餘度與商數選擇方式，可以在面積與速 度上作交換考量． In this thesis, three kinds of radix-8 dividers with different redundancy and different quotient selection schemes are proposed to reduce the complexity ofquotient selection table. Comparing with previous work of Wey's method,we enlarge both the overlapped region and the radix from 4 to 8 in the P-D plotWe compared three of them in Boolean level, logic level, and physical layoutlevel. The design of higher radix divider are also presented with number ofinputs for the quotient selection table.