There are two Creative points in my design: one is that in C9318, addition unit is one-bit serial mode. Thereby, completing a decimal BCD code addition operation needs four-clock period.
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美
- 本設計的創(chuàng )新之處在于:一、C9318 采用一位串行加法器,即每次只能進(jìn)行一位二進(jìn)制的運算,完成一位十進(jìn)制BCD 碼的加法運算需要四個(gè)時(shí)鐘周期,況且BCD 碼的校驗要等到下一個(gè)指令周期時(shí)才能完成。
