作者poi915 (小婉)
看板Grad-ProbAsk
标题[问题] 98中兴成大计概
时间Fri Mar 20 18:10:58 2009
中兴和交大都出了这一题, 但我还是看不懂, 请问有人会这题吗><?
An imaginary computer has 1024 words in memory,
four data registers (R0, R1, R2, R3),
and 16 different instructions (like add, subtract...).
(a) What is the minimun size of an instrction in bits
if a typical instruction uses the following format:
add 500 R2. (500 denotes the memoty address bus)
(b) If the computer uses the same size of word for data
and instructions, what is the size of each data register?
(c) What is the minimum size of the address bus?
(d) What is the minimun size of the control bus?
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※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 125.224.128.182
1F：推 carlos77373:(a)最短指令共 10+2+4 = 16 bits 03/20 19:51
2F：→ carlos77373:(b) 16 bits (c) 10 bit (d) 4 bit 应该是这样 .. =.= 03/20 19:52