计算机组成原理第二版唐朔飞课后习题答?- 百度文库

ϵݴ뵽 ABCĴС Tcpʱϵͼ1ʾ

cpABCbusT̬TcpD ͼ1

2̬1T0T1ƣȷT0ʱDߣԼT1ʱߡ1A̬2T2T3ƣȷT2ʱAߣԼT3ʱߡ2BT0T1T2T3ͼͼ2ʾ

A1̬2CPT0T1T2+T3T1T2T3BUS̬1T0+T12T3DB

ͼ(2)

13. ʲôߵݴʣЩйأ

ݴʼߴָλʱϴݵλͨÿ봫Ϣֽ߿ȺƵйأ߿Խ

ƵԽ죬ݴԽߡ

14. ߵʱƵΪ8MHZһڵһʱڡһвд16λݣߵĴǶ٣

⣺ڣf=8MHz,T=1/f=1/8M룬һڵһʱ

ԣߴ=16/1/8M = 128Mbps

15. һ32λϵͳУߵʱƵΪ66MHZ̴Ϊ4ʱڣԼߵݴʡݴʣɲȡʲôʩ

⣺ߴ=4*1/66M

ߵݴ=32/(4/66M)=528Mbps

ݴʣʱƵʡ߿Ȼ߼ߴڰʱڸ

16. 첽дϵͳУַʽΪ1ʼλ8λ1Уλ2ֹλҪÿ봫120ַ͵IJʺͱʡ ⣺һ֡1+8+1+2=12λ

ʲΪ1+8+1+2*120=1440bps Ϊ8*120=960bps

1. ͸桢桢CacheRAMSRAMDRAMROMPROMEPROMEEPROMCDROMFlash Memory

棺洢ڴִеijݡCPUֱӽдٶȽϸߡ

棺洢ڴŵǰݲִеijݣԼһЩҪñϢ

Cacheٻ洢CPU֮䣬ڽCPU֮ٶȲƥ⡣

RAM뵼ȡ洢Ҫе档 SRAM̬뵼ȡ洢 DRAM̬뵼ȡ洢

ROMĤʽ뵼ֻ洢оƬʱдݣԺֻܶд롣

PROMɱֻ洢ûҪȷдݣֻдһΡ EPROM߲дɱֻ洢Ҫ޸ʱֽȫݲȻٱ̡ʹդϵĵй¶ʵ֡

EEPROMдɱֻ洢 CDROMֻ͹̡

Flash Memoryٴ洢ƿʹ洢

2. Щڴ洢Ϣٶȡͼ۸/λ˵

𣺼мĴCache桢Ӳ̿ڴ洢Ϣ

ٶɸΪĴCache桢Ӳ̣ СΪĴCache桢Ӳ̣ ۸/λɸΪĴCache桢Ӳ̡

3. 洢IJνṹҪʲôطΪʲôҪЩΣιЩΣ

𣺴洢IJνṹҪCache--洢ϡ

Cache-ڴ洢ϵͳҪCPUôãеЧCPUôٶȼӿ죬ӽCacheٶȣѰַռλȴӽ档

-ڴ洢ϵͳҪãӳԱĽǶȿʹõĴ洢λ۽ӽڸ棬ٶȽӽ档

ۺ洢εã洢ϵͳʹﵽٶȿ졢λ۵͵ŻЧ

CACHE֮ϢȹȫӲԶɡ븨εĵĿǰ㷺洢ʵ֣븨һͨӲϵļ洢Աʹʵʿռ䣨ַռ䣩öַռ䣨߼ַռ䣩̣ʱӲԶַռʵռתˣϵĵȻתڳԱ˵͸ġ

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