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1、?2002? .? ?1?10? 1.?_? A. ?B.?C. ? D. ? 2. ?_. A.(101001)2 B.(52)8 C.(101001)BCD D.(233)16 3. ?DRAM?512K?8? ?_? A. 8, 512 B. 512, 8 C. 18, 8 D. 19 ,8 4. ?_? A. ? B. ? C. ? D. ? 5?_?_?_? A. ?B.? C. ?D.?CCDC,DA6?CPU?“?”?m? CPU?m?CPU_? A. ?B. ? C. ? D. ? 7?_? A.?B. ? C.?D. ? 8?CRT?1024?1024?256? ?_? A.
2、 512KB B.1MB C. 256KB D. 2MB 9.?n? ?_? A.?B. ? C.?D. n?n? 10.?_? A? B.?I/O? C? D.?DMA?ACBDB,C,D?.?1.5?9?1. ? ?A._?B._,C. _? ? 2. ?A._? B._?C._? 3. ?CPU?A._?B._ ?C._? 4. ?A._? ?B._?PCI?C._? 5. ? A._,B. _,C._? 6. DMA?A._?B._? ?C._,?CPU? ? MMX? ? ? ?264MB/S? ?DMA? ?. ? 1. ?6?S,E,M?32? ?x,?x = (-1)S?(1.
3、M)?2E-128 ? ? ? 0 11 111 111111 111 111 111 111 111 111 11 X = 1+(1-2-23)?2127 ? 0 00 000 000000 000 000 000 000 000 000 00 X=1.0?2-128 ? ? 111 111 11 111 111 111 111 111 111 111 11 X= -1+(1-2-23)?2127 ? ? 00 000 000000 000 000 000 000 000 000 00 X=-1.0?2-1282.?6? CPU?cache?1900? ?100?cache?50ns,? ?
4、250ns. ?1?cache/? ? ?2? ?H = Nc / (Nc + Nm) = 1900 / (1900 + 100) = 0.95 ta=H?tc+(1-H)?tm=0.95?50ns+0.05?250ns=60ns(2) Cache/?e=tc/ta=50/60=0.833=83.3%(1)3.?6?X? ?k? ? 1? ?OP=6? ? ? 2?X=11? ?1M? ? ? ? ? ? ? ? ? ? ?218=256K?, ? ?18 + 3 + 3 + 6 + 2 = 32? ? ?1M? ? ?1M?4.?7?A3.1?IR? ?PC?M?R/W? ?AR?DR?AL
5、U? ?G? ?Yi?Y? ?R10?R1? ? ?“ADD R2, R0”?(R0) + (R2) ?R0? ? ?PC?A3.1?ADD?R0?R2? ?R0?A3.2? ?CPU? ?5.?6? ? ?50%?50%? (1)?1024?768,?3B? ?HZ,? ( 2 )? ? ? ?1024?768?3B?72/S = 165888 KB/S = 162 MB/S ?162MB/S ? 100/50 = 324MB/S (2)? ?DRAM? ? ?32?64?128? ? 20032003?2003? .? ?2?12? 1.?A._ ? B._?C._?D._? ? 2.?A
6、._? B._. ? ?C._? 3.?A._?,? B._?C._? 4.RISC?A._CPU?CPU?B._CPU? ?C._? 5.?A._?B._? C._? 6.IEEE1394?A._ ?B._?C._?CPU ? ? ? ? ? CISC ? ? ? PC?n ?.(9?X?=X0.X1X2Xn,?X=-X0+?Xi2-i i=1 ? ?1?X?X0=0X=X?=0.X1X2Xn=X12-1+X22-2+.+Xn2-n nn=0+?Xi2-i=-X0+ ?Xi2-ii=1i=1?X?=1.X1X2Xn=2+XX=1.X1X2Xn-2=-1+0.X1X2Xn n=-X0+?Xi2
7、-i i=1?.(9?x= -15, y= -13,?x?y = ? ? ?x?= 11111 y?= 11101 ?|? = 1111, ? = 1101 ? x0?0= 1?1 =0 ? 1 1 1 1 ?1 1 0 1 - 1 1 1 1 0 0 0 0 1 1 1 1 1 1 1 1 - 1 1 0 0 0 0 1 1 ?x?y?= 011000011? x?y = (11000011)2= (195)10 ?x?y = (-15)?(-13) = 195?.?9?CPU?16?A15A0?A0? ? ?16?(D15D0)?MREQ(? ? ?)?R/W(?)? ? ?08191?EPROM?
