算術運算電路 - isu.edu.t · 連接至組合邏輯網路的輸入。...
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第 第 1 8 1 8 章 章 算術運算電路 算術運算電路
Transcript of 算術運算電路 - isu.edu.t · 連接至組合邏輯網路的輸入。...
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1 81 8
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Chap 18 2
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Chap 18 3
XXY Y XXXXYY
ShSh(shift (shift register)register)SI(serial input)SI(serial input)Sh=1Sh=1SISIx3(x3(y3)y3)ShShDDCECE
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Chap 18 4
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Chap 18 5
t0t0t1t1t2t2
t0t0XXYYx0x0y0y0c0c0s0s0c1c1s0s0c1c1x1x1y1y11818--2(b)2(b)s1s1c2c2
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Chap 18 6
s1s1c2c21818--2(c)2(c)x2x2y2y2
1818--2(e)2(e)
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Chap 18 7
0101010101110111t0t01+1+0=101+1+0=10si=0si=0=1=1(t1)(t1)
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Chap 18 8
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Chap 18 9
S0S0
Sh=1Sh=1S1S1
S0S0
S1S1StSt
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Chap 18 10
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Chap 18 11
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Chap 18 12
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Chap 18 13
StSt11ShShnnnnStSt111818--66aaS0S0StSt111818--66bbStSt00
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Chap 18 14
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Chap 18 15
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Chap 18 16
4444(4(4--Bit Bit Multiplicand Register)Multiplicand Register)44(Multiplier Register)(Multiplier Register)88
(Product Register)(Product Register)
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Chap 18 17
444444
(Add Signal(Add SignalAdAd))
C4C4
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Chap 18 18
44
ACCACC4455((ShSh))
(())(St=1)(St=1)
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Chap 18 19
(13(1311) 11)
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Chap 18 20
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Chap 18 21
S0S0(St=1)(St=1)S0S0(ACC)(ACC)4455S1S1(M)(M)
M=1M=1S2S2M=0M=000
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Chap 18 22
S3S3S5S5S7S7MM
((S2S2S4S4S6S6S8)S8)44
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Chap 18 23
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Chap 18 24
1818--9(b)9(b)MMStSt(Completion (Completion SignalSignalK)K)1818--9(b)9(b)
S0S0(St=1)(St=1)
S1S1M=0M=0S1S1M=1M=1S2S2S2S2
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Chap 18 25
nnnnnn--11(K)(K)
K=1K=1
K=0K=01818--9(c)9(c)1818--9(b)9(b)
S1S1K=1 K=1 M=0M=0M=1M=1S2 S2
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Chap 18 26
S2S2K=1K=1S3S3
00--
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Chap 18 27
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Chap 18 28
t0t0
t1t1St =1St =1t2t2M=1M=1AdAd
S2S2t3t3ShSh
t4t4M=1M=1AdAd=1=1
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Chap 18 29
t5t5t6t6
t7t71111K=1K=1M=1M=1S2S2T8T8ShSh=K=1=K=1
0000T9T9
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Chap 18 30
884444(Quotient)(Quotient)
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Chap 18 31
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Chap 18 32
99(Dividend Register)(Dividend Register)44(Divisor Register)(Divisor Register)
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Chap 18 33
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Chap 18 34
1351351313
11
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Chap 18 35
2211
311
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Chap 18 36
4411
5120
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Chap 18 37
663311
740
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Chap 18 38
(overflow) (overflow) (overflow) (overflow)
13513577
00 11 00 00 00 00 11 11 1100 11 11 1 1
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Chap 18 39
11
(LSB)(LSB)
44
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Chap 18 40
X8 X7 X6 X5 X4X8 X7 X6 X5 X4Y3 Y2 Y1Y0(Y3 Y2 Y1Y0(
))1515X8 X7 X6 X5 X4X8 X7 X6 X5 X4Y3 Y2 Y1Y0Y3 Y2 Y1Y0
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Chap 18 41
((ShSh) ) 11X8 X8 X7 X6 X5 X4X7 X6 X5 X4Y3 Y2 Y1Y 0Y3 Y2 Y1Y 0
(Su)(Su)
X8 X7 X6 X5 X4 X8 X7 X6 X5 X4 1 (1 ())
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Chap 18 42
SuSuLdLd55C=0C=0C=1C=1
C=0C=0
C=1C=111
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Chap 18 43
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Chap 18 44
((StSt))8844
C C 11
44
VV
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Chap 18 45
CC00S2S2C=1C=1CC00S5S5C=1C=1C=0C=0((StSt))11S0S0StSt00StStS1S1S5S500
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Chap 18 46
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Chap 18 47
55
b9b911b9b911(Y3 Y2 Y1Y0)(Y3 Y2 Y1Y0)(X8 X7 X6 X5 X4)(X8 X7 X6 X5 X4)
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Chap 18 48
C=0C=0C=b9C=b9
C=d8C=d8d8=1d8=1
11
d8d800
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Chap 18 49
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Chap 18 50
MUXMUXXX
busbus
bus mergerbus merger
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Chap 18 51
bus splitterbus splitterXX99X8 X7 X6 X5 X4X8 X7 X6 X5 X4X3 X3 X2 X1X2 X1X0X0
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Chap 18 52
XX1212--1010
Ld=1Ld=1Sh=1Sh=1Load=1Load=1Su=1Su=1 ORORLoadLoadSuSuLdLd
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Chap 18 53
Load=1Load=1MUXMUX00Load=0Load=0
X3 X2 X1X3 X2 X111Su=1Su=1MUXMUXXXX8 X7 X6 X5 X4X8 X7 X6 X5 X4X3 X2 X1X3 X2 X1X0X011
