For design a 4-bit basic computer, look at the instruction set given to you, and determine which command signals the "AC" circult element works on and write the names of these commands next to them. Identify any of the BUS-INC-LD commands and draw the sub-control circuits of the "AC" element by using the and and or gates
For design a 4-bit basic computer, look at the instruction set given to you, and determine which command signals the "AC" circult element works on and write the names of these commands next to them. Identify any of the BUS-INC-LD commands and draw the sub-control circuits of the "AC" element by using the and and or gates
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Author:James Kurose, Keith Ross
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![For design a 4-bit basic computer, look at the instruction set given to you, and determine which command signals the "AC"
circult element works on and write the names of these commands next to them.
dentify any of the BUS-INC-LD commands and draw the sub-control circuits of the "AC" element by using the and and or
gates.
M-K
-MAR-K-1
Bus
Memory unit
16
Address
Mener Rrc
AND
Write
Read
R-MARI
AC-AC DR K-
ER-MAR
C-AC DE-CK-0
R-MARI
AC- DR, SC -0
MAR-AC IC
R-AR SC-0
MAR-K AR-AR-1
AR
ADD
LD INR CLR
PC
LD INR CLR
STA
DR
LD INR CLR
ALU
AC
R-MARI SC-
RET
Reter Rebrce
CLA
CLE
CMA
NC
CIR
LD INR CLR
AC
NPR
AC-AC
AC-AC-1
AC- AC AC3)-EE-ACO
AC-AC ACO-EE-AC3)
AC-NPR
OUTR-AC
IR
of
OUTR
Cleck
OLT
LT
BLT](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0dc2acf5-63dd-46e5-a4c0-53a4da617191%2Fb3e4bf95-27bc-4f07-9d79-b0b4129d9832%2Fpk181z_processed.jpeg&w=3840&q=75)
Transcribed Image Text:For design a 4-bit basic computer, look at the instruction set given to you, and determine which command signals the "AC"
circult element works on and write the names of these commands next to them.
dentify any of the BUS-INC-LD commands and draw the sub-control circuits of the "AC" element by using the and and or
gates.
M-K
-MAR-K-1
Bus
Memory unit
16
Address
Mener Rrc
AND
Write
Read
R-MARI
AC-AC DR K-
ER-MAR
C-AC DE-CK-0
R-MARI
AC- DR, SC -0
MAR-AC IC
R-AR SC-0
MAR-K AR-AR-1
AR
ADD
LD INR CLR
PC
LD INR CLR
STA
DR
LD INR CLR
ALU
AC
R-MARI SC-
RET
Reter Rebrce
CLA
CLE
CMA
NC
CIR
LD INR CLR
AC
NPR
AC-AC
AC-AC-1
AC- AC AC3)-EE-ACO
AC-AC ACO-EE-AC3)
AC-NPR
OUTR-AC
IR
of
OUTR
Cleck
OLT
LT
BLT
![Teble 1 Kamut seli
Fetch
AR -PC
R-MAR), PC -- PC +1
po DIS-Decode IR/4 . 7).
AR-IRO-3)
Bus
Tr
Memory unit
16 x8bit
Decode
Address
Memory Reference
AND
Write
Read
DR- MJAR]
AC-ACA DR, SC-0
DR-MAR]
AC-AC-DR. E-C, SC –0
DR–MIAR]
AC-DR, SC-0
MAR] --AC, SC 0
PC-AR, SC-0
MARI-PC AR-AR-1
PC-AR, SC-0
PC-M[ARI, SC +- 0
AR
TT
LO INR CLR
ADD
PC
LDA
LD INR CLR
DR
STA
BUN
BSA
LD INR CLR
ALU
AC
RET
Register-Reference
CLA
CLE
CMA
INC
CIR
CIL
INP
OUT
HLI
LD INR CLR
AC-0
E-0
AC-AC
AC-AC-1
AC-tr AC. AC3) -E,E-ACO)
AC- AC, AC(O) -E.E-AC{3)
AC-INPR
OUTR- AC
DI
INPR
IR
OUTR
Clock
8-bit common bus](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0dc2acf5-63dd-46e5-a4c0-53a4da617191%2Fb3e4bf95-27bc-4f07-9d79-b0b4129d9832%2Fpcewp5_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Teble 1 Kamut seli
Fetch
AR -PC
R-MAR), PC -- PC +1
po DIS-Decode IR/4 . 7).
AR-IRO-3)
Bus
Tr
Memory unit
16 x8bit
Decode
Address
Memory Reference
AND
Write
Read
DR- MJAR]
AC-ACA DR, SC-0
DR-MAR]
AC-AC-DR. E-C, SC –0
DR–MIAR]
AC-DR, SC-0
MAR] --AC, SC 0
PC-AR, SC-0
MARI-PC AR-AR-1
PC-AR, SC-0
PC-M[ARI, SC +- 0
AR
TT
LO INR CLR
ADD
PC
LDA
LD INR CLR
DR
STA
BUN
BSA
LD INR CLR
ALU
AC
RET
Register-Reference
CLA
CLE
CMA
INC
CIR
CIL
INP
OUT
HLI
LD INR CLR
AC-0
E-0
AC-AC
AC-AC-1
AC-tr AC. AC3) -E,E-ACO)
AC- AC, AC(O) -E.E-AC{3)
AC-INPR
OUTR- AC
DI
INPR
IR
OUTR
Clock
8-bit common bus
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