2. Translate the lines from ORG 12 to ORG 64 in Table 7.2 to binary.
Computer Networking: A Top-Down Approach (7th Edition)
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ISBN:9780133594140
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Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Transcribed Image Text:2. Translate the lines from ORG 12 to ORG 64 in Table 7.2 to binary.
Microoperation
None
AC - AC + DR
AC+0
F3 Microoperation
None
AC + AC O DR
AC - AC
Symbel
NOP
ADD
CLRAC
INCAC
DRTAC
DRTAR
PCTAR
WRITE
Condition T Symbal
Always 1
DR(15)
AC(15)
AC0
000
001
F2
000
Microoperation
None
AC+ AC-DR
Symbol
NOP
Symbol
NOP
XOR
000
001
SUB
OR
AND
READ
ACTDR
INCDR
PCTDR
001
010
010
AC- AC V DR
AC- AC A DR
DR + MAR
DR + AC
DR+ DR +1
DR(0-10) + PC
010
COM
011
100
101
110
AC + AC +1
AC + DR
011
AC + shl AC
AC+ nhr AC
PC + PC +1
PC + AR
Reserved
SHL
100
100
101
110
111
SHR
AR + DR(O-10)
AR + PC
MJAR + DR
101
110
111
INCPC
ARTPC
111
Comments
Unconditional branch
Indirect address bit (conditional branch)
Sign bit of AC (conditional branch)
Zero value in AC (conditional branch)
CD
00
01
10
11
BR
00
Symbol Punction
JMP
CAR AD if condition T jump)
CAR CAR+1 condition 0
CAR + AD, SBR- CAR +1 if condition1 (subroutine call)
branch, save address
CAR+ CAR+1 if condition 0
CAR + SBR (return from subroutine)
CAR(2-5) - DR(11-14), CAR(0,1.6) - 0 (mapping)
01
CALL
10
RET
11
MAP
Table 1: From Mano's Architecture Book, table 7.1

Transcribed Image Text:5UU
-UUU
CD
BR
AD
Mlcrooperations
ORG O
Label
dON
READ
INDRCT
NEXT
FETCH
JMP
ADD:
JMP
ADD
ORG 4
JMP
OVER
dON
NOP
BRANCH:
JMP
CALL
FETCH
INDRCT
NOP
OVER:
JMP
FETCH
ARTPC
ORG 8
NOP
ACTDR
INDRCT
STORE:
NEXT
РЕТCH
JMP
WRITE
JMP
ORG 12
NOP
READ
CALL
INDRCT
NEXT
NEXT
FETCH
EXCHANGE:
JMP
ACTDR, DRTAC
WRITE
ORG 64
PCTAR
READ, INCPC
DRTAR
JMP
JMP
FETCH:
NEXT
NEXT
JMP
JMP
MAP
JMP
RET
INDRCT:
READ
DRTAR
NEXT
Table 2: From Mano's Architecture Book, table 7.2
Remember that the instruction format is:
I (bit 15), opcode (bits 14..11), and address (bits 10.0).
Contrud unic
Figure 74 Computer hanbearc sreliga
Figure 1: From Mano's Architecture Book, fig. 74
2.
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