Instruction Set of the Basic Computer Description AND M to AC Symbol Hex code AND 0 or 8 ADD 1 or 9 Add M to AC, carry to E LDA 2 or A STA 3 or B BUN 4 or C BSA 5 or D ISZ 6 or E CLA 7800 CLE 7400 CMA 7200 CME 7100 CIR 7080 CIL 7040 INC 7020 Load AC from M Store AC in M Branch unconditionally to m Save return address in m and branch to m+1 Increment M and skip if zero Clear AC Clear E Complement AC Complement E Circulate right E and AC Circulate left E and AC Increment AC, carry to E SPA 7010 Skip if AC is positive SNA 7008 Skip if AC is negative SZA 7004 Skip if AC is zero SZE 7002 Skip if E is zero HLT 7001 INP F800 OUT F400 SKI F200 Halt computer Input information and clear flag Output information and clear flag Skip if input flag is on SKO F100 Skip if output flag is on ION F080 Turn interrupt on IOF F040 Turn interrupt off 3

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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computer architecture and organization
according to bilow table picture
how to find the equivalent machine codes of the basic computer whose command format is given bilow based on bilow table picture
2A25
1A26
7040
4A27
7001
in A427 since 4 is 0100 shouldnt it be  BUNA27 since 0100 indicates D4 in the table according to table bilow or its STA A27 or my idea is wrong what will be there values

Instruction Set of the Basic
Computer
Description
AND M to AC
Symbol
Hex code
AND
0 or 8
ADD
1 or 9
Add M to AC, carry to E
LDA
2 or A
STA
3 or B
BUN
4 or C
BSA
5 or D
ISZ
6 or E
CLA
7800
CLE
7400
CMA
7200
CME
7100
CIR
7080
CIL
7040
INC
7020
Load AC from M
Store AC in M
Branch unconditionally to m
Save return address in m and branch to m+1
Increment M and skip if zero
Clear AC
Clear E
Complement AC
Complement E
Circulate right E and AC
Circulate left E and AC
Increment AC, carry to E
SPA
7010
Skip if AC is positive
SNA
7008
Skip if AC is negative
SZA
7004
Skip if AC is zero
SZE
7002
Skip if E is zero
HLT
7001
INP
F800
OUT
F400
SKI
F200
Halt computer
Input information and clear flag
Output information and clear flag
Skip if input flag is on
SKO
F100
Skip if output flag is on
ION
F080
Turn interrupt on
IOF
F040
Turn interrupt off
3
Transcribed Image Text:Instruction Set of the Basic Computer Description AND M to AC Symbol Hex code AND 0 or 8 ADD 1 or 9 Add M to AC, carry to E LDA 2 or A STA 3 or B BUN 4 or C BSA 5 or D ISZ 6 or E CLA 7800 CLE 7400 CMA 7200 CME 7100 CIR 7080 CIL 7040 INC 7020 Load AC from M Store AC in M Branch unconditionally to m Save return address in m and branch to m+1 Increment M and skip if zero Clear AC Clear E Complement AC Complement E Circulate right E and AC Circulate left E and AC Increment AC, carry to E SPA 7010 Skip if AC is positive SNA 7008 Skip if AC is negative SZA 7004 Skip if AC is zero SZE 7002 Skip if E is zero HLT 7001 INP F800 OUT F400 SKI F200 Halt computer Input information and clear flag Output information and clear flag Skip if input flag is on SKO F100 Skip if output flag is on ION F080 Turn interrupt on IOF F040 Turn interrupt off 3
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