1. Machine Code
Source:

2. Assembly instruction vs machine code ― example 1
Q2. (20%) [Machine code]
The machine code of 8051 instructions can be found in the following websites:
Please fill in missing instructions or machine code in the table below.
Assembly instruction
Machine code (in binary)
MOV R2 (2 pts) , H (2 pts)
MOV R3 (2 pts) , #12H (2 pts)
GOBACK:
NOP
DJNZ R4,GOON
JMP GOBACK
GOON:
INC @R1
(1 point per nibble)
Source: EE3046-Fall exam - midterm (edsim51).doc

3. Assembly instruction vs machine code ― example 2
Q5. (20%) [Machine code]
The machine code of 8051 instructions can be found in the following websites:
Please fill in missing instructions or machine code in the table below.
Assembly instruction
Machine code (in binary)
MOVX A , @DPTR
ADDC A , #6CH
GOBACK:
MUL AB
DJNZ R5,GOON
SETB C
JMP GOBACK
GOON:
CPL C
A4H H
DD 03 H
D3 H
FA H
B3 H
EE Spring - exam - midterm (edsim51) - Part I & II question & answer.docx

4. Instruction
Addr.
Binary
Hex.
GOBACK: MUL AB
A4H
DJNZ R5,GOON
DDH
03H
SET C
D3H
JMP GOBACK
80H
FAH
GOON: CPL C
B3H