WorksheetsArchitecture of 8085
Total questions: 25
Worksheet time: 12mins
Each register is of _________ bit size
6
8
18
16
Select which is not a register in the Architecture
AX
BX
GX
CX
How does the 8085 processor handle maskable interrupts?
The 8085 processor handles maskable interrupts using the RST 7.5 instruction
The 8085 processor handles maskable interrupts using the TRAP input pin
The 8085 processor handles maskable interrupts using the HOLD and HLDA signals
The 8085 processor handles maskable interrupts using the INTR input pin and the interrupt enable flag.
What are the different types of interrupts supported by 8085?
TRAP, RST 7.5, RST 6.5, RST 5.5, INTR, RST 5.5
RST 2.5
RST 3.5
RST 4.5
Give an example of an instruction in 8085 that performs addition.
ADD
SUB
INC
MUL
What is the size of the instruction set in 8085?
246
512
1024
128
How many bytes of memory can 8085 address directly?
16384 bytes
4096 bytes
65536 bytes
1024 bytes
What is the purpose of memory address register (MAR) in 8085?
To store the result of arithmetic operations
To manage the cache memory
To control the input/output devices
To hold the address of the memory location being accessed or modified by the CPU.
Explain the function of instruction register in 8085.
The instruction register in 8085 is responsible for managing memory allocation.
The instruction register in 8085 controls the input/output operations of the processor.
The instruction register in 8085 holds the current instruction being executed by the processor.
The instruction register in 8085 stores the result of arithmetic operations.
Which register is used as a stack pointer in 8085?
BP
IP
PC
SP
What is the role of program counter in 8085 architecture?
Memory address of the next instruction to be executed
Manages the input/output operations of the CPU
Controls the flow of data between the CPU and memory
Stores the result of arithmetic and logical operations
Name the accumulator register in 8085.
D
C
B
A
What are the general purpose registers in 8085 architecture?
B, C, D, E, H, L
A, B, C, D, E, F
X, Y, Z, P, Q, R
M, N, O, P, Q, R
8085 is an ____Processor
5 bit
4 bit
16 bit
8bit
Address Bus
A0 - A15
A1 - A16
A15
All the above
Data Bus
unidirectional
bidirectional
no communication
None of the above
INTR
Interrupt Read
Interrupt Reverse
Interrupt Reset
Interrupt Request
INTA
Interrupt access
Interrupt Acknowledge
Interrupt avoid
none of these
8085 microprocessor has how many pins
49
31
40
20
4.What is the size of flag register in 8085?
5
7
8
10
Which pin is used for serial data transfer?
SID
SOD
What is the maximum number of memory locations that can be addressed by the 8085 microprocessor?
64kbytes
1Gbytes
32kbytes
256bytes
Which flag in the flag register of the 8085 microprocessor is set if the result of an arithmetic operation is zero?
Carry
Sign
Zero
Parity
What is the data bus width of the 8085 microprocessor?
8 bits
16 bits
4 bits
1 bit
The operating voltage level of the microprocessor is ___
2V
5V
12V
15V
