MICROPROCESSOR QUIZ

The operating modes of 8255 A are called

Mode 0 and mode 2

Mode 0, mode 1 and mode 2

Mode 0 and mode 1

Mode 0, mode 2 and mode 3

TRUE ANSWER : ?
YOUR ANSWER : ?

Identify the non-maskable interrupt from the following

RST 7.5

RST 6.5

RST 4.5

RST 5.5

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following instruction is not possible in 8085?

POP 30 H

POP PSW

POP B

POP D

TRUE ANSWER : ?
YOUR ANSWER : ?

The ROM programmed during manufacturing process itself is called

EEPROM

MROM

EPROM

PROM

TRUE ANSWER : ?
YOUR ANSWER : ?

S0 and S1 pins are used for

None of these

acknowledging the interrupt

serial communication

indicating the processor’s status

TRUE ANSWER : ?
YOUR ANSWER : ?

FPGA means

Forward Parallel Gate Array

Field Parallel Gate Array

Field Programmable Gate Array

Forward Programmable Gate Array

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following statements for intel 8085 is correct?

Program Counter (PC) specifies the address of the instruction last executed

PC specifies the address of the instruction to be executed

PC specifies the address of the instruction being executed

PC specifies the number of instructions executed so far

TRUE ANSWER : ?
YOUR ANSWER : ?

Identify the programmable DMA controller from the following

8251

8253

8279

8257

TRUE ANSWER : ?
YOUR ANSWER : ?

The data lines of 8085 microprocessor are multiplexed with

status lines

higher order address lines

None of these

lower order address lines

TRUE ANSWER : ?
YOUR ANSWER : ?

The 8085 microprocessor enters into bus idle machine cycle whenever

DAD RP instruction is executed

None of these

RST 7.5 is recognized

INTR interrupt is recognized

TRUE ANSWER : ?
YOUR ANSWER : ?