Embedded Systems Microprocesor Embedded System Online Exam Quiz
Embedded Systems Microprocesor Embedded System GK Quiz. Question and Answers related to Embedded Systems Microprocesor Embedded System. MCQ (Multiple Choice Questions with answers about Embedded Systems Microprocesor Embedded System
How an alternate set of the register can be identified in Z80?
Options
A : ‘Suffix
B : ‘Prefix
C : ,suffix
D : ,prefix
What is the clock frequency of Z80?
Options
A : 6 MHz
B : 8 MHz
C : 4 MHz
D : 2 MHz
What are the two register sets used in Z80?
Options
A : C’D’ and BC’
B : CD and BD
C : IV and MR
D : Main and alternate
Which of the following can be a paired set of 16-bit register?
Options
A : CD
B : HL
C : AB
D : EH
Which signal is used to differentiates the access from a normal memory cycle?
Options
A : HALT
B : RESET
C : MREQ
D : IORQ
What does m1 signal in Z80 describes?
Options
A : I/O operation status
B : Memory refresh output
C : Output pulse on instruction fetch cycle
D : Interrupt request input
By which instruction does the switching of registers take place?
Options
A : Instruction opcodes
B : AXX instruction
C : EXX instruction
D : Register instruction
Z80 is mainly based on
Options
A : Intel 8080
B : MIPS
C : TIMS
D : 8051
Which are the two additional registers of Z80?
Options
A : Interrupt and NMI
B : NMI and PSW
C : Interrupt vector and memory refresh
D : NMI and memory refresh
What is done in mode1 of Z80?
Options
A : Interrupt vector is supplied via the external bus
B : Interrupt vector is supplied via the peripherals
C : NMI gets started
D : Interrupt gets acknowledge from peripheral
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