1
GATE EE 2006
MCQ (Single Correct Answer)
+2
-0.6
A software delay subroutine is written as given below: GATE EE 2006 Digital Electronics - Microprocessor Question 14 English

How many times $$DCR$$ $$L$$ instruction will be executed?

A
$$255$$
B
$$510$$
C
$$65025$$
D
$$65279$$
2
GATE EE 2005
MCQ (Single Correct Answer)
+2
-0.6
The $$8085$$ assembly language instruction that stores the content of $$H$$ and $$L$$ registers into the memory locations $$2050H$$ and $$2051H,$$ respectively, is
A
$$SPHL$$ $$2050H$$
B
$$SPHL$$ $$2051H$$
C
$$SHLD\,\,2050H$$
D
$$STAX\,\,2050H$$
3
GATE EE 2003
MCQ (Single Correct Answer)
+2
-0.6
The following program is written for an $$8085$$ microprocessor to add two bytes located at memory addresses $$1FFE$$ and $$1FFF$$
$$\eqalign{ & LXI\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,H,\,\,\,1FFE \cr & MOV\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,B,\,\,\,M \cr & INR\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,L \cr & MOV\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,A,\,\,\,M \cr & ADD\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,B \cr & INR\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,L \cr & MOV\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,M,\,\,\,A \cr & XRA\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,A \cr} $$

On completion of the execution of the program, the result of additional is found.

A
in the register $$A$$
B
at the memory address $$1000$$
C
at the memory address $$1F00$$
D
at the memory address $$2000$$
4
GATE EE 2001
MCQ (Single Correct Answer)
+2
-0.6
An Intel $$8085$$ processor is executing the program given below.
$$\eqalign{ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,MVIA,\,\,10H \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,MVIB,\,\,10H \cr & BACK:\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,NOP \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,ADD\,\,B \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,RLC \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,JNC\,\,BACK \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,HLT \cr} $$

The number of times that the operation $$NOP$$ will be executed is equal to

A
$$1$$
B
$$2$$
C
$$3$$
D
$$4$$
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