1
GATE EE 2023
Numerical
+2
-0.67

In a given 8-bit general purpose micro-controller there are following flags.

C-Carry, A-Auxiliary Carry, O-Overflow flag, P-Parity (0 for even, 1 for odd)

R$$_0$$ and R$$_1$$ are the two general purpose registers of the micro-controller.

After execution of the following instructions, the decimal equivalent of the binary sequence of the flag pattern [CAOP] will be _________.

MOV R0, +0x60

MOV R1, +0x46

ADD R0, R1

Your input ____
2
GATE EE 2014 Set 1
MCQ (Single Correct Answer)
+2
-0.6
An output device is interfaced with $$8$$ bit microprocessor $$8085$$$$A.$$ The interfacing circuit is shown in figure GATE EE 2014 Set 1 Digital Electronics - Microprocessor Question 5 English

The interfacing circuit makes use of $$3$$ line to $$8$$ line decoder having $$3$$ enable lines $${E_1}\,\,\overline E {}_2,$$ $$\,\overline E {}_3$$. The address of the device is

A
$${50_H}$$
B
$${5000_H}$$
C
$${A0_H}$$
D
$${A000_H}$$
3
GATE EE 2014 Set 2
MCQ (Single Correct Answer)
+2
-0.6
In an $$8085$$ microprocessor, the following program is executed GATE EE 2014 Set 2 Digital Electronics - Microprocessor Question 4 English

At the end of program, register $$A$$ contains

A
$$60H$$
B
$$30H$$
C
$$06H$$
D
$$03H$$
4
GATE EE 2011
MCQ (Single Correct Answer)
+2
-0.6
A portion of the main program to call a subroutine $$SUB$$ in an $$8085$$ environment is given below:
$$\eqalign{ & LXI\,\,\,\,\,\,\,\,\,\,\,\,\,D\,\,\,DISP \cr & LP\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,CALL\,\,\,SUB \cr} $$

It is desired that control be returned to $$LP+DISP+3$$ when the $$RET$$ instruction is executed in the subroutine. The set of instructions that precede the $$RET$$ instruction in the subroutine are

A
$$\eqalign{ & POP\,\,\,D \cr & DAD\,\,\,H \cr & PUSH\,\,\,D \cr} $$
B
$$\eqalign{ & POP\,\,\,H \cr & DAD\,\,\,D \cr & INX\,\,\,H \cr & INX\,\,\,H \cr & INX\,\,\,H \cr & PUSH\,\,\,H \cr} $$
C
$$\eqalign{ & POP\,\,\,H \cr & DAD\,\,\,D \cr & PUSH\,\,\,H \cr} $$
D
$$\eqalign{ & XTHL \cr & INX\,\,\,D \cr & INX\,\,\,D \cr & INX\,\,\,D \cr & XTHL \cr} $$
GATE EE Subjects
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12