Assume that, DS $=1000$H$,$ SS $=2000$H$,$ BX $=0500$H$,$ BP $=0600$H$,$ SI $=3000$H$,$ DI $=4000$H$.$ Compute the physical address of memory operand of the below instruction:

MOV CL$,[$BP $+$ DI$]$

$23600$H

$14500$H

$24600$H

$13500$H

D$765$H:$?????$H $=$ DABC$0$H$.$ Find the missing value.

$0123$H

$2600$H

$2210$H

$3570$H

Suppose R$0=2$EH$,$ A $=$ F$3$H and internal RAM location $2$EH $=76$H$.$ If the following $8051$ instruction is executed

XCH A$,$ @R$0$

What will be the value of A and RAM Location $2$EH$?$

A $=$ F$6$H and $2$EH $=7$FH

A $=$ F$3$H and $2$EH $=76$H

A $=73$H and $2$Eh $=$ F$6$H

A $=76$H and $2$EH $=$ F$3$H

Assume that DS $=$ FF$00$H in $8086$ microprocessor. What will be the data segment physical address range?

F$0000$H to FFFFFH

$00000$H to FFFFFH

FF$000$H to FFFFFH

FFF$00$H to FFFFFH

Which segment registration will be used by $8086$ during string destination operation?

DS

SS

ES

CS

If the following sequence of instructions are executed

ADD R$3,$ R$1,$ R$2$

SUB R$1,$ R$4,$ R$5$

Then which kind of pipeline hazard is possible?

RAR

RAW

WAR

WAW

In the context of programming languages, which feature is more characteristic of a high$-$level language compared to a low$-$level language?

Efficient code execution

Direct memory manipulation

Abstraction from hardware details

Hardware$-$specific optimizations

What is the time taken by one machine cycle if crystal frequency is $20$MHz$?$

$1\mathrm{.}085$ micro seconds

$0\mathrm{.}60$ micro seconds

$0\mathrm{.}75$ micro seconds

$1$ micro seconds

If an $8-$bit processor has $12-$address lines then the maximum memory that it can address is$?$

$8$KB

$4$KB

$16$KB

$2$KB

For this program the content in AL is$?$

MOV AL$,$ AAH

MOV CL$,02$H

STC

RCR AL$,$ CL

ROL AL$,1$

HLT

D$5$H

D$3$H

D$4$H

D$2$H

Assume that, a sting length of $10$bytes is available from starting address $1000$H to ending address $1009$H$.$ If DF is set to $1$ then what value should be loaded in the index register?

$1000$H

$0000$H

$1009$H

$9000$H

Which instruction is to be used to perform BCD addition? Select appropriate instruction.

MOV AL$,35$H

MOV BL$,36$H

$???$

DAA

ADD AX$,$ BX

ADD AL$,$ BL

ADD BX$,$ AX

ADD BL$,$ AL

Which assembler directive in assembly language is used for defining a constant value?

DB

ORG

EQU

DW