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Recent questions tagged microprocessor-8085
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GATE ECE 2020 | Question: 19
In an $8085$ microprocessor, the number of address lines required to access a $16$ K byte memory bank is ____________ .
In an $8085$ microprocessor, the number of address lines required to access a $16$ K byte memory bank is ____________ .
go_editor
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135
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go_editor
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Feb 13, 2020
Digital Circuits
gate2020-ec
numerical-answers
digital-circuits
microprocessor-8085
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0
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0
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2
GATE ECE 2016 Set 3 | Question: 16
In an $8085$ microprocessor, the contents of the accumulator and the carry flag are $A7$ (in hex) and $0$, respectively. If the instruction $RLC$ is executed, then the contents of the accumulator (in hex) and the carry flag, respectively, will be $4E$ and $0$ $4E$ and $1$ $4F$ and $0$ $4F$ and $1$
In an $8085$ microprocessor, the contents of the accumulator and the carry flag are $A7$ (in hex) and $0$, respectively. If the instruction $RLC$ is executed, then the co...
Milicevic3306
16.0k
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107
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Milicevic3306
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Mar 27, 2018
Digital Circuits
gate2016-ec-3
digital-circuits
microprocessor-8085
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0
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0
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3
GATE ECE 2016 Set 1 | Question: 44
In an $8085$ system, a PUSH operation requires more clock cycles than a POP operation. Which one of the following options is the correct reason for this? For POP, the data transceivers remain in the same direction as for instruction fetch ... in the stack pointer. Order of registers has to be interchanged for a PUSH operation, whereas POP uses their natural order.
In an $8085$ system, a PUSH operation requires more clock cycles than a POP operation. Which one of the following options is the correct reason for this?For POP, the data...
Milicevic3306
16.0k
points
87
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Milicevic3306
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Mar 27, 2018
Digital Circuits
gate2016-ec-1
digital-circuits
microprocessor-8085
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–
0
votes
0
answers
4
GATE ECE 2015 Set 3 | Question: 16
Which one of the following $8085$ microprocessor programs correctly calculates the product of two $8$-bit numbers stored in registers $B$ and $C?$ ...
Which one of the following $8085$ microprocessor programs correctly calculates the product of two $8$-bit numbers stored in registers $B$ and $C?$$\begin{array}{ll} {} & ...
Milicevic3306
16.0k
points
102
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Milicevic3306
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Mar 27, 2018
Digital Circuits
gate2015-ec-3
digital-circuits
microprocessor-8085
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–
0
votes
0
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5
GATE ECE 2015 Set 2 | Question: 15
In an $8085$ microprocessor, which one of the following instructions changes the content of the accumulator? MOV B, M PCHL RNZ SBI BEH
In an $8085$ microprocessor, which one of the following instructions changes the content of the accumulator?MOV B, MPCHLRNZSBI BEH
Milicevic3306
16.0k
points
116
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Milicevic3306
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Mar 27, 2018
Digital Circuits
gate2015-ec-2
digital-circuits
microprocessor-8085
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–
0
votes
0
answers
6
GATE ECE 2015 Set 1 | Question: 14
In an 8085 microprocessor, the shift registers which store the result of an addition and the overflow bit are, respectively B and F A and F H and F A and C
In an 8085 microprocessor, the shift registers which store the result of an addition and the overflow bit are, respectivelyB and FA and FH and FA and C
Milicevic3306
16.0k
points
90
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Milicevic3306
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Mar 27, 2018
Digital Circuits
gate2015-ec-1
digital-circuits
microprocessor-8085
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–
0
votes
0
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7
GATE ECE 2014 Set 4 | Question: 42
An $8085$ microprocessor executes $ STA 1234H $ with starting address location $1FFEH$ (STA copies the contents of the Accumulator to the $16$ ... $1FH, FEH, 1FH, FFH, 12H$ $1FH, 1FH, 12H, 12H$ $1FH, 1FH, 12H, 20H, 12H$
An $8085$ microprocessor executes $“STA 1234H”$ with starting address location $1FFEH$ (STA copies the contents of the Accumulator to the $16$- bit address location)....
Milicevic3306
16.0k
points
70
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Milicevic3306
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Mar 26, 2018
Digital Circuits
gate2014-ec-4
digital-circuits
microprocessor-8085
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–
0
votes
0
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8
GATE ECE 2014 Set 2 | Question: 42
For the $8085$ microprocessor, the interfacing circuit to input $8$-bit digital data $( DI_{0}-DI_{7})$ from an external device is shown in the figure. The instruction for correct data transfer is $\text{MVI A, F8H}$ $\text{IN F8H}$ $\text{OUT F8H}$ $\text{LDA F8F8H}$
For the $8085$ microprocessor, the interfacing circuit to input $8$-bit digital data $( DI_{0}-DI_{7})$ from an external device is shown in the figure. The instruction fo...
Milicevic3306
16.0k
points
158
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Milicevic3306
asked
Mar 26, 2018
Digital Circuits
gate2014-ec-2
digital-circuits
combinational-circuits
microprocessor-8085
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–
0
votes
0
answers
9
GATE ECE 2013 | Question: 12
For $8085$ microprocessor, the following program is executed. $\begin{array}{ll} & MVI\: A, 05H; \\ & MVI\: B, 05H; \\ PTR: & ADD \:B; \\ & DCR \:B; \\ & JNZ\: PTR; \\ & ADI\: 03H; \\ & HLT; \end{array}$ At the end of program, accumulator contains $17H$ $20H $ $23H$ $ 05H$
For $8085$ microprocessor, the following program is executed.$\begin{array}{ll} & MVI\: A, 05H; \\ & MVI\: B, 05H; \\ PTR: & ADD \:B; \\ & DCR \:B; \\ & JNZ\: PTR; \\ & ...
Milicevic3306
16.0k
points
95
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Milicevic3306
asked
Mar 25, 2018
Digital Circuits
gate2013-ec
digital-circuits
microprocessor-8085
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–
0
votes
0
answers
10
GATE ECE 2017 Set 1 | Question: 45
The following FIVE instructions were executed on an $8085$ microprocessor. MVI A, $33$H MVI B, $78$H ADD B CMA ANI $32$H The Accumulator value immediately after the execution of the fifth instruction is $00H$ $10H$ $11H$ $32H$
The following FIVE instructions were executed on an $8085$ microprocessor.MVI A, $33$HMVI B, $78$HADD BCMAANI $32$HThe Accumulator value immediately after the execution o...
admin
46.4k
points
187
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admin
asked
Nov 17, 2017
Digital Circuits
gate2017-ec-1
digital-circuits
microprocessor-8085
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–
0
votes
0
answers
11
GATE ECE 2017 Set 1 | Question: 16
The clock frequency of an $8085$ microprocessor is $5$ MHz . If the time required to execute an instruction is $1.4 \: \mu s$, then the number of T-states needed for executing the instruction is $1$ $6$ $7$ $8$
The clock frequency of an $8085$ microprocessor is $5$ MHz . If the time required to execute an instruction is $1.4 \: \mu s$, then the number of T-states needed for exec...
admin
46.4k
points
303
views
admin
asked
Nov 17, 2017
Digital Circuits
gate2017-ec-1
microprocessor-8085
digital-circuits
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