Numeric Processor 8087 – 1 MCQ’s

Read Time:1 Minute, 36 Second

This set of Microprocessor Multiple Choice Questions & Answers (MCQs) focuses on “Numeric Processor 8087 – 1″.

1. The unit that receives and decodes the instructions in 8087 is
a) Control unit
b) ALU
c) Numeric extension unit
d) None of the mentioned

2. The control unit functions in
a) establishing communication between CPU and memory
b) coordinating the internal coprocessor execution
c) reads and writes memory operands
d) all of the mentioned

3. The unit that executes all the numeric processor instructions in 8087 is
a) Control unit
b) ALU
c) Numeric extension unit
d) None of the mentioned

4. When the numeric extension unit (NEU) begins its execution, then the signal that is active is
a) BUSY (active high)
b) BUSY (active low)
c) READY (active low)
d) RESET (active high)

5. Invalid operation is the exception generated due to
a) stack overflow
b) stack underflow
c) indeterminate form as result
d) all of the mentioned

6. If the result is infinity, then the exception generated is
a) overflow
b) invalid operation
c) denormalized operand
d) zero divide

7. The register that allows the register programmer to select the required processing options is
a) significant
b) exponent
c) control word register
d) none of the mentioned

8. The exception generated for a too big result to fit in the format is
a) invalid operation
b) overflow
c) denormalized operand
d) result overflow

9. To operate 8087 in maximum mode, the pin MN/MX (active low) is
a) connected to Vcc or power supply
b) connected to ground
c) left unconnected
d) none of the mentioned

10. The instruction that stores a copy of top of the stack into the memory, and pops the top of the stack is
a) FST
b) FSTP
c) FIST
d) FLD

11. If the opcode bit is D=1, then the source and destination operands are
a) incremented
b) decremented
c) cleared
d) interchanged

12. If the result is rounded according to the rounding control bits, then the exception generated is
a) denormalized operand
b) underflow
c) inexact result
d) invalid operation

13. The instruction that multiplies the content of the stack top by 2n is
a) FMUL
b) FPREM
c) FSCAL
d) FCSH

Happy
Happy
0 %
Sad
Sad
0 %
Excited
Excited
0 %
Sleepy
Sleepy
0 %
Angry
Angry
0 %
Surprise
Surprise
0 %

Average Rating

5 Star
0%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Leave a Reply

Your email address will not be published. Required fields are marked *

Previous post Software Aspects of Multimicroprocessor Systems MCQ’s
Next post I/O Processor 8089 MCQ’s