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Welcome to the 80386 and 80486 Microprocessor MCQs Page

Dive deep into the fascinating world of 80386 and 80486 Microprocessor with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of 80386 and 80486 Microprocessor, a crucial aspect of Microprocessor. In this section, you will encounter a diverse range of MCQs that cover various aspects of 80386 and 80486 Microprocessor, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Microprocessor.

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80386 and 80486 Microprocessor MCQs | Page 13 of 13

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Q121.
The datatype that the 80486 does not support is

a.

Signed and unsigned

b.

ASCII

c.

Floating point

d.

All are supported by 80486

Discuss
Answer: (d).All are supported by 80486
Q122.
In Little Endian data format, the data is stored as

a.

MSB is stored at lower memory address and LSB at higher memory address

b.

LSB is stored at lower memory address and MSB at higher memory address

c.

MSB is stored at general purpose registers

d.

LSB is stored at general purpose registers

Discuss
Answer: (b).LSB is stored at lower memory address and MSB at higher memory address
Q123.
The on-chip cache is used for storing

a.

addresses of data

b.

opcodes and data

c.

data and their addresses

d.

opcodes and their addresses

Discuss
Answer: (b).opcodes and data
Q124.
The on-chip cache is controlled by

a.

Cache disable(CD)

b.

No write through(NW)

c.

Cache disable and No write through

d.

None of the mentioned

Discuss
Answer: (c).Cache disable and No write through
Q125.
The on-chip cache can be flushed using external hardware using

a.

FLUSH pin

b.

TERMINATE pin

c.

FLOW pin

d.

Pin FLUSH# or using software

Discuss
Answer: (d).Pin FLUSH# or using software
Page 13 of 13

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