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WorksheetsMicroprocessor
Total questions: 20
Worksheet time: 10mins
The 80386DX is a processor that supports
8-bit data operand
16-bit data operand
32-bit data operand
all of above
80386DX is available in a grid array package of
8 pin
128 pin
132 pin
142 pin
The 80386DX has an address bus of
8 address lines
32 address lines
16 address lines
64 address lines
The operating frequency of 80386DX is
12 MHz and 20 MHz
20 MHz and 33 MHz
32 MHz and 12 MHz
The first microprocessor was introduced by
Motorola
Nexas
Fairchild
Intel
The 80386 accesses of physical memory.
4 GB
64 TB
1 GB
4 TB
Which bus is unidirectional in 80386
Address
Data
Both A & B
_____ bit is specifically for string instructions
Sign flag (SF)
Interrupt flag (IF)
Direction flag(DF)
Trap flag ( TF)
AX, BX, CX and DX are called as
General purpose registers
Special registers
Index registers
Scaled registers
which register is mainly used during instructions like PUSH, POP, CALL, RETURN etc
BX
AX
SP
BP
The 80386 has following features
multitasking
memory management
Pipelining
all of these
The 80386 can operate in different ___ modes
2
3
4
5
Prefetched bytes are stored on the basis.
first in,first out ( fifo)
LIFO
FILO
None of these
The address bus of 80386 is ___ bit
16
32
64
20
The unit that provides a four level protection mechanism, for system’s code and data against application program is
central processing unit
segmentation unit
bus interface unit
none of the mentioned
The following statement of ALP is an example of
MOV EBX, [EDX*4] [ECX].
base scaled indexed mode
scaled indexed mode
indexed mode
based scaled indexed mode with displacement mode
Which of the units is not a part of internal architecture of 80386?
central processing unit
memory management unit
bus interface unit
none of the mentioned
The unit that increases the speed of all shift and rotate operations is
memory management unit
execution unit
instruction unit
barrel shifter
ALU of 80386 is ____ bits
16
8
4
32
How many segment register are there
2
4
5
6
