This set of Computer Organization and Architecture Multiple Choice Questions & Answers (MCQs) focuses on “Motorola 680X0 Processor Architecture – 1”.
1. _____ register is designated to point to the 68000 processor stack.
a) A7 register
b) B2 register
c) There is no such designation
d) Any general purpose register is selected at random
View Answer
Explanation: The processor stack is the place used to store the ongoing and upcoming process information
2. The word length in the 68000 computer is _______
a) 32 bit
b) 64 bit
c) 16 bit
d) 8 bit
View Answer
Explanation: The length of an instruction that can be read or accessed at a time is referred to as word length.
3. Is 68000 computer Byte addressable?
a) True
b) False
View Answer
Explanation: The ability of a system to access the entire data of a process by reading consecutive bytes is called as Byte addressability
4. The register in 68000 can contain up to _____ bits.
a) 24
b) 32
c) 16
d) 64
View Answer
Explanation: None.
5. The 68000 has a max of how many data registers?
a) 16
b) 20
c) 10
d) 8
View Answer
Explanation: The data registers are solely used for the purpose of storing data items of the process.
6. When an operand is stored in a register it is _______
a) Stored in the lower order bits of the register
b) Stored in the higher order bits of the register
c) Stored in any of the bits at random
d) None of the mentioned
View Answer
Explanation: The data always gets stored from the lower order to the higher order bits, except in the case of Little Endian architecture.
7. The status register of the 68000 has ____ condition codes.
a) 7
b) 4
c) 5
d) 8
View Answer
Explanation: The register which is used to basically store the condition flags is called as a status register.
8. The 68000 uses _____ address assignment.
a) Big Endian
b) Little Endian
c) X-Little Endian
d) X-Big Endian
View Answer
Explanation: The way the data gets stored in a memory is called an address assignment.
9. The addresses generated by the 68000 is _____ bit.
a) 32
b) 16
c) 24
d) 42
View Answer
Explanation: The size of the address is directly related to the address space of the system.
10. Instructions which can handle any type of addressing mode are said to be ___________
a) Omniscient
b) Orthogonal
c) Versatile
d) None of the mentioned
View Answer
Explanation: These instructions do not require the mentioning of any one type of addressing mode.
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