1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sergejj [24]
3 years ago
15

The memory unit of a computer has 256k words of 32 bits each. The computer has an instruction format with 4 fields: an opcode fi

eld; a mode field to specify 1 of 7 addressing modes; a register address field to specify 1 0f 60 registers; and a memory address field. Assume an instruction is 32 bits long. Answer the following:
A: How large must the mode field be?

B: How large must the register field be?

C: How large must the address field be?

D: How large is the opcode field?
Computers and Technology
1 answer:
aalyn [17]3 years ago
8 0

Answer:

A. 3 bits required

B. 6 bits are required

c. 8 bits are required

d. 15 bits are required

Explanation:

A. In the address mode selector, we need to specify 1 out of 7 addressing modes. Therefore, there must be 3 bits (2³ = 8)

B. There are 60 address registers. Therefore the bits to represent 60 numbers are 6 bits. (2^6 = 64)

C. As indicated, the memory bit word required is 8 bits.

D. Total Bits = Opcode + Address mode + Register Add + Memory ADD

32 bits = Opcode+ 3 bits + 6 bits + 8 bits

Opcode =  32 bits - 17 bits = 15 bits.

Therefore 15 bits are required for Opcode field.

You might be interested in
Describe the function of the user account section of the control panel
cluponka [151]
From Google:

"User Account Control<span> or </span>UAC<span> for short is a security feature of Windows which helps prevent unauthorized changes to the operating system. These changes can be initiated by applications, users, viruses or other forms of malware."</span>
6 0
3 years ago
Janelle went to update the last name for one of her group contacts. She double-clicked on the contact, changed the last name, an
Ivanshal [37]
Janelle should have clicked Save & Close to close the contact.
5 0
3 years ago
Read 2 more answers
Uses of prototype and who made the prototype<br>​
myrzilka [38]

Answer:

A prototype is an early sample, model, or release of a product built to test a concept or process. It is a term used in a variety of contexts, including semantics, design, electronics, and software programming. A prototype is generally used to evaluate a new design to enhance precision by system analysts and users.

Explanation: The place that made prototype was Radical Entertainment.

Hoped this helped.

3 0
3 years ago
How much does 1 American tank cost on gas for a regular mission? Depending on your answer, I will give you the right amount of p
dem82 [27]
Most of the cars or other vehicles in the United States regularly have tanks that can hold up to 12 gallons worth of gas. The price of gas in not consistent. Sometimes prices are high and sometimes prices are low. Just like to day the price of a gallon is worth $2.2. But in an average, gas costs $3.8 per gallons. Therefore, on a regular basis a standard American which can hold 12 gallons costs $46.2.
5 0
3 years ago
The ________ of the operating system enables users to communicate with the computer system. Select one: A. user interface B. mod
Mumz [18]
The user interface of the operating system
8 0
3 years ago
Other questions:
  • Which tool encrypts entire drives, rendering them unusable unless one possesses the correct key to unlock the drive?
    8·1 answer
  • List and describe three options in the autocad object snap toolbar
    8·1 answer
  • What is runtime error in Python? Provide an example
    14·1 answer
  • A computer consists of both software and hardware. a)Define the term software​
    5·1 answer
  • Cryptography has requirements include:
    8·1 answer
  • Conclusion for primary memory
    15·1 answer
  • I need help please !!!!
    12·1 answer
  • PLEASE HURRY!!!!<br> Look at the image below
    8·1 answer
  • Which of the following makes Super Mario Run unique?
    6·1 answer
  • Introduce yourself by following the rule
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!