Question: A system is based on an 8-bit microprocessor and has two I/O devices. The I/O controllers for this system use separate control and status registers.

A system is based on an 8-bit microprocessor and has two I/O devices. The I/O controllers for this system use separate control and status registers. Both devices handle data on a 1-byte-at-a-time basis. The first device has two status lines and three control lines. The second device has three status lines and four control lines.
a. How many 8-bit I/O control module registers do we need for status reading and control of each device?
b. What is the total number of needed control module registers given that the first device is an output-only device?
c. How many distinct addresses are needed to control the two devices?

Step by Step Solution

★★★★★

3.39 Rating (171 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a Each IO device requires one output from the point of view of the proc... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

896-C-S-S-A-D (2439).docx

120 KBs Word File

Students Have Also Explored These Related Systems Analysis And Design Questions!

Consider a 32-bit microprocessor whose bus cycle is the same duration as that of a 16-bit microprocessor. Assume that, on average, 20% of the operands and instructions are 32 bits long, 40% are 16...

Consider a hypothetical 32-bit microprocessor having 32-bit instructions composed of two fields: the first byte contains the opcode and the remainder the immediate operand or an operand address. a....

Consider a 32-bit microprocessor, with a 16-bit external data bus, driven by an 8-MHz input clock. Assume that this microprocessor has a bus cycle whose minimum duration equals four input clock...

A system is based on an 8 - bit microprocessor and has two I / O devices. The I / O controllers for this system use separate - control and status registers. Both devices handle data on a 2 - byte at...

CSC601 Computer Organization and Architecture Assignment 1 (10%) Due Date: 11 th March 2023 Submit to: timothy.kale@sinu.edu.sb Answer the following questions below; Lecture 4 Readings, Chapter 5...

Java protests instead of sending messages as message.Characterize, in a programming language documentation of your choice, a recursive drop parser that will foster the hypothetical sentence structure...

Mr. Brian Krzanich was preparing for his new role as Intel's CEO that would start in May 2013.Impressed with your growing knowledge of strategic management, Mr. Krzanich had asked you to assist him...

Analysis of Diversification Strategy. First, evaluate Intel's strategy of diversifying into the software industry by explaining how incorporating both software products and hardware platforms (i.e.,...

1. What performance problems is the captain trying to correct? 2. Use the MARS model of individual behavior and performance to diagnose the possible causes of the unacceptable behavior. 3. Has the...

A theory stating that people evaluate a leader's effectiveness in terms of how well that person fits preconceived beliefs about the features and behaviors of effective leaders (leadership prototypes,...

Which of the following are true regarding the investment policy statement? ( 1 ) Outlines the general rules for the adviser. ( 2 ) Lists the client's objectives and constraints. ( 3 ) Assists with...

How do models of endogenous growth differ from those that assume growth is exogenous?

Provide the following parameter values for each of the network classes A, B, and C. Be sure to consider any special or reserved addresses in your calculations. a. Number of bits in network portion of...

Using your IP address and your mask, what is your network address? This is determined by converting the IP address and the mask to binary and then proceeding with a bitwise logical AND operation. For...

Why does a differentiated services (DS) domain consist of a set of contiguous routers? How are the boundary node routers different from the interior node routers in a DS domain?

You've invested $2,800 in Stock Arbuckle and $3,800 invested in Stock Roscoe. The expected returns on these stocks are 8 percent and 11 percent, respectively. Calculate the expected return on the...

The balance sheet and income statement shown below are for Sneaker Inc. Note that the firm has no amortization charges, it does not lease any assets, none of its debt must be retired during the next...

Present value ( in $ ) of an annity due \ table [ [ \ table [ [ Annuity ] , [ Payment ] ] , \ table [ [ Payment ] , [ Frequency ] ] , \ table [ [ Time ] , [ Period ( years ) ] ] , \ table [ [ Nominal...