Question: Computers have had DMA for doing I/O for decades. Did this cause any problems before there were I/O MMUs?

Computers have had DMA for doing I/O for decades. Did this cause any problems before there were I/O MMUs?

Step by Step Solution

★★★★★

3.45 Rating (177 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock

Yes Early DMA hardware used absolute memory addresses If a guest opera... View full answer

blur-text-image
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)

Word file Icon

761-C-S-D-B-O-S (495).docx

120 KBs Word File

Students Have Also Explored These Related Operating System Questions!

Q:

On early computers, every byte of data read or written was handled by the CPU (i.e., there was no DMA). What implications does this have for multiprogramming?

Q:

A computer consists of a CPU and an I/O device D connected to main memory M via a shared bus with a data bus width of one word. The CPU can execute a maximum of 106 instructions per second. An...

Q:

For each of the descriptions below, perform the following tasks: i. Identify the degree and cardinalities of the relationship. ii. Express the relationships in each description graphically with an...

Q:

4 Comparative Programming Languages illustrating your answer by explaining the meaning of the following fragment of code: [self isAwake] whileTrue: [| item | item := self askForCookie. (self...

Q:

IBM-A Fading Giant Rejuvenates Stealitate LBM et similar roller coaster foes Cutinental Air, with the man difference that it was so much igerson years of inchisty domination The common motion is that...

Q:

QUESTION 3 (25 MARKS) a) State the correct term for each given description in the table below. No Description Term i) This type of interrupt request line is reserved only for events such as...

Q:

ORGANIZ/fIION DE\\IELOPMENT 4t XieS&r& L:rlt ttttrc DONALD R.BRO\\MN i',ii+ir+,::':i'i Organlzation Renewal: The Challenge-of Change LEARNING OBJECTIVES Upon completing this chapter, you will be able...

Q:

Have a C compiler which is ANSI conforming in all respects except that it has no facility for the definition, declaration or use of standard C structures. Outline a set of routines written in this...

Q:

State what is meant by a directed graph and a strongly connected component. Illustrate your description by giving an example of such a graph with 8 vertices and 12 edges that has three strongly...

Q:

please focus on these 3 questions and answer them based on the reading screenshots, do not use any outside sources. DO NOT USE ONLINE SOURCES, DO NOT COPY?PASTE FROM ONLINE SOURCES. ANSWER MUST BE...

Q:

What are the differences that exist between the English common law system, on which the legal system of the state of California is based, and the civil law system, on which the legal system of Puerto...

Q:

Why do most countries have some protectionist trade barriers?

Q:

Prescott Incorporated owned 8 0 % of the voting common stock of Hutchins Corporation. During 2 0 2 4 , Hutchins made several sales of inventory to Prescott. The total selling price was $ 1 9 0 , 0 0...

Q:

f sxd 4x4 2 32x3 1 89x2 2 95x 1 29 Produce graphs of f that reveal all the important aspects of the curve. In particular, you should use graphs of f 9 and f 0 to estimate the intervals of increase...

Q:

Augment your cipher.html page so that it can both encode and decode messages. You will need to define a new function named Decode, which decodes the message in the text area using the entered cipher...

Q:

Consider a variation on the code in Figure 15.5, in which the string concatenation inside the while loop is reversed: str = foobar; i = str.search(/[aeiou]/); while (i != -1) {str = str.substring(0,...

Q:

Design and create a Web page named phoney.html that converts alphabetic phone numbers into entirely numeric ones. Your page should allow the user to enter the number (possibly containing letters) in...

Q:

Which is smallest? a . . 0 8 b . . 0 8 c . 0 0 8 d . . 8 0

Q:

KRJ International just reported earnings before taxes of $100,000 and tax expense of $30,000, leaving net income of $70,000. During the year it sold a warehouse with a net book value of $6,640 for...

Q:

(Calculating financial ratios) Use the balance sheet and income statement for the J. P. Robard Mfg. Company to calculate the following ratios: Current ratio (Round to two decimal places.) Times...