ASSIGNMENT 5
Textbook Assignment: “Central Processing Units and Buses,” chapter 5—continued, pages 5-13 through 5-
23.
5-1.
The interrupt that occurs with the actual
event that caused the interrupt is (a) what
type and (b) what will be the status of the
condition of the process or program after
the interrupt is processed?
1. (a) Asynchronous
(b) Different conditions will exist
2. (a) Asynchronous
(b) The exact same conditions will
exist
3. (a) Synchronous
(b) Different conditions will exist
4. (a) Synchronous
(b) The exact same conditions will
exist
5-2.
What type of interrupt occurs (a) when
there is an error in a peripheral device and
(b) when 1/0 operations are terminated?
1. (a) External (b) internal
2. (a) External (b) external
3. (a) Internal (b) internal
4. (a) Internal (b) external
5-3.
In a microcomputer, an interrupt from an
internal hard disk can be masked out by the
computer.
1 . T r ue
2. False
5-4.
In microcomputers, which of the following
methods can be used to direct the processor
to the address of the interrupt of a
maskable interrupt?
1. An interrupt code only
2. A ROM lookup table only
3. A ROM/PROM lookup table only
4. An interrupt code and a ROM/PROM
lookup table
IN ANSWERING QUESTIONS 5-5 THROUGH 5-
11, SELECT FROM THE FOLLOWING LIST
THE INTERRUPT CLASS THAT MATCHES
THE CONDITION OR PRIORITY DESCRIBED
IN EACH QUESTION.
5-5.
5-6.
5-7.
5-8.
5-9.
5-10.
5-11.
1. Class I
2. Class II
3. Class III
4. Class IV
An RTC overflow has occurred.
An intercomputer timeout has occurred.
The highest priority interrupt that can occur
in the computer.
A power out of tolerance has occurred.
The computer will execute a power failure
processing routine.
An input chain interrupt has occurred.
An illegal op code has been executed in the
CPU.
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