CS609-Midterm
1 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
2 / 50
A single interrupt controller can arbitrate among ____ different devices.
3 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
4 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
5 / 50
An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.
6 / 50
If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.
7 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
8 / 50
At IRQ 7 Interrupt # ___ is used.
9 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
10 / 50
The keyboard makes use of interrupt number _______ for its input operations.
11 / 50
NMI Stand for
12 / 50
Standard PC can have _____ PPI.
13 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
14 / 50
If keyboard buffer is empty the head and tail points at the same location.
15 / 50
The service _________ is called the keyboard hook service.
16 / 50
Timer interrupt is a _________.
17 / 50
The ____________ function simply enables the self test facility within the modem control register
18 / 50
The service number is usually placed in the ________ register.
19 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
20 / 50
The Function of I/O controller is to provide ____________.
21 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
22 / 50
_____ bit is cleared to indicate the low nibble is being sent.
23 / 50
In self test mode the output of the UART is routed to its input
24 / 50
In self test mode the output of the UART is routed to its input.
25 / 50
26 / 50
To store each character in keyboard buffer ____ bytes are required.
27 / 50
------------ is used to read time from RTC
28 / 50
Control information in files is maintained using
29 / 50
Communication between keyboard and keyboard controller is __________.
30 / 50
DSR stands for __________ .
31 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
32 / 50
_______ is LED control byte.
33 / 50
_________ is used to identify the cause of interrupt.
34 / 50
Following is not a method of I/O
35 / 50
By cascading two DMAs ____ bits can be transferred.
36 / 50
Interrupt _____ is empty; we can use its vector as a flag.
37 / 50
___________ is used to identify cause of interrupt.
38 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
39 / 50
40 / 50
Timer interrupt occurs _______ times every second by means of hardware.
41 / 50
42 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
43 / 50
Only ________ ports are important from programming point of view.
44 / 50
File can be______ viewed as collection of clusters or blocks.
45 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
46 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
47 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
48 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
49 / 50
______ is LED control byte.
50 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
Your score is
The average score is 0%
Restart quiz
