CS609-Midterm
1 / 50
The interval timer can operate in ____modes.
2 / 50
In self test mode the output of the UART is routed to its input.
3 / 50
Maximum number of interrupts in a standard PC is
4 / 50
BPB stands for _________.
5 / 50
Display device (Monitor) performs _________ I/O.
6 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
7 / 50
Software based flow control make use of -------- control characters
8 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
9 / 50
------------ is used to set time from RTC
10 / 50
By cascading two DMAs ____ bits can be transferred.
11 / 50
File system used in CD’s is_______ file system
12 / 50
The output on the monitor is controlled by a controller called __________within the PC.
13 / 50
__________is used to control the printer via the BIOS
14 / 50
______ is Disk interrupt.
15 / 50
The service number is usually placed in the ________ register.
16 / 50
The service _________ is called the keyboard hook service.
17 / 50
______ is used to set time.
18 / 50
LPTs can be swapped.
19 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
20 / 50
Only ________ ports are important from programming point of view.
21 / 50
22 / 50
Timer interrupt is a _________.
23 / 50
_____ bit is cleared to indicate the low nibble is being sent.
24 / 50
Keyboard Status Byte is located at the address
25 / 50
Operating system name contains ____ bytes in boot block.
26 / 50
PPI stands for _____________.
27 / 50
Counter register can be used to divide clock signal.
28 / 50
Interrupt ______ is used to get or set the time.
29 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
30 / 50
UART stands for_______
31 / 50
A single interrupt controller can arbitrate among ____ different devices.
32 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
33 / 50
Int 14H____________ can be used to send a byte
34 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
35 / 50
Which of the following are types of ISR __________.
36 / 50
The ______ service # is not used in any interrupt.
37 / 50
At IRQ 7 Interrupt # ___ is used.
38 / 50
BIOS DO NOT support ______.
39 / 50
Register can be used to divide frequency is _________
40 / 50
------------ is used to read date from RTC
41 / 50
If keyboard buffer is empty the head and tail points at the same location.
42 / 50
DSR stands for __________ .
43 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
44 / 50
45 / 50
Following is not a method of I/O
46 / 50
------------ is used to read time from RTC
47 / 50
Standard PC operates in two modes in terms of memory which are
48 / 50
DCE stands for __________.
49 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
50 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
Your score is
The average score is 0%
Restart quiz
