CS609-Midterm
1 / 50
BIOS support _____________UARTS as COM ports.
2 / 50
There are two main types of interrupts namely _________________.
3 / 50
The keyboard input character scan code is received at ___ port.
4 / 50
Operating system name contains ____ bytes in boot block.
5 / 50
Standard PC can have _____ PPI.
6 / 50
Maximum number of interrupts in a standard PC is
7 / 50
NMI Stand for
8 / 50
Only ________ ports are important from programming point of view.
9 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
10 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
11 / 50
UART stands for_______
12 / 50
The interval timer can operate in ____modes.
13 / 50
File system used in CD’s is_______ file system
14 / 50
Which of the following are types of ISR __________.
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In self test mode the output of the UART is routed to its input
16 / 50
In self test mode the output of the UART is routed to its input.
17 / 50
The BIOS interrupt ________ can be used to configure RTC.
18 / 50
A software interrupt does not require EOI (End of interrupt).
19 / 50
____ No. of bytes are used to store the character in the keyboard buffer.
20 / 50
_______ is LED control byte.
21 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
22 / 50
The keyboard makes use of interrupt number _______ for its input operations.
23 / 50
_____ bit is cleared to indicate the low nibble is being sent.
24 / 50
________means typematic rate will be sent in next byte.
25 / 50
In ____________each byte is needed to be encapsulated in start and end.
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REGS is a Union
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28 / 50
Which port is known as Data Port______
29 / 50
A single interrupt controller can arbitrate among ____ different devices.
30 / 50
DCE stands for __________.
31 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
32 / 50
DTE is ___________
33 / 50
Keyboard uses port ____ as status port.
34 / 50
DTE is ____________.
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______ is LED control byte.
36 / 50
______ is used to set time.
37 / 50
Timer interrupt is a _________.
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39 / 50
The service _________ is called the keyboard hook service.
40 / 50
File can be______ viewed as collection of clusters or blocks.
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Interrupt service number is usually placed in ____________ register.
42 / 50
The ______ service # is not used in any interrupt.
43 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
44 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
45 / 50
LPTs can be swapped.
46 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
47 / 50
48 / 50
There are two main types of interrupts, namely
49 / 50
50 / 50
Register can be used to divide frequency is _________
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