CS609-Midterm
1 / 50
At IRQ 7 Interrupt # ___ is used.
2 / 50
Interrupt ______ is used to get or set the time.
3 / 50
_____ bit is cleared to indicate the low nibble is being sent.
4 / 50
UART stands for_______
5 / 50
Following is not a method of I/O
6 / 50
File can be______ viewed as collection of clusters or blocks.
7 / 50
Interrupt 9 usually reads the _________ from keyboard.
8 / 50
__________is used to control the printer via the BIOS
9 / 50
The keyboard makes use of interrupt number _______ for its input operations.
10 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
11 / 50
Display device (Monitor) performs _________ I/O.
12 / 50
Hardware Interrupts are __________.
13 / 50
14 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
15 / 50
BIOS support _____________UARTS as COM ports.
16 / 50
In self test mode the output of the UART is routed to its input.
17 / 50
Interrupt service number is usually placed in ____________ register.
18 / 50
The BIOS interrupt ________ can be used to configure RTC.
19 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
20 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
21 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
22 / 50
------------ is used to set time from RTC
23 / 50
________means typematic rate will be sent in next byte.
24 / 50
In ____________each byte is needed to be encapsulated in start and end.
25 / 50
The interval timer can operate in ____modes.
26 / 50
Only ________ ports are important from programming point of view.
27 / 50
______ is used to set time.
28 / 50
To store each character in keyboard buffer ____ bytes are required.
29 / 50
DSR stands for __________ .
30 / 50
31 / 50
A single interrupt controller can arbitrate among ____ different devices.
32 / 50
33 / 50
Maximum number of interrupts in a standard PC is
34 / 50
Timer interrupt is a _________.
35 / 50
The interval timer can operate in _______ modes.
36 / 50
Each paragraph in keep function is ____ bytes in size.
37 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
38 / 50
There are two type of communication synchronous and Anti Synchronous
39 / 50
40 / 50
File system used in CD’s is_______ file system
41 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
42 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
43 / 50
Counter register can be used to divide clock signal.
44 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
45 / 50
46 / 50
PPI is used to perform parallel communication
47 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
48 / 50
In keyboard status byte bit no. 2 and 3 are used for ctrl and alt keys respectively. which of the following condition is used to check that Ctrl + Alt keys are pressed. Where: unsigned char far * scr = (unsigned char far *)(0x00400017);
49 / 50
50 / 50
The Function of I/O controller is to provide ____________.
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