CS609-Midterm
1 / 50
The ______ service # is not used in any interrupt.
2 / 50
Int ________ is used to control the printer via the BIOS.
3 / 50
_________ is used to identify the cause of interrupt.
4 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
5 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
6 / 50
------------ is used to read time from RTC
7 / 50
A software interrupt does not require EOI (End of interrupt).
8 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
9 / 50
____ No. of bytes are used to store the character in the keyboard buffer.
10 / 50
The output on the monitor is controlled by a controller called __________within the PC.
11 / 50
The interval timer can operate in ____modes.
12 / 50
To store each character in keyboard buffer ____ bytes are required.
13 / 50
LPTs can be swapped.
14 / 50
File can be______ viewed as collection of clusters or blocks.
15 / 50
Display device (Monitor) performs _________ I/O.
16 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
17 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
18 / 50
By cascading two DMAs ____ bits can be transferred.
19 / 50
In ____________each byte is needed to be encapsulated in start and end.
20 / 50
The BIOS interrupt ________ can be used to configure RTC.
21 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
22 / 50
Command register is an _____ bit register
23 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
24 / 50
Which port is known as Data Port______
25 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
26 / 50
BPB stands for _________.
27 / 50
Control information in files is maintained using
28 / 50
DTE is ____________.
29 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
30 / 50
_______ is LED control byte.
31 / 50
DCE stands for __________.
32 / 50
There are __________ kinds of serial communication.
33 / 50
Interrupt 9 usually reads the _________ from keyboard.
34 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
35 / 50
36 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
37 / 50
Hardware Interrupts are __________.
38 / 50
Which of the following are types of ISR __________.
39 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
40 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
41 / 50
PPI is used to perform parallel communication
42 / 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);
43 / 50
DSR stands for __________ .
44 / 50
NMI Stand for
45 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
46 / 50
The keyboard makes use of interrupt number _______ for its input operations.
47 / 50
There are two type of communication synchronous and Anti Synchronous
48 / 50
There are two main types of interrupts, namely
49 / 50
At IRQ 7 Interrupt # ___ is used.
50 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
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