CS609-Midterm
1 / 50
The BIOS interrupt ________ can be used to configure RTC.
2 / 50
________means typematic rate will be sent in next byte.
3 / 50
The output on the monitor is controlled by a controller called __________within the PC.
4 / 50
The keyboard makes use of interrupt number _______ for its input operations.
5 / 50
Only ________ ports are important from programming point of view.
6 / 50
Each paragraph in keep function is ____ bytes in size.
7 / 50
At IRQ 7 Interrupt # ___ is used.
8 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
9 / 50
The ______ service # is not used in any interrupt.
10 / 50
PPI stands for
11 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
12 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
13 / 50
If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.
14 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
15 / 50
An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.
16 / 50
Register can be used to divide frequency is _________
17 / 50
There are two type of communication synchronous and Anti Synchronous
18 / 50
By cascading two DMAs ____ bits can be transferred.
19 / 50
____ No. of bytes are used to store the character in the keyboard buffer.
20 / 50
In self test mode the output of the UART is routed to its input.
21 / 50
BIOS support _____________UARTS as COM ports.
22 / 50
23 / 50
There are two main types of interrupts, namely
24 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
25 / 50
The service number is usually placed in the ________ register.
26 / 50
Display device (Monitor) performs _________ I/O.
27 / 50
Control information in files is maintained using
28 / 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);
29 / 50
Command register is an _____ bit register
30 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
31 / 50
____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.
32 / 50
PPI stands for _____________.
33 / 50
Interrupt ______ is used to get or set the time.
34 / 50
Which of the following are types of ISR __________.
35 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
36 / 50
Counter register can be used to divide clock signal.
37 / 50
There are __________ kinds of serial communication.
38 / 50
File system used in CD’s is_______ file system
39 / 50
Maximum number of interrupts in a standard PC is
40 / 50
_____ bit is cleared to indicate the low nibble is being sent.
41 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
42 / 50
DCE stands for __________.
43 / 50
44 / 50
BIOS DO NOT support ______.
45 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
46 / 50
47 / 50
The keyboard input character scan code is received at ___ port.
48 / 50
Which port is known as Data Port______
49 / 50
Hardware Interrupts are __________.
50 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
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