CS609-Midterm
1 / 50
The keyboard input character scan code is received at ___ port.
2 / 50
Hardware Interrupts are __________.
3 / 50
Interrupt _____ is empty; we can use its vector as a flag.
4 / 50
By cascading two DMAs ____ bits can be transferred.
5 / 50
Keyboard uses port ____ as status port.
6 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
7 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
8 / 50
------------ is used to set time from RTC
9 / 50
Int 14H____________ can be used to send a byte
10 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
11 / 50
NMI Stand for
12 / 50
Only ________ ports are important from programming point of view.
13 / 50
In self test mode the output of the UART is routed to its input
14 / 50
Counter register can be used to divide clock signal.
15 / 50
File system used in CD’s is_______ file system
16 / 50
DTE is ____________.
17 / 50
Int 14H __________ can be used to receive a byte.
18 / 50
______ is LED control byte.
19 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
20 / 50
_______ is LED control byte.
21 / 50
Display device (Monitor) performs _________ I/O.
22 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
23 / 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);
24 / 50
_____ bit is cleared to indicate the low nibble is being sent.
25 / 50
Interrupt ______ is used to get or set the time.
26 / 50
If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.
27 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
28 / 50
Command register is an _____ bit register
29 / 50
DSR stands for __________ .
30 / 50
Standard PC operates in two modes in terms of memory which are
31 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
32 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
33 / 50
The keyboard makes use of interrupt number _______ for its input operations.
34 / 50
------------ is used to read time from RTC
35 / 50
BIOS support _____________UARTS as COM ports.
36 / 50
DCE is _____________
37 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
38 / 50
Interrupt 9 usually reads the _________ from keyboard.
39 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
40 / 50
PPI is used to perform parallel communication
41 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
42 / 50
The Function of I/O controller is to provide ____________.
43 / 50
The output on the monitor is controlled by a controller called __________within the PC.
44 / 50
45 / 50
The BIOS interrupt ________ can be used to configure RTC.
46 / 50
There are __________ kinds of serial communication.
47 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
48 / 50
In ____________each byte is needed to be encapsulated in start and end.
49 / 50
DCE stands for __________.
50 / 50
Keyboard Status Byte is located at the address
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