CS609-Midterm
1 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
2 / 50
___________ is used to identify cause of interrupt.
3 / 50
Hardware Interrupts are __________.
4 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
5 / 50
Only ________ ports are important from programming point of view.
6 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
7 / 50
The interval timer can operate in _______ modes.
8 / 50
PPI stands for
9 / 50
The keyboard makes use of interrupt number _______ for its input operations.
10 / 50
DSR stands for __________ .
11 / 50
In ____________each byte is needed to be encapsulated in start and end.
12 / 50
The following command “outportb (0x61,inportb(0x61) | 3);” will ________ .
13 / 50
Int ________ is used to control the printer via the BIOS.
14 / 50
REGS is a Union
15 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
16 / 50
Communication between keyboard and keyboard controller is __________.
17 / 50
By cascading two DMAs ____ bits can be transferred.
18 / 50
______ is Disk interrupt.
19 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
20 / 50
DCE is _____________
21 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
22 / 50
DTE is ____________.
23 / 50
To distinguish 486 with Pentium CPUID Test is used.
24 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
25 / 50
26 / 50
PPI stands for _____________.
27 / 50
In self test mode the output of the UART is routed to its input
28 / 50
Counter register can be used to divide clock signal.
29 / 50
The ____________ function simply enables the self test facility within the modem control register
30 / 50
Int 14H __________ can be used to receive a byte.
31 / 50
There are two type of communication synchronous and Anti Synchronous
32 / 50
PPI is used to perform parallel communication
33 / 50
Control information in files is maintained using
34 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
35 / 50
BIOS support _____________UARTS as COM ports.
36 / 50
Standard PC operates in two modes in terms of memory which are
37 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
38 / 50
There are two main types of interrupts namely _________________.
39 / 50
A software interrupt does not require EOI (End of interrupt).
40 / 50
In self test mode the output of the UART is routed to its input.
41 / 50
There are two main types of interrupts, namely
42 / 50
The ______ service # is not used in any interrupt.
43 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
44 / 50
Keyboard uses port ____ as status port.
45 / 50
____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.
46 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
47 / 50
____ No. of bytes are used to store the character in the keyboard buffer.
48 / 50
__________is used to control the printer via the BIOS
49 / 50
The BIOS interrupt ________ can be used to configure RTC.
50 / 50
The service number is usually placed in the ________ register.
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