CS609-Midterm
1 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
2 / 50
File can be______ viewed as collection of clusters or blocks.
3 / 50
If CPUID instruction is not present then the processor can be a
4 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
5 / 50
BPB stands for _________.
6 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
7 / 50
________means typematic rate will be sent in next byte.
8 / 50
If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.
9 / 50
Display device (Monitor) performs _________ I/O.
10 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
11 / 50
DMA stands for_________
12 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
13 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
14 / 50
The Function of I/O controller is to provide ____________.
15 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
16 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
17 / 50
_______ is LED control byte.
18 / 50
Each paragraph in keep function is ____ bytes in size.
19 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
20 / 50
Hardware Interrupts are __________.
21 / 50
_____ bit is cleared to indicate the low nibble is being sent.
22 / 50
------------ is used to set time from RTC
23 / 50
Int ________ is used to control the printer via the BIOS.
24 / 50
____ No. of bytes are used to store the character in the keyboard buffer.
25 / 50
Only ________ ports are important from programming point of view.
26 / 50
Interrupt service number is usually placed in ____________ register.
27 / 50
Maximum number of interrupts in a standard PC is
28 / 50
BIOS support _____________UARTS as COM ports.
29 / 50
Control information in files is maintained using
30 / 50
The keyboard makes use of interrupt number _______ for its input operations.
31 / 50
32 / 50
Counter register can be used to divide clock signal.
33 / 50
34 / 50
DSR stands for __________ .
35 / 50
Standard PC operates in two modes in terms of memory which are
36 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
37 / 50
Timer interrupt is a _________.
38 / 50
39 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
40 / 50
Which port is known as Data Port______
41 / 50
To store each character in keyboard buffer ____ bytes are required.
42 / 50
The ____________ function simply enables the self test facility within the modem control register
43 / 50
DCE stands for __________.
44 / 50
The keyboard input character scan code is received at ___ port.
45 / 50
REGS is a Union
46 / 50
__________is used to control the printer via the BIOS
47 / 50
Tail of keyboard should get to get the start of buffer.
48 / 50
In self test mode the output of the UART is routed to its input
49 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
50 / 50
Int 14H __________ can be used to receive a byte.
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