CS609-Midterm
1 / 50
__________is used to control the printer via the BIOS
2 / 50
Standard PC can have _____ PPI.
3 / 50
The ____________ function simply enables the self test facility within the modem control register
4 / 50
Each paragraph in keep function is ____ bytes in size.
5 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
6 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
7 / 50
Maximum number of interrupts in a standard PC is
8 / 50
_________ is used to identify the cause of interrupt.
9 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
10 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
11 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
12 / 50
If keyboard buffer is empty the head and tail points at the same location.
13 / 50
The keyboard input character scan code is received at ___ port.
14 / 50
Which of the following are types of ISR __________.
15 / 50
The Function of I/O controller is to provide ____________.
16 / 50
Interrupt 9 usually reads the _________ from keyboard.
17 / 50
Interrupt service number is usually placed in ____________ register.
18 / 50
Standard PC operates in two modes in terms of memory which are
19 / 50
The keyboard makes use of interrupt number _______ for its input operations.
20 / 50
_____ bit is cleared to indicate the low nibble is being sent.
21 / 50
LPTs can be swapped.
22 / 50
___________ is used to identify cause of interrupt.
23 / 50
Only ________ ports are important from programming point of view.
24 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
25 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
26 / 50
The BIOS interrupt ________ can be used to configure RTC.
27 / 50
Counter register can be used to divide clock signal.
28 / 50
Which port is known as Data Port______
29 / 50
PPI stands for
30 / 50
On the execution of IRET instruction, number of bytes popped from stack is
31 / 50
An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.
32 / 50
DCE stands for __________.
33 / 50
NMI Stand for
34 / 50
DTE is ____________.
35 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
36 / 50
Command register is an _____ bit register
37 / 50
DCE is _____________
38 / 50
DSR stands for __________ .
39 / 50
Tail of keyboard should get to get the start of buffer.
40 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
41 / 50
To store each character in keyboard buffer ____ bytes are required.
42 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
43 / 50
In ____________each byte is needed to be encapsulated in start and end.
44 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
45 / 50
46 / 50
The interval timer can operate in ____modes.
47 / 50
------------ is used to read time from RTC
48 / 50
49 / 50
The service _________ is called the keyboard hook service.
50 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
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