CS609-Midterm
1 / 50
In ____________each byte is needed to be encapsulated in start and end.
2 / 50
DSR stands for __________ .
3 / 50
_________ is used to identify the cause of interrupt.
4 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
5 / 50
Tail of keyboard should get to get the start of buffer.
6 / 50
7 / 50
File system used in CD’s is_______ file system
8 / 50
The Function of I/O controller is to provide ____________.
9 / 50
10 / 50
______ is used to set time.
11 / 50
The interval timer can operate in ____modes.
12 / 50
Timer interrupt is a _________.
13 / 50
______ is LED control byte.
14 / 50
The keyboard makes use of interrupt number _______ for its input operations.
15 / 50
BIOS support _____________UARTS as COM ports.
16 / 50
PPI stands for _____________.
17 / 50
Only ________ ports are important from programming point of view.
18 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
19 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
20 / 50
Interrupt 9 usually reads the _________ from keyboard.
21 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
22 / 50
_____ bit is cleared to indicate the low nibble is being sent.
23 / 50
Keyboard uses port ____ as status port.
24 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
25 / 50
Hardware Interrupts are __________.
26 / 50
DCE stands for __________.
27 / 50
The ____________ function simply enables the self test facility within the modem control register
28 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
29 / 50
Int 14H____________ can be used to send a byte
30 / 50
Following is not a method of I/O
31 / 50
In self test mode the output of the UART is routed to its input.
32 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
33 / 50
Which of the following are types of ISR __________.
34 / 50
The keyboard input character scan code is received at ___ port.
35 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
36 / 50
There are __________ kinds of serial communication.
37 / 50
To store each character in keyboard buffer ____ bytes are required.
38 / 50
------------ is used to set time from RTC
39 / 50
The following command “outportb (0x61,inportb(0x61) | 3);” will ________ .
40 / 50
Interrupt _____ is empty; we can use its vector as a flag.
41 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
42 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
43 / 50
________means typematic rate will be sent in next byte.
44 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
45 / 50
_______ is LED control byte.
46 / 50
BPB stands for _________.
47 / 50
PPI is used to perform parallel communication
48 / 50
49 / 50
Operating system name contains ____ bytes in boot block.
50 / 50
If CPUID instruction is not present then the processor can be a
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