CS609-Midterm
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PPI stands for
2 / 50
Standard PC operates in two modes in terms of memory which are
3 / 50
Timer interrupt is a _________.
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Total No. of bytes that can be stored in Keyboard Buffer is____.
5 / 50
Hardware Interrupts are __________.
6 / 50
To store each character in keyboard buffer ____ bytes are required.
7 / 50
_____ bit is cleared to indicate the low nibble is being sent.
8 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
9 / 50
A single interrupt controller can arbitrate among ____ different devices.
10 / 50
The keyboard input character scan code is received at ___ port.
11 / 50
By cascading two DMAs ____ bits can be transferred.
12 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
13 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
14 / 50
The interval timer can operate in ____modes.
15 / 50
_________ is used to identify the cause of interrupt.
16 / 50
Communication between keyboard and keyboard controller is __________.
17 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
18 / 50
Following is not a method of I/O
19 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
20 / 50
21 / 50
There are __________ kinds of serial communication.
22 / 50
At IRQ 7 Interrupt # ___ is used.
23 / 50
______ is Disk interrupt.
24 / 50
There are two main types of interrupts, namely
25 / 50
On the execution of IRET instruction, number of bytes popped from stack is
26 / 50
___________ is used to identify cause of interrupt.
27 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
28 / 50
PPI is used to perform parallel communication
29 / 50
__________is used to control the printer via the BIOS
30 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
31 / 50
Only ________ ports are important from programming point of view.
32 / 50
Keyboard Status Byte is located at the address
33 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
34 / 50
To distinguish 486 with Pentium CPUID Test is used.
35 / 50
The keyboard makes use of interrupt number _______ for its input operations.
36 / 50
------------ is used to read date from RTC
37 / 50
REGS is a Union
38 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
39 / 50
______ is LED control byte.
40 / 50
There are two main types of interrupts namely _________________.
41 / 50
________means typematic rate will be sent in next byte.
42 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
43 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
44 / 50
DTE is ___________
45 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
46 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
47 / 50
Operating system name contains ____ bytes in boot block.
48 / 50
In self test mode the output of the UART is routed to its input
49 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
50 / 50
Tail of keyboard should get to get the start of buffer.
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