CS609-Midterm
1 / 50
BPB stands for _________.
2 / 50
The ____________ function simply enables the self test facility within the modem control register
3 / 50
Communication between keyboard and keyboard controller is __________.
4 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
5 / 50
If CPUID instruction is not present then the processor can be a
6 / 50
______ is used to set time.
7 / 50
____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.
8 / 50
There are two main types of interrupts namely _________________.
9 / 50
In ____________each byte is needed to be encapsulated in start and end.
10 / 50
A single interrupt controller can arbitrate among ____ different devices.
11 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
12 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
13 / 50
The keyboard makes use of interrupt number _______ for its input operations.
14 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
15 / 50
PPI stands for
16 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
17 / 50
_______ is LED control byte.
18 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
19 / 50
In self test mode the output of the UART is routed to its input.
20 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
21 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
22 / 50
_____ bit is cleared to indicate the low nibble is being sent.
23 / 50
NMI Stand for
24 / 50
BIOS support _____________UARTS as COM ports.
25 / 50
PPI stands for _____________.
26 / 50
The Function of I/O controller is to provide ____________.
27 / 50
The interval timer can operate in ____modes.
28 / 50
Display device (Monitor) performs _________ I/O.
29 / 50
In self test mode the output of the UART is routed to its input
30 / 50
Hardware Interrupts are __________.
31 / 50
32 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
33 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
34 / 50
Keyboard uses port ____ as status port.
35 / 50
________means typematic rate will be sent in next byte.
36 / 50
Standard PC operates in two modes in terms of memory which are
37 / 50
Which port is known as Data Port______
38 / 50
39 / 50
Interrupt _____ is empty; we can use its vector as a flag.
40 / 50
Register can be used to divide frequency is _________
41 / 50
UART stands for_______
42 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
43 / 50
Timer interrupt occurs _______ times every second by means of hardware.
44 / 50
45 / 50
Int 14H____________ can be used to send a byte
46 / 50
47 / 50
DSR stands for __________ .
48 / 50
49 / 50
BIOS DO NOT support ______.
50 / 50
Only ________ ports are important from programming point of view.
Your score is
The average score is 0%
Restart quiz
