CS609-Midterm
1 / 50
_________ is used to identify the cause of interrupt.
2 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
3 / 50
Int 14H __________ can be used to receive a byte.
4 / 50
Only ________ ports are important from programming point of view.
5 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
6 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
7 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
8 / 50
Counter register can be used to divide clock signal.
9 / 50
_____ bit is cleared to indicate the low nibble is being sent.
10 / 50
------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
11 / 50
The service _________ is called the keyboard hook service.
12 / 50
Maximum number of interrupts in a standard PC is
13 / 50
14 / 50
UART stands for_______
15 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
16 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
17 / 50
If keyboard buffer is empty the head and tail points at the same location.
18 / 50
In ____________each byte is needed to be encapsulated in start and end.
19 / 50
______ is used to set time.
20 / 50
DCE is _____________
21 / 50
Timer interrupt is a _________.
22 / 50
There are __________ kinds of serial communication.
23 / 50
PPI is used to perform parallel communication
24 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
25 / 50
------------ is used to read date from RTC
26 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
27 / 50
DTE is ____________.
28 / 50
PPI stands for
29 / 50
Standard PC operates in two modes in terms of memory which are
30 / 50
Each paragraph in keep function is ____ bytes in size.
31 / 50
32 / 50
The interval timer can operate in ____modes.
33 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
34 / 50
The service number is usually placed in the ________ register.
35 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
36 / 50
DCE stands for __________.
37 / 50
Timer interrupt occurs _______ times every second by means of hardware.
38 / 50
Keyboard Status Byte is located at the address
39 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
40 / 50
The keyboard makes use of interrupt number _______ for its input operations.
41 / 50
Software based flow control make use of -------- control characters
42 / 50
In self test mode the output of the UART is routed to its input
43 / 50
NMI Stand for
44 / 50
PPI stands for _____________.
45 / 50
At IRQ 7 Interrupt # ___ is used.
46 / 50
_______ is LED control byte.
47 / 50
To store each character in keyboard buffer ____ bytes are required.
48 / 50
The keyboard input character scan code is received at ___ port.
49 / 50
________means typematic rate will be sent in next byte.
50 / 50
------------ is used to set time from RTC
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