CS609-Midterm
1 / 50
______ is used to set time.
2 / 50
The ______ service # is not used in any interrupt.
3 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
4 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
5 / 50
Communication between keyboard and keyboard controller is __________.
6 / 50
Standard PC operates in two modes in terms of memory which are
7 / 50
Only ________ ports are important from programming point of view.
8 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
9 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
10 / 50
Interrupt service number is usually placed in ____________ register.
11 / 50
DCE stands for __________.
12 / 50
If CPUID instruction is not present then the processor can be a
13 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
14 / 50
In self test mode the output of the UART is routed to its input
15 / 50
If keyboard buffer is empty the head and tail points at the same location.
16 / 50
Timer interrupt is a _________.
17 / 50
The output on the monitor is controlled by a controller called __________within the PC.
18 / 50
___________ is used to identify cause of interrupt.
19 / 50
Interrupt _____ is empty; we can use its vector as a flag.
20 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
21 / 50
_____ bit is cleared to indicate the low nibble is being sent.
22 / 50
______ is LED control byte.
23 / 50
Each paragraph in keep function is ____ bytes in size.
24 / 50
BIOS support _____________UARTS as COM ports.
25 / 50
PPI is used to perform parallel communication
26 / 50
____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.
27 / 50
Maximum number of interrupts in a standard PC is
28 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
29 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
30 / 50
________means typematic rate will be sent in next byte.
31 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
32 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
33 / 50
The keyboard input character scan code is received at ___ port.
34 / 50
35 / 50
UART stands for_______
36 / 50
Hardware Interrupts are __________.
37 / 50
In ____________each byte is needed to be encapsulated in start and end.
38 / 50
The Function of I/O controller is to provide ____________.
39 / 50
Which port is known as Data Port______
40 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
41 / 50
PPI stands for
42 / 50
The ____________ function simply enables the self test facility within the modem control register
43 / 50
44 / 50
Keyboard Status Byte is located at the address
45 / 50
PPI stands for _____________.
46 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
47 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
48 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
49 / 50
____ No. of bytes are used to store the character in the keyboard buffer.
50 / 50
To store each character in keyboard buffer ____ bytes are required.
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