CS609-Midterm
1 / 50
There are two main types of interrupts, namely
2 / 50
In self test mode the output of the UART is routed to its input.
3 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
4 / 50
______ is used to set time.
5 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
6 / 50
Which port is known as Data Port______
7 / 50
------------ is used to set time from RTC
8 / 50
Each paragraph in keep function is ____ bytes in size.
9 / 50
Int 14H____________ can be used to send a byte
10 / 50
If keyboard buffer is empty the head and tail points at the same location.
11 / 50
DSR stands for __________ .
12 / 50
At IRQ 7 Interrupt # ___ is used.
13 / 50
___________ is used to identify cause of interrupt.
14 / 50
DTE is ____________.
15 / 50
PPI is used to perform parallel communication
16 / 50
Communication between keyboard and keyboard controller is __________.
17 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
18 / 50
A single interrupt controller can arbitrate among ____ different devices.
19 / 50
The output on the monitor is controlled by a controller called __________within the PC.
20 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
21 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
22 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
23 / 50
An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.
24 / 50
By cascading two DMAs ____ bits can be transferred.
25 / 50
Hardware Interrupts are __________.
26 / 50
In ____________each byte is needed to be encapsulated in start and end.
27 / 50
------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
28 / 50
Keyboard Status Byte is located at the address
29 / 50
The keyboard input character scan code is received at ___ port.
30 / 50
______ is Disk interrupt.
31 / 50
32 / 50
There are two type of communication synchronous and Anti Synchronous
33 / 50
_____ bit is cleared to indicate the low nibble is being sent.
34 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
35 / 50
The keyboard makes use of interrupt number _______ for its input operations.
36 / 50
37 / 50
____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.
38 / 50
There are two main types of interrupts namely _________________.
39 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
40 / 50
BIOS support _____________UARTS as COM ports.
41 / 50
Interrupt ______ is used to get or set the time.
42 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
43 / 50
The service number is usually placed in the ________ register.
44 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
45 / 50
UART stands for_______
46 / 50
________means typematic rate will be sent in next byte.
47 / 50
File system used in CD’s is_______ file system
48 / 50
Following is not a method of I/O
49 / 50
Tail of keyboard should get to get the start of buffer.
50 / 50
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