CS609-Midterm
1 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
2 / 50
There are two type of communication synchronous and Anti Synchronous
3 / 50
By cascading two DMAs ____ bits can be transferred.
4 / 50
In self test mode the output of the UART is routed to its input.
5 / 50
_____ bit is cleared to indicate the low nibble is being sent.
6 / 50
Software based flow control make use of -------- control characters
7 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
8 / 50
On the execution of IRET instruction, number of bytes popped from stack is
9 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
10 / 50
There are two main types of interrupts, namely
11 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
12 / 50
Maximum number of interrupts in a standard PC is
13 / 50
To distinguish 486 with Pentium CPUID Test is used.
14 / 50
Command register is an _____ bit register
15 / 50
DSR stands for __________ .
16 / 50
Int ________ is used to control the printer via the BIOS.
17 / 50
In ____________each byte is needed to be encapsulated in start and end.
18 / 50
__________is used to control the printer via the BIOS
19 / 50
The ______ service # is not used in any interrupt.
20 / 50
Hardware Interrupts are __________.
21 / 50
Display device (Monitor) performs _________ I/O.
22 / 50
PPI stands for _____________.
23 / 50
The interval timer can operate in ____modes.
24 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
25 / 50
The service number is usually placed in the ________ register.
26 / 50
The Function of I/O controller is to provide ____________.
27 / 50
File system used in CD’s is_______ file system
28 / 50
The keyboard input character scan code is received at ___ port.
29 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
30 / 50
UART stands for_______
31 / 50
Interrupt service number is usually placed in ____________ register.
32 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
33 / 50
The keyboard makes use of interrupt number _______ for its input operations.
34 / 50
Keyboard uses port ____ as status port.
35 / 50
There are __________ kinds of serial communication.
36 / 50
Communication between keyboard and keyboard controller is __________.
37 / 50
38 / 50
39 / 50
If keyboard buffer is empty the head and tail points at the same location.
40 / 50
A single interrupt controller can arbitrate among ____ different devices.
41 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
42 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
43 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
44 / 50
Tail of keyboard should get to get the start of buffer.
45 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
46 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
47 / 50
48 / 50
Register can be used to divide frequency is _________
49 / 50
_________ is used to identify the cause of interrupt.
50 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
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