CS609-Midterm
1 / 50
BPB stands for _________.
2 / 50
Following is not a method of I/O
3 / 50
There are __________ kinds of serial communication.
4 / 50
There are two main types of interrupts namely _________________.
5 / 50
______ is Disk interrupt.
6 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
7 / 50
------------ is used to read time from RTC
8 / 50
Command register is an _____ bit register
9 / 50
By cascading two DMAs ____ bits can be transferred.
10 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
11 / 50
DSR stands for __________ .
12 / 50
Maximum number of interrupts in a standard PC is
13 / 50
Interrupt ______ is used to get or set the time.
14 / 50
To distinguish 486 with Pentium CPUID Test is used.
15 / 50
BIOS support _____________UARTS as COM ports.
16 / 50
17 / 50
Tail of keyboard should get to get the start of buffer.
18 / 50
PPI stands for
19 / 50
On the execution of IRET instruction, number of bytes popped from stack is
20 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
21 / 50
Interrupt _____ is empty; we can use its vector as a flag.
22 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
23 / 50
The interval timer can operate in _______ modes.
24 / 50
Hardware Interrupts are __________.
25 / 50
Software based flow control make use of -------- control characters
26 / 50
____ No. of bytes are used to store the character in the keyboard buffer.
27 / 50
There are two main types of interrupts, namely
28 / 50
LPTs can be swapped.
29 / 50
The service number is usually placed in the ________ register.
30 / 50
DTE is ____________.
31 / 50
32 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
33 / 50
Display device (Monitor) performs _________ I/O.
34 / 50
The output on the monitor is controlled by a controller called __________within the PC.
35 / 50
36 / 50
The BIOS interrupt ________ can be used to configure RTC.
37 / 50
In self test mode the output of the UART is routed to its input.
38 / 50
Counter register can be used to divide clock signal.
39 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
40 / 50
A single interrupt controller can arbitrate among ____ different devices.
41 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
42 / 50
Interrupt service number is usually placed in ____________ register.
43 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
44 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
45 / 50
If CPUID instruction is not present then the processor can be a
46 / 50
Int 14H____________ can be used to send a byte
47 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
48 / 50
The Function of I/O controller is to provide ____________.
49 / 50
Int ________ is used to control the printer via the BIOS.
50 / 50
------------ is used to set time from RTC
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