CS609-Midterm
1 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
2 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
3 / 50
Standard PC can have _____ PPI.
4 / 50
____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.
5 / 50
Int 14H __________ can be used to receive a byte.
6 / 50
To distinguish 486 with Pentium CPUID Test is used.
7 / 50
Timer interrupt occurs _______ times every second by means of hardware.
8 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
9 / 50
File system used in CD’s is_______ file system
10 / 50
DSR stands for __________ .
11 / 50
____ No. of bytes are used to store the character in the keyboard buffer.
12 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
13 / 50
Keyboard Status Byte is located at the address
14 / 50
BPB stands for _________.
15 / 50
The output on the monitor is controlled by a controller called __________within the PC.
16 / 50
Which port is known as Data Port______
17 / 50
Software based flow control make use of -------- control characters
18 / 50
Communication between keyboard and keyboard controller is __________.
19 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
20 / 50
Interrupt _____ is empty; we can use its vector as a flag.
21 / 50
If CPUID instruction is not present then the processor can be a
22 / 50
The following command “outportb (0x61,inportb(0x61) | 3);” will ________ .
23 / 50
By cascading two DMAs ____ bits can be transferred.
24 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
25 / 50
The Function of I/O controller is to provide ____________.
26 / 50
Only ________ ports are important from programming point of view.
27 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
28 / 50
------------ is used to read date from RTC
29 / 50
Keyboard uses port ____ as status port.
30 / 50
PPI stands for
31 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
32 / 50
33 / 50
The interval timer can operate in ____modes.
34 / 50
If keyboard buffer is empty the head and tail points at the same location.
35 / 50
In ____________each byte is needed to be encapsulated in start and end.
36 / 50
The keyboard input character scan code is received at ___ port.
37 / 50
REGS is a Union
38 / 50
------------ is used to set time from RTC
39 / 50
The BIOS interrupt ________ can be used to configure RTC.
40 / 50
Maximum number of interrupts in a standard PC is
41 / 50
__________is used to control the printer via the BIOS
42 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
43 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
44 / 50
PPI is used to perform parallel communication
45 / 50
46 / 50
There are two main types of interrupts, namely
47 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
48 / 50
_____ bit is cleared to indicate the low nibble is being sent.
49 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
50 / 50
LPTs can be swapped.
Your score is
The average score is 0%
Restart quiz
