CS609-Midterm
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PPI stands for _____________.
2 / 50
In ____________each byte is needed to be encapsulated in start and end.
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_______ is LED control byte.
4 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
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LPTs can be swapped.
6 / 50
Display device (Monitor) performs _________ I/O.
7 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
8 / 50
Keyboard Status Byte is located at the address
9 / 50
On the execution of IRET instruction, number of bytes popped from stack is
10 / 50
There are two main types of interrupts namely _________________.
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Int 14H __________ can be used to set the line parameter of the UART or COM port.
12 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
13 / 50
By cascading two DMAs ____ bits can be transferred.
14 / 50
The service number is usually placed in the ________ register.
15 / 50
Int ________ is used to control the printer via the BIOS.
16 / 50
The keyboard makes use of interrupt number _______ for its input operations.
17 / 50
DTE is ___________
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PPI stands for
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_____ bit is cleared to indicate the low nibble is being sent.
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Which port is known as Data Port______
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NMI Stand for
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23 / 50
------------ is used to read date from RTC
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The output on the monitor is controlled by a controller called __________within the PC.
25 / 50
To store each character in keyboard buffer ____ bytes are required.
26 / 50
REGS is a Union
27 / 50
UART stands for_______
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File system used in CD’s is_______ file system
29 / 50
Each paragraph in keep function is ____ bytes in size.
30 / 50
Which of the following are types of ISR __________.
31 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
32 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
33 / 50
Only ________ ports are important from programming point of view.
34 / 50
BPB stands for _________.
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Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
36 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
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38 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
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40 / 50
Hardware Interrupts are __________.
41 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
42 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
43 / 50
To distinguish 486 with Pentium CPUID Test is used.
44 / 50
BIOS support _____________UARTS as COM ports.
45 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
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Standard PC can have _____ PPI.
47 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
48 / 50
49 / 50
In self test mode the output of the UART is routed to its input.
50 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
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