CS609-Midterm
1 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
2 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
3 / 50
An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.
4 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
5 / 50
REGS is a Union
6 / 50
_____ bit is cleared to indicate the low nibble is being sent.
7 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
8 / 50
There are two type of communication synchronous and Anti Synchronous
9 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
10 / 50
------------ is used to read date from RTC
11 / 50
To store each character in keyboard buffer ____ bytes are required.
12 / 50
_______ is LED control byte.
13 / 50
The interval timer can operate in ____modes.
14 / 50
Which of the following are types of ISR __________.
15 / 50
Each paragraph in keep function is ____ bytes in size.
16 / 50
Int 14H____________ can be used to send a byte
17 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
18 / 50
______ is used to set time.
19 / 50
Display device (Monitor) performs _________ I/O.
20 / 50
The ____________ function simply enables the self test facility within the modem control register
21 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
22 / 50
__________is used to control the printer via the BIOS
23 / 50
BIOS support _____________UARTS as COM ports.
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The Function of I/O controller is to provide ____________.
25 / 50
DSR stands for __________ .
26 / 50
Operating system name contains ____ bytes in boot block.
27 / 50
On the execution of IRET instruction, number of bytes popped from stack is
28 / 50
NMI Stand for
29 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
30 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
31 / 50
Control information in files is maintained using
32 / 50
The keyboard makes use of interrupt number _______ for its input operations.
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34 / 50
------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
35 / 50
___________ is used to identify cause of interrupt.
36 / 50
______ is Disk interrupt.
37 / 50
Standard PC operates in two modes in terms of memory which are
38 / 50
Tail of keyboard should get to get the start of buffer.
39 / 50
If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.
40 / 50
41 / 50
In ____________each byte is needed to be encapsulated in start and end.
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43 / 50
In self test mode the output of the UART is routed to its input
44 / 50
45 / 50
PPI stands for
46 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
47 / 50
______ is LED control byte.
48 / 50
Maximum number of interrupts in a standard PC is
49 / 50
There are two main types of interrupts namely _________________.
50 / 50
To distinguish 486 with Pentium CPUID Test is used.
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