CS609-Midterm
1 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
2 / 50
On the execution of IRET instruction, number of bytes popped from stack is
3 / 50
There are __________ kinds of serial communication.
4 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
5 / 50
If CPUID instruction is not present then the processor can be a
6 / 50
The keyboard input character scan code is received at ___ port.
7 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
8 / 50
REGS is a Union
9 / 50
The following command “outportb (0x61,inportb(0x61) & 0xFC);” will
10 / 50
The ____________ function simply enables the self test facility within the modem control register
11 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
12 / 50
DTE is ____________.
13 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
14 / 50
Counter register can be used to divide clock signal.
15 / 50
____ No. of bytes are used to store the character in the keyboard buffer.
16 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
17 / 50
To distinguish 486 with Pentium CPUID Test is used.
18 / 50
BIOS DO NOT support ______.
19 / 50
______ is LED control byte.
20 / 50
The interval timer can operate in _______ modes.
21 / 50
The keyboard makes use of interrupt number _______ for its input operations.
22 / 50
The output on the monitor is controlled by a controller called __________within the PC.
23 / 50
PPI is used to perform parallel communication
24 / 50
The interval timer can operate in ____modes.
25 / 50
At IRQ 7 Interrupt # ___ is used.
26 / 50
Following is not a method of I/O
27 / 50
Control information in files is maintained using
28 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
29 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
30 / 50
_____ bit is cleared to indicate the low nibble is being sent.
31 / 50
______ is used to set time.
32 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
33 / 50
Each paragraph in keep function is ____ bytes in size.
34 / 50
The Function of I/O controller is to provide ____________.
35 / 50
PPI stands for _____________.
36 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
37 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
38 / 50
A single interrupt controller can arbitrate among ____ different devices.
39 / 50
DTE is ___________
40 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
41 / 50
Standard PC operates in two modes in terms of memory which are
42 / 50
If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.
43 / 50
___________ is used to identify cause of interrupt.
44 / 50
The service number is usually placed in the ________ register.
45 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
46 / 50
Interrupt ______ is used to get or set the time.
47 / 50
Display device (Monitor) performs _________ I/O.
48 / 50
Keyboard Status Byte is located at the address
49 / 50
DSR stands for __________ .
50 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
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