CS609-Midterm
1 / 50
In self test mode the output of the UART is routed to its input.
2 / 50
The interval timer can operate in ____modes.
3 / 50
DMA stands for_________
4 / 50
Only ________ ports are important from programming point of view.
5 / 50
PPI stands for
6 / 50
PPI is used to perform parallel communication
7 / 50
UART stands for_______
8 / 50
9 / 50
Timer interrupt is a _________.
10 / 50
LPTs can be swapped.
11 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
12 / 50
____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.
13 / 50
Register can be used to divide frequency is _________
14 / 50
The keyboard makes use of interrupt number _______ for its input operations.
15 / 50
_________ is used to identify the cause of interrupt.
16 / 50
______ is Disk interrupt.
17 / 50
Tail of keyboard should get to get the start of buffer.
18 / 50
19 / 50
There are two main types of interrupts, namely
20 / 50
The interval timer can operate in _______ modes.
21 / 50
22 / 50
To distinguish 486 with Pentium CPUID Test is used.
23 / 50
Standard PC operates in two modes in terms of memory which are
24 / 50
25 / 50
Interrupt 9 usually reads the _________ from keyboard.
26 / 50
The following command “outportb (0x61,inportb(0x61) | 3);” will ________ .
27 / 50
In self test mode the output of the UART is routed to its input
28 / 50
Keyboard Status Byte is located at the address
29 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
30 / 50
Following is not a method of I/O
31 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
32 / 50
Display device (Monitor) performs _________ I/O.
33 / 50
Communication between keyboard and keyboard controller is __________.
34 / 50
At IRQ 7 Interrupt # ___ is used.
35 / 50
The ____________ function simply enables the self test facility within the modem control register
36 / 50
37 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
38 / 50
__________is used to control the printer via the BIOS
39 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
40 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
41 / 50
In ____________each byte is needed to be encapsulated in start and end.
42 / 50
Timer interrupt occurs _______ times every second by means of hardware.
43 / 50
The Function of I/O controller is to provide ____________.
44 / 50
On the execution of IRET instruction, number of bytes popped from stack is
45 / 50
DSR stands for __________ .
46 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
47 / 50
The ______ service # is not used in any interrupt.
48 / 50
Counter register can be used to divide clock signal.
49 / 50
Int ________ is used to control the printer via the BIOS.
50 / 50
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