CS609-Midterm
1 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
2 / 50
The interval timer can operate in ____modes.
3 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
4 / 50
_________ is used to identify the cause of interrupt.
5 / 50
There are two main types of interrupts namely _________________.
6 / 50
A software interrupt does not require EOI (End of interrupt).
7 / 50
__________is used to control the printer via the BIOS
8 / 50
_______ is LED control byte.
9 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
10 / 50
A single interrupt controller can arbitrate among ____ different devices.
11 / 50
DCE is _____________
12 / 50
Keyboard uses port ____ as status port.
13 / 50
Standard PC operates in two modes in terms of memory which are
14 / 50
The keyboard makes use of interrupt number _______ for its input operations.
15 / 50
In ____________each byte is needed to be encapsulated in start and end.
16 / 50
The following command “outportb (0x61,inportb(0x61) & 0xFC);” will
17 / 50
Which port is known as Data Port______
18 / 50
At IRQ 7 Interrupt # ___ is used.
19 / 50
DMA stands for_________
20 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
21 / 50
______ is used to set time.
22 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
23 / 50
DSR stands for __________ .
24 / 50
Int 14H __________ can be used to receive a byte.
25 / 50
DTE is ____________.
26 / 50
_____ bit is cleared to indicate the low nibble is being sent.
27 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
28 / 50
The ______ service # is not used in any interrupt.
29 / 50
File system used in CD’s is_______ file system
30 / 50
REGS is a Union
31 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
32 / 50
PPI is used to perform parallel communication
33 / 50
Communication between keyboard and keyboard controller is __________.
34 / 50
___________ is used to identify cause of interrupt.
35 / 50
Int 14H____________ can be used to send a byte
36 / 50
Maximum number of interrupts in a standard PC is
37 / 50
38 / 50
An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.
39 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
40 / 50
If CPUID instruction is not present then the processor can be a
41 / 50
PPI stands for _____________.
42 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
43 / 50
The service number is usually placed in the ________ register.
44 / 50
Int ________ is used to control the printer via the BIOS.
45 / 50
Register can be used to divide frequency is _________
46 / 50
The BIOS interrupt ________ can be used to configure RTC.
47 / 50
Only ________ ports are important from programming point of view.
48 / 50
Timer interrupt occurs _______ times every second by means of hardware.
49 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
50 / 50
NMI Stand for
Your score is
The average score is 0%
Restart quiz
