CS609-Midterm
1 / 50
The BIOS interrupt ________ can be used to configure RTC.
2 / 50
UART stands for_______
3 / 50
To distinguish 486 with Pentium CPUID Test is used.
4 / 50
Communication between keyboard and keyboard controller is __________.
5 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
6 / 50
______ is LED control byte.
7 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
8 / 50
File system used in CD’s is_______ file system
9 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
10 / 50
A single interrupt controller can arbitrate among ____ different devices.
11 / 50
12 / 50
------------ is used to set time from RTC
13 / 50
Int 14H __________ can be used to receive a byte.
14 / 50
DTE is ___________
15 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
16 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
17 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
18 / 50
The keyboard makes use of interrupt number _______ for its input operations.
19 / 50
BIOS support _____________UARTS as COM ports.
20 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
21 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
22 / 50
Standard PC operates in two modes in terms of memory which are
23 / 50
In keyboard status byte bit no. 2 and 3 are used for ctrl and alt keys respectively. which of the following condition is used to check that Ctrl + Alt keys are pressed. Where: unsigned char far * scr = (unsigned char far *)(0x00400017);
24 / 50
_______ is LED control byte.
25 / 50
Command register is an _____ bit register
26 / 50
Keyboard uses port ____ as status port.
27 / 50
DSR stands for __________ .
28 / 50
___________ is used to identify cause of interrupt.
29 / 50
Tail of keyboard should get to get the start of buffer.
30 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
31 / 50
Interrupt _____ is empty; we can use its vector as a flag.
32 / 50
In self test mode the output of the UART is routed to its input
33 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
34 / 50
Each paragraph in keep function is ____ bytes in size.
35 / 50
36 / 50
REGS is a Union
37 / 50
Hardware Interrupts are __________.
38 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
39 / 50
__________is used to control the printer via the BIOS
40 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
41 / 50
Keyboard Status Byte is located at the address
42 / 50
43 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
44 / 50
The output on the monitor is controlled by a controller called __________within the PC.
45 / 50
Register can be used to divide frequency is _________
46 / 50
------------ is used to read date from RTC
47 / 50
48 / 50
At IRQ 7 Interrupt # ___ is used.
49 / 50
Which port is known as Data Port______
50 / 50
_____ bit is cleared to indicate the low nibble is being sent.
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