CS609-Midterm
1 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
2 / 50
______ is Disk interrupt.
3 / 50
_____ bit is cleared to indicate the low nibble is being sent.
4 / 50
Standard PC can have _____ PPI.
5 / 50
Timer interrupt is a _________.
6 / 50
7 / 50
LPTs can be swapped.
8 / 50
PPI stands for _____________.
9 / 50
DTE is ____________.
10 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
11 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
12 / 50
Which port is known as Data Port______
13 / 50
Counter register can be used to divide clock signal.
14 / 50
The interval timer can operate in _______ modes.
15 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
16 / 50
File system used in CD’s is_______ file system
17 / 50
Display device (Monitor) performs _________ I/O.
18 / 50
Interrupt _____ is empty; we can use its vector as a flag.
19 / 50
In ____________each byte is needed to be encapsulated in start and end.
20 / 50
______ is used to set time.
21 / 50
Interrupt 9 usually reads the _________ from keyboard.
22 / 50
On the execution of IRET instruction, number of bytes popped from stack is
23 / 50
The keyboard makes use of interrupt number _______ for its input operations.
24 / 50
UART stands for_______
25 / 50
------------ is used to read time from RTC
26 / 50
Tail of keyboard should get to get the start of buffer.
27 / 50
Control information in files is maintained using
28 / 50
Communication between keyboard and keyboard controller is __________.
29 / 50
30 / 50
A single interrupt controller can arbitrate among ____ different devices.
31 / 50
Interrupt ______ is used to get or set the time.
32 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
33 / 50
The Function of I/O controller is to provide ____________.
34 / 50
To distinguish 486 with Pentium CPUID Test is used.
35 / 50
There are two main types of interrupts namely _________________.
36 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
37 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
38 / 50
------------ is used to read date from RTC
39 / 50
The service _________ is called the keyboard hook service.
40 / 50
Maximum number of interrupts in a standard PC is
41 / 50
Standard PC operates in two modes in terms of memory which are
42 / 50
REGS is a Union
43 / 50
Keyboard uses port ____ as status port.
44 / 50
The service number is usually placed in the ________ register.
45 / 50
If keyboard buffer is empty the head and tail points at the same location.
46 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
47 / 50
Keyboard Status Byte is located at the address
48 / 50
49 / 50
Software based flow control make use of -------- control characters
50 / 50
BPB stands for _________.
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