CS609-Midterm
1 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
2 / 50
------------ is used to read date from RTC
3 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
4 / 50
The ______ service # is not used in any interrupt.
5 / 50
PPI stands for _____________.
6 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
7 / 50
Which of the following are types of ISR __________.
8 / 50
In self test mode the output of the UART is routed to its input.
9 / 50
_____ bit is cleared to indicate the low nibble is being sent.
10 / 50
DCE is _____________
11 / 50
The Function of I/O controller is to provide ____________.
12 / 50
The interval timer can operate in ____modes.
13 / 50
NMI Stand for
14 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
15 / 50
DTE is ___________
16 / 50
Software based flow control make use of -------- control characters
17 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
18 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
19 / 50
Register can be used to divide frequency is _________
20 / 50
The output on the monitor is controlled by a controller called __________within the PC.
21 / 50
______ is used to set time.
22 / 50
Keyboard uses port ____ as status port.
23 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
24 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
25 / 50
An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.
26 / 50
In ____________each byte is needed to be encapsulated in start and end.
27 / 50
Hardware Interrupts are __________.
28 / 50
BIOS DO NOT support ______.
29 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
30 / 50
REGS is a Union
31 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
32 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
33 / 50
There are two main types of interrupts, namely
34 / 50
35 / 50
36 / 50
__________is used to control the printer via the BIOS
37 / 50
Interrupt _____ is empty; we can use its vector as a flag.
38 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
39 / 50
If CPUID instruction is not present then the processor can be a
40 / 50
There are two main types of interrupts namely _________________.
41 / 50
42 / 50
Interrupt ______ is used to get or set the time.
43 / 50
______ is Disk interrupt.
44 / 50
Standard PC operates in two modes in terms of memory which are
45 / 50
UART stands for_______
46 / 50
In self test mode the output of the UART is routed to its input
47 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
48 / 50
To store each character in keyboard buffer ____ bytes are required.
49 / 50
By cascading two DMAs ____ bits can be transferred.
50 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
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