CS609-Midterm
1 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
2 / 50
------------ is used to set time from RTC
3 / 50
The interval timer can operate in ____modes.
4 / 50
Interrupt _____ is empty; we can use its vector as a flag.
5 / 50
Standard PC operates in two modes in terms of memory which are
6 / 50
There are two main types of interrupts, namely
7 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
8 / 50
BPB stands for _________.
9 / 50
Interrupt ______ is used to get or set the time.
10 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
11 / 50
DSR stands for __________ .
12 / 50
Int ________ is used to control the printer via the BIOS.
13 / 50
Int 14H____________ can be used to send a byte
14 / 50
NMI Stand for
15 / 50
The Function of I/O controller is to provide ____________.
16 / 50
Standard PC can have _____ PPI.
17 / 50
The interval timer can operate in _______ modes.
18 / 50
The keyboard makes use of interrupt number _______ for its input operations.
19 / 50
Communication between keyboard and keyboard controller is __________.
20 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
21 / 50
In self test mode the output of the UART is routed to its input.
22 / 50
PPI stands for _____________.
23 / 50
To distinguish 486 with Pentium CPUID Test is used.
24 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
25 / 50
___________ is used to identify cause of interrupt.
26 / 50
______ is Disk interrupt.
27 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
28 / 50
The service _________ is called the keyboard hook service.
29 / 50
______ is LED control byte.
30 / 50
_______ is LED control byte.
31 / 50
Keyboard uses port ____ as status port.
32 / 50
If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.
33 / 50
34 / 50
If CPUID instruction is not present then the processor can be a
35 / 50
The ____________ function simply enables the self test facility within the modem control register
36 / 50
REGS is a Union
37 / 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);
38 / 50
Interrupt 9 usually reads the _________ from keyboard.
39 / 50
There are two main types of interrupts namely _________________.
40 / 50
Int 14H __________ can be used to receive a byte.
41 / 50
Hardware Interrupts are __________.
42 / 50
DTE is ____________.
43 / 50
44 / 50
45 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
46 / 50
Operating system name contains ____ bytes in boot block.
47 / 50
File system used in CD’s is_______ file system
48 / 50
BIOS support _____________UARTS as COM ports.
49 / 50
____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.
50 / 50
DCE is _____________
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