CS609-Midterm
1 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
2 / 50
_____ bit is cleared to indicate the low nibble is being sent.
3 / 50
In self test mode the output of the UART is routed to its input.
4 / 50
In ____________each byte is needed to be encapsulated in start and end.
5 / 50
------------ is used to read date from RTC
6 / 50
Display device (Monitor) performs _________ I/O.
7 / 50
The interval timer can operate in ____modes.
8 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
9 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
10 / 50
If CPUID instruction is not present then the processor can be a
11 / 50
The service number is usually placed in the ________ register.
12 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
13 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
14 / 50
UART stands for_______
15 / 50
------------ is used to set time from RTC
16 / 50
PPI stands for _____________.
17 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
18 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
19 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
20 / 50
NMI Stand for
21 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
22 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
23 / 50
The following command “outportb (0x61,inportb(0x61) & 0xFC);” will
24 / 50
DTE is ____________.
25 / 50
Software based flow control make use of -------- control characters
26 / 50
______ is LED control byte.
27 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
28 / 50
DSR stands for __________ .
29 / 50
At IRQ 7 Interrupt # ___ is used.
30 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
31 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
32 / 50
Int 14H____________ can be used to send a byte
33 / 50
PPI is used to perform parallel communication
34 / 50
LPTs can be swapped.
35 / 50
The following command “outportb (0x61,inportb(0x61) | 3);” will ________ .
36 / 50
37 / 50
A software interrupt does not require EOI (End of interrupt).
38 / 50
DCE is _____________
39 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
40 / 50
File system used in CD’s is_______ file system
41 / 50
The keyboard makes use of interrupt number _______ for its input operations.
42 / 50
------------ is used to read time from RTC
43 / 50
44 / 50
45 / 50
BIOS DO NOT support ______.
46 / 50
Hardware Interrupts are __________.
47 / 50
Int ________ is used to control the printer via the BIOS.
48 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
49 / 50
Keyboard uses port ____ as status port.
50 / 50
Tail of keyboard should get to get the start of buffer.
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