CS609-Midterm
1 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
2 / 50
_________ is used to identify the cause of interrupt.
3 / 50
Maximum number of interrupts in a standard PC is
4 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
5 / 50
There are two type of communication synchronous and Anti Synchronous
6 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
7 / 50
The service _________ is called the keyboard hook service.
8 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
9 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
10 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
11 / 50
The ____________ function simply enables the self test facility within the modem control register
12 / 50
The Function of I/O controller is to provide ____________.
13 / 50
Display device (Monitor) performs _________ I/O.
14 / 50
15 / 50
_____ bit is cleared to indicate the low nibble is being sent.
16 / 50
Each paragraph in keep function is ____ bytes in size.
17 / 50
Hardware Interrupts are __________.
18 / 50
The interval timer can operate in ____modes.
19 / 50
------------ is used to set time from RTC
20 / 50
Command register is an _____ bit register
21 / 50
Control information in files is maintained using
22 / 50
23 / 50
Communication between keyboard and keyboard controller is __________.
24 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
25 / 50
Keyboard uses port ____ as status port.
26 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
27 / 50
On the execution of IRET instruction, number of bytes popped from stack is
28 / 50
________means typematic rate will be sent in next byte.
29 / 50
LPTs can be swapped.
30 / 50
BIOS support _____________UARTS as COM ports.
31 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
32 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
33 / 50
DTE is ____________.
34 / 50
35 / 50
A software interrupt does not require EOI (End of interrupt).
36 / 50
______ is Disk interrupt.
37 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
38 / 50
The BIOS interrupt ________ can be used to configure RTC.
39 / 50
The keyboard input character scan code is received at ___ port.
40 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
41 / 50
Interrupt 9 usually reads the _________ from keyboard.
42 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
43 / 50
UART stands for_______
44 / 50
To store each character in keyboard buffer ____ bytes are required.
45 / 50
Int 14H____________ can be used to send a byte
46 / 50
Interrupt _____ is empty; we can use its vector as a flag.
47 / 50
______ is used to set time.
48 / 50
The service number is usually placed in the ________ register.
49 / 50
REGS is a Union
50 / 50
__________is used to control the printer via the BIOS
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