CS609-Midterm
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Hardware Interrupts are __________.
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The -------- function receive a byte and COM port number is passed as parameter using BIOS service
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In ____________each byte is needed to be encapsulated in start and end.
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Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
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Maximum number of interrupts in a standard PC is
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PPI stands for _____________.
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Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
8 / 50
The keyboard makes use of interrupt number _______ for its input operations.
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______ is used to set time.
10 / 50
Counter register can be used to divide clock signal.
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The output on the monitor is controlled by a controller called __________within the PC.
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The Function of I/O controller is to provide ____________.
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In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
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_________ is used to identify the cause of interrupt.
15 / 50
DSR stands for __________ .
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DMA stands for_________
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DTE is ___________
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The interval timer can operate in ____modes.
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Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
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______ is LED control byte.
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Interrupt 9 usually reads the _________ from keyboard.
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Int 14H __________ can be used to set the line parameter of the UART or COM port.
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Communication between keyboard and keyboard controller is __________.
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IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
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The BIOS interrupt 0x1AH can be used to configure real time clock
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At IRQ 7 Interrupt # ___ is used.
28 / 50
File can be______ viewed as collection of clusters or blocks.
29 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
30 / 50
Only ________ ports are important from programming point of view.
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To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
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Int 14H____________ can be used to send a byte
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The PPI acts as an interface between the CPU and a parallel ________ .
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LPTs can be swapped.
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The ______ service # is not used in any interrupt.
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The service number is usually placed in the ________ register.
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Which of the following are types of ISR __________.
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If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.
39 / 50
Control information in files is maintained using
40 / 50
Display device (Monitor) performs _________ I/O.
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DTE is ____________.
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The ________function initialize the COM port whose number is passed as parameter using BIOS services.
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The following command “outportb (0x61,inportb(0x61) & 0xFC);” will
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In self test mode the output of the UART is routed to its input
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_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
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There are two main types of interrupts namely _________________.
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REGS is a Union
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DCE stands for __________.
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