CS609-Midterm
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DMA stands for_________
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______ is LED control byte.
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The ____________ function simply enables the self test facility within the modem control register
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Hardware Interrupts are __________.
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Register can be used to divide frequency is _________
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Int ________ is used to control the printer via the BIOS.
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_____ bit is cleared to indicate the low nibble is being sent.
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Keyboard Status Byte is located at the address
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There are two main types of interrupts, namely
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The keyboard makes use of interrupt number _______ for its input operations.
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Display device (Monitor) performs _________ I/O.
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The PPI acts as an interface between the CPU and a parallel ________ .
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NMI Stand for
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File system used in CD’s is_______ file system
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A single interrupt controller can arbitrate among ____ different devices.
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___________ is used to identify cause of interrupt.
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The ________function initialize the COM port whose number is passed as parameter using BIOS services.
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DCE stands for __________.
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The BIOS interrupt 0x1AH can be used to configure real time clock
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An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.
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BIOS DO NOT support ______.
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The Function of I/O controller is to provide ____________.
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In case of synchronous communication a timing signal is required to identify the start and end of a bit.
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25 / 50
------------ is used to read time from RTC
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Only ________ ports are important from programming point of view.
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__________is used to control the printer via the BIOS
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In self test mode the output of the UART is routed to its input
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The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
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------------ is used to read date from RTC
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Int 14H __________ can be used to set the line parameter of the UART or COM port.
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The -------- function receive a byte and COM port number is passed as parameter using BIOS service
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PPI is used to perform parallel communication
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The BIOS interrupt ________ can be used to configure RTC.
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Communication between keyboard and keyboard controller is __________.
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____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.
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Interrupt ______ is used to get or set the time.
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File can be______ viewed as collection of clusters or blocks.
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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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By cascading two DMAs ____ bits can be transferred.
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PPI stands for _____________.
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The interval timer can operate in ____modes.
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DTE is ___________
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UART stands for_______
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There are two type of communication synchronous and Anti Synchronous
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The following command “outportb (0x61,inportb(0x61) & 0xFC);” will
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There are __________ kinds of serial communication.
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