CS609-Midterm
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We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
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The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
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------------ is used to set time from RTC
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Maximum number of interrupts in a standard PC is
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------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
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PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
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______ is Disk interrupt.
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DTE is ____________.
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To access the block within cluster using BIOS services the cluster number should be converted into _____.
10 / 50
Interrupt service number is usually placed in ____________ register.
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The following command “outportb (0x61,inportb(0x61) | 3);” will ________ .
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Int 14H __________ can be used to set the line parameter of the UART or COM port.
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Standard PC can have _____ PPI.
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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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------------ is used to read time from RTC
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DTE is ___________
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The following command “outportb (0x61,inportb(0x61) & 0xFC);” will
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_______ is LED control byte.
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The keyboard makes use of interrupt number _______ for its input operations.
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The PPI acts as an interface between the CPU and a parallel ________ .
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The amount of memory above conventional memory (extended memory) can be determined using the service _______.
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Only ________ ports are important from programming point of view.
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24 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
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Interrupt ______ is used to get or set the time.
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27 / 50
BIOS support _____________UARTS as COM ports.
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In ____________each byte is needed to be encapsulated in start and end.
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BPB stands for _________.
30 / 50
Each paragraph in keep function is ____ bytes in size.
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_____ bit is cleared to indicate the low nibble is being sent.
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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 ____.
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Timer interrupt is a _________.
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------------ is used to read date from RTC
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36 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
37 / 50
File system used in CD’s is_______ file system
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By cascading two DMAs ____ bits can be transferred.
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40 / 50
The ____________ function simply enables the self test facility within the modem control register
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There are __________ kinds of serial communication.
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________means typematic rate will be sent in next byte.
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In self test mode the output of the UART is routed to its input
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The -------- function receive a byte and COM port number is passed as parameter using BIOS service
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The Function of I/O controller is to provide ____________.
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Standard PC operates in two modes in terms of memory which are
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______ is LED control byte.
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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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Keyboard uses port ____ as status port.
50 / 50
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