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DMA Controller


Posted by: seminar class
Created at: Thursday 21st of April 2011 11:53:35 PM
Last Edited Or Replied at :Friday 30th of November 2012 01:17:30 AM
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7 DMA Controller might be handling transfers for two different CRT (Cathode Ray Tube) displays, a floppy-disk controller and a magnetic tape unit. Each device is assigned a channel in the 82357. By connecting several DMA chips together, any number of channels can be supported at once. The 82357 has registers to keep track of source and destination addresses, counts and masks, and commands and status. The 82357 is programmed by writing I/O bytes to special command and mode registers. Many options are available including timing, priority schemes, and location, size and type of transfer.
A spec..................[:=> Show Contents <=:]



ppt presentation on 8237 dma controller


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Created at: Thursday 29th of November 2012 11:00:51 AM
Last Edited Or Replied at :Friday 30th of November 2012 01:17:27 AM
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8237 dma cantroller :pin d..................[:=> Show Contents <=:]



DIRECT MEMORY ACCESS details


Posted by: seminar paper
Created at: Wednesday 14th of March 2012 04:59:28 AM
Last Edited Or Replied at :Wednesday 14th of March 2012 04:59:28 AM
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yte, until it had loaded the entire program into memory.

implementing dma in a computer system

A DMA controller implements direct memory access in a computer system.

It connects directly to the I/O device at one end and to the system buses at the other end. It also interacts with the CPU, both via the system buses and two new direct connections.

data transfer using dma controller

To transfer data from an I/O device to memory, the DMA controller first sends a Bus Request to the CPU by setting BR to 1. When it is ready to grant this request, the CPU sets it’s Bus g..................[:=> Show Contents <=:]



DMA Controller


Posted by: seminar class
Created at: Thursday 21st of April 2011 11:53:35 PM
Last Edited Or Replied at :Friday 30th of November 2012 01:17:30 AM
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rce or destination is an I/O port, then the address should remain constant during the transfer.
The 82357 has a very useful feature called auto initialization When you select this, you auto..................[:=> Show Contents <=:]



vlsi project ideas


Posted by: electronics seminars
Created at: Friday 15th of January 2010 01:21:21 PM
Last Edited Or Replied at :Thursday 23rd of February 2012 01:25:25 AM
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sign & Implementation of High Speed DDR DSRAM Controller
tt. Design and Implementation of Efficient Systolic Array Architecture for DWT (Discrete Wavelet Transform)
uu. Design and Implementation of Digital low power base band processor for RFI..................[:=> Show Contents <=:]



Direct Memory Access


Posted by: computer science crazy
Created at: Sunday 21st of September 2008 11:21:32 PM
Last Edited Or Replied at :Thursday 09th of February 2012 03:29:35 AM
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address and ..................[:=> Show Contents <=:]



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