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Q: Is dma controller is processor or controller?
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When does dma controller take control of the bus?

When a DMA module takes control, the processor will communicate with hilario and mark tan with their super friends. they will do their best to kill bernard aguila and his brother roshan to get the AEGIS OF IMMORTAL ...


What is burst mode and cycle stealing mode?

The DMA controller can be used to steal memory cycles from the processor. Hence this interweaing technique is called cycle stealing The DMA Controller may be Given exclusive access main memory to transfer the block of data without interruption this is known as block or burst mode


Is it possible to use a dma controller if the system does not supports the interrupts?

You'd have to use DMA with polling, and thats usually not supported


What 8257 chip means?

The 8257 is a three channel DMA controller.


How does DMA work?

There are signals DACK, DRQ, and TC. When a peripheral wants to move a byte or 2 bytes into memory (is dependent on whether 8 bit or 16 bit DMA channel is in use -- 0,1,2,3 are 8-bit, 5,6,7 are 16-bit), it issues DRQ. DMA controller chats with CPU and after some time DMA controller issues DACK. Seeing DACK, the peripheral puts it's byte on data bus, DMA controller takes it and puts it in memory. If it was the last byte/word to move, DMA controller sets up also TC during the DACK. When peripheral sees TC, it is possible it will not want any more movements,


What is the future type of external memory?

If you mean after external hard drives, probably am 80 GB credit card. MSM9841 and MSM9842 offers two types of memory interface: interface when DMA controller is used (16-bit bus) that memory interface is through DMA controller; interface without DMA controller that memory interface (16-bit bus) is through CPU.


What is the use of Intel 8257 microprocessor?

Its a Programmable Direct Memory Access (DMA) controller.


What is busmastering?

bus mastering is a feature supported by many bus architectures that enables a device connected to the bus to initiate transactions. Also called "First-party DMA", to contrast it with Third-party DMA, the situation where the system DMA controller is actually doing the transfer.


How micro controller differs from micro processor?

micro controller contain system on chip memory, timers,counters where as a micro processor doesn't contain all these


Why DMA controller data transfer is faster?

The direct memory access or DMA mode of data transfer is the fastest amongst all the modes of data transfer.In this mode ,the device may transfer data directly to/from memory without any interference from the CPU.The device requests the CPU through a DMA controller to hold its data,address and control bus so that the device may transfer data directly to/from memory.


Which one is faster controller or processor why?

controller performs its operations faster than processor because controller has memory in it so it takes less time cycles for fetching of address or data from memory where as in processor memory is connected externally so time taken will be more to perform its operations.


How do you fix error code P0601 2001 Plymouth Neon?

P0601 : internal controller processor failureThe engine computer will need replaced.P0601 : internal controller processor failureThe engine computer will need replaced.