of last data can be recognized when it is completed and the transfer is executed beyond the control of an operation permanently stationed assembler program for the data transfer of the DMA mode by using a counter generating the signal of the interrupt request for CPU of the microprocessor.FURABIO SUKATSURA
A microprocessor with a DMA controller for performing data transfers between a peripheral unit and a memory in response to a transfer request from the peripheral unit. The DMA controller includes a first memory block for storing information necessary to perform a current DMA data transfer and a se...
such as a disk drive, to the main memory on the computer'smotherboard. The microprocessor, or central processing unit (CPU), is freed from involvement with the data transfer, speeding up overall computer operation.
Note that the DMA API works with any bus independent of the underlying microprocessor architecture. You should use the DMA API rather than the bus-specific DMA API, i.e., use the dma_map_*() interfaces rather than the pci_map_*() interfaces. 请注意,DMA API 适用于任何总线,与底层微处理...
In the DMA project of transmitting data from ADC to VDAC , the whole operation goes witout knowing which register in the VDAC is written the value to generate the necessary output. Similarly if I were to writ the data from ADC to DMA and to say UART fifo (UART is configured for RX on...
The peripheral request interfaces support the connection of DMA-capable peripherals to enable memory-to-peripheral and peripheral-to-memory DMA transfers to occur, without intervention from a microprocessor. Dual APB interfaces enable the operation of the DMAC to be partitioned into the Secure state ...
design. Though using MicroBlaze is attractive, I am forced to design without a microprocessor (...
A new DMA method for single- and multimicroprocessor systems The authors present a new DMA system where the CPU need not be kept inactive during the clock cycles where the direct memory access is performed. The method is especially interesting because it allows simultaneous data processing and tra...
(DMA) for nodes in a distributed shared memory system with virtual storage. The processes in the embodiment relate to DMA read, write, and push operations. In the processes, an initiator node in the system sends a message to the home node where the data for the operation will reside or ...
3. The microprocessor as claimed in claim 2, wherein said CPU includes means responsive to the information of said second storage means being copied into said first storage means for loading said second storage means with information which is used for performing a data transfer operation to be ...