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DMA
HOW DMA WORKS to transfer data from memory to a peripheral:
1. The peripheral Device requests for DMA service by pulling DREQ line high
2. The DMA controller requests CPU go on hold by pulling CPU's HRQ line high
3. The CPU finished current bus cycle, then acknowledges with HLDA the CPU relinquishes ALL bus control now (3-state)
4. The DMA controller activates DACK line to acknowledge the DMA to the peripheral
5. The DMA start transferring data to the peripheral
Can any one assist me with this program. I am not efficient with assembly language and I need assistance badly. I am not asking anyone to do my work I just need help step by step
END : END of Program:- The END directive marks the ending of the assembly language program. When the assembler comes across this END directive, it avoided the source lines avai
Interrupt System Based on Multiple 8259As A multiple 8259A interrupt system is diagrammed in given figure in this figure data bus drivers are not indicated, but they could be i
Port Mapped I/O or I/O Mapped I/O I/O devices are mapped into a separate address space. This is generally accomplished by having a different set of signal lines to denote a mem
assembly language program to find larges number in an array
CISC Characteristics : The design of an instruction set for a computer might take into consideration not only machine language constraints, but also the requirements i
can any one help me in my project by using assembly language
relocation
SBB: Subtract with Borrow :- The subtract with borrow instruction subtracts the source operand and the borrow flag (CF) which might reflect the result of the past calculations,
to separate positive and negative numbers
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