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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
The 486 Introduced in the year 1989 the 80486 did not feature any radically new processor technology. Instead, it joints a 386 processor, a cache memory controller and a math c
DAS: Decimal Adjust after Subtraction:- This instruction converts the result of subtraction operation of 2 packed BCD numbers to a valid BCD number. The subtraction operation has
add the contents of the defined memory locations 120, 133, 122 using mov instruction in dosbox
ADD: Add :- This instruction adds an immediate contents of a memory location specified in the a register ( source ) or instruction to the contents of another register (destinat
i have a question.
hi!im looking for someone who expert in an assembly language and help me write the programmed!Thank you
a program that display English letters excluding vowels
AAD: ASCII Adjust for Division though the names of these 2 instructions (AAM and AAD) seem to be same, there is many difference between their functions. The AAD instruction conver
BINARY TO GRAY CONVERSION
move a byte string ,16 bytes long from the offset 0200H to 0300H in the segment 7000H
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