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DMA Hardware (8237 DMAC) :
1)Processor contain HOLD/HOLD Acknowledge lines to interact with 8237
o DMAC can achieve control of ISA bus by asserting HOLD
o Processor acknowledges with HLDA
2)DRQ4 services slave controller Priorities are set as fixed
o DRQ0 highest and DRQ7 lowest
o It set at POST
o It can be reprogrammed for rotating priority
3)ISA address/data/control lines are also linked (not shown)
o It can access control registers through ports
o Each channel has a page register associated with
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Why is the capability to relocate processes desirable?
Write a MC68H12 assembly language program to find the largest number in an array of ten 8-bit numbers. The array is stored in memory locations starting at address $1100. Use branch
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#question.flow chart for a program to find out the number of even and odd numbers from a given series of 16-bit hexadecimal numbers.
how we can multiply two 8 bit number with rotation
write an assembly language program to find average of odd numbers from an array of 8 bit numbers
Memory Interface Figure: Memory Modulation design The memory of a computer contain of number of memo
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