Q. What is the maximum number of I/O devices controlled by a single 8257 DMA Controller Chip ?
Solution:
- There are 4 channels each with 16 bit address and 14 bit counter.
- The 8257 DMA controller is designed to support up to 4 I/O devices.
- It can manage data transfers between these I/O devices and memory independently, freeing up the CPU from performing these tasks and improving the overall efficiency of data movement within the system.
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