Microprocessor20785 marksDirect Memory Access
Differentiate between interrupt based I/O and DMA based I/O. Explain based DMA operation in brief.
Differentiate between interrupt based I/O and DMA based I/O. Explain based DMA operation in brief. [5]
Aspect Interrupt Based I/O DMA Based I/O --------- CPU Involvement CPU is interrupted and handles each data transfer CPU is minimally involved; DMA controller handles transfer Data Transfer Data passes through CPU registers Data transfers directly between memory and I/O device Speed Slower; CPU o...