Lecture 17 | Direct Memory Access | DMA Operation | 8237 Programmable DMA Controller | HOLD | HLDA

In this lecture, we will discuss the Direct Memory Acess (DMA) Technique and will understand the functionality of HOLD and HLDA pins available on microprocessor 8085 for handling the DMA operation. We will also understand the architecture and working of a Programmable DMA controller i.e., 8237 -- NIT Srinagar