The OS normally protects against accessing sensitive parts of the memory space, but DMA bypasses the OS, rendering such protections useless.

Posted in Microcontrollers Tagged code, Direct Memory Access, dma, embedded ← Ultra-Low Power Soil Moisture Sensor Spy Tech: Build Your Own Laser Eavesdropper → ...

DMA allows input-output (I/O) devices to access memory without CPU involvement. Bypassing the Operating System (OS) by providing direct high-speed access to the system’s memory improves efficiency for ...

Ever wondered what is direct memory access? In today’s guide, we’re going to take a closer look at DMA and show you how it works.

As the name suggests, DMA attacks enable a potential attacker to read and write memory off a victim system directly, bypassing the main CPU and OS. By overwriting memory, attackers can gain control ...

What is an interrupt? How does operating system handle interrupt? In what cases will interrupt happen? What is caching? How is it used? What is direct memory access? What are the advantages of ...