This application note presents the Direct Memory Access (DMA) control, its basic set-up and operations. The document includes the usage examples of the DMA controller and the DMA Trigger Factor ...

Last time, in Part 1, we introduced somebasics behind Direct Memory Access (DMA) -why it's needed, and how it's structured and controlled. This time,we'll focus on the classifications of DMA transfers ...

一般情况下，计算机在开机时会由UEFI（Unified Extensible Firmware Interface）固件与IOMMU（Input–Output Memory Management Unit）先行创建基本防护，避免支持直接内存访问（Di ...

Now that there are embedded media processors available that can handle both MCU and DSP tasks, C programmers who are very familiar with the MCU model of application development are transitioning into ...

Transferring large blocks of data within memory as well as to and from peripherals. Direct memory access (DMA) avoids loading the CPU's register with small amounts of data from memory and storing them ...

Direct memory access (DMA) systems in computers are more powerful than you might think, and [Bruce Land] and [Joseph Primmer] have done some clever hacking to take full advantage of this on the PIC32 ...

A new technical paper titled “Rethinking Programmed I/O for Fast Devices, Cheap Cores, and Coherent Interconnects” was published by researchers at ETH Zurich. “Conventional wisdom holds that an ...

Modern computers that come with a Thunderbolt interface and run Windows, macOS, Linux, or FreeBSD are vulnerable to a range of Direct Memory Access (DMA) attacks performed by potential attackers with ...

Multicast, a technique commonly used in networking systems, allows a given processing unit to send a single data stream to multiple destinations at the same time efficiently. Typically, the switch ...

The manufacturers have issued BIOS updates to address the issues, but researchers warn DMA attacks are likely possible against a range of laptops and desktops. Vulnerabilities in Dell and HP laptops ...