operating systems - How does a DMA controller work? - Software ...
Feb 8, 2015 · (I can't understand why we need a DMA controller for data transfer between the disk and the main memory, so guess that I miss something important to understand the …
memory - What does "data bus control" mean? - Software …
Oct 5, 2017 · This video mentions the following: What does it mean for the DMA controller to be granted the data bus control, does that mean the CPU cannot use the bus to access memory …
Why do we have to wait for I/O? - Software Engineering Stack …
Sep 8, 2015 · The DMA controller/chip (Direct Memory Access) allows programmed I/O but having somebody else do it! With DMA the CPU only has to initialize a few registers and it's …
hardware - Are "Control register" and "Status register" and "Data ...
May 30, 2017 · I am studying about Memory-Mapped I/O from here. I have read the following: From the CPU's perspective, an I/O device appears as a set of special-purpose registers, of …
hardware - How data is accessed in Memory-Mapped I/O?
May 31, 2017 · This is an example of Memory-Mapped I/O: So basically you access the device controller registers through memory. Now my question is, when you for example write to the …
Whole-program optimization - Software Engineering Stack Exchange
May 1, 2018 · For example, if code places an some data into a buffer and passes its address to an external function that writes that to a volatile-qualified DMA controller register, the cross …
theory - How often do CPUs make calculation errors? - Software ...
Now, if you consider the chips sets that are built into the processors or at least the same packaging such USB controllers, TSEC, DMA controller or memory controller then there are …
Is it necessary to have DTO to domain entity mapping always?
May 22, 2020 · 2 I am working on a WebAPI application which follows the layered approach like Controller > Service Layer > Repository Layer > Entity Framework Core (SQL / Cosmos) The …
architecture - Separation of concerns and other best practices …
As long as Services are loosely coupled with Controllers and are more representation of business behavior than just second part of the Controller. Is there a taboo against just crafting an …
Why is it necessary for every new api to be async?
Aug 17, 2019 · is creation of threads for async code going to impact performance? No. Although some API do actually need to block on a Thread – and I think that is the case for listening on a …