On Christmas Eve 2017, my old friend Andre Kobel wrote to me with some unfortunate news that Jim Ready had passed away. He knew I was visiting the US at the time and asked if my schedule would allow me to attend the memorial service. This news was truly shocking! I had seen Jim at the end of 2016 and presented him with my new book, "Chronicles of Embedded Operating Systems,"
In operating systems, interrupts are a crucial component. When certain unexpected situations require host intervention, the machine can automatically stop the currently running program and switch to a program that handles the new situation. After processing, it returns to the original paused program to continue running.
With an interrupt system, polling for events can be avoided, which improves system efficiency.
Typically, in a system, interrupt control is divided into three parts: modules, interrupt controllers, and processors.
The module usually controls
Recently, I received something quite interesting, a set-top box. There’s not much to say about the set-top box itself, but the chip it features is something I’m very curious about. It uses the RK3528A SoC, equipped with four Cortex-A53 cores, with a frequency of up to 2.0GHz, and a Mali 450 MP2 GPU.
After testing, it outperforms the Allwinner H618 in various aspects.
Many people know about the Allwinner H618, which is
1) Download UEFI:
