Building a Vexpress-A9 Emulation Environment with QEMU, Custom Kernel, and BusyBox Rootfs

On a machine running Ubuntu 22.04 (with gcc 11.4.0 and host kernel 6.5.0), install QEMU: sudo apt-get install qemu qemu-system Download Linux 6.6.16 from https://cdn.kernel.org and extract the archive. Use a separate build directory too keep the source clean: cd linux-6.6.16 export ARCH=arm export CROSS_COMPILE=arm-linux-gnueabi- mkdir ../buil ...

Posted on Wed, 04 Nov 2026 16:52:07 +0000 by polson

Integrating Unix Timestamps with STM32 RTC and Backup Registers

Unix Timestamps A Unix Timestamp represents the total number of seconds that have elapsed since the Unix Epoch (00:00:00 UTC on January 1, 1970), excluding leap seconds. This value is typically stored in a 32-bit or 64-bit integer variable acting as a seconds counter. Since the counter is based on UTC, all time zones share the same counter val ...

Posted on Wed, 04 Nov 2026 16:51:26 +0000 by davidjwest

Extracting Type, Method, and Field Information from Unity IL2CPP Binaries Using IL2CppDumper

Overview When a Unity project is built using the Mono backend, the Assembly-CSharp.dll is directly accessible from the APK. If the developer hasn’t obfuscated it, tools like ILSpy can easily decompile the assembly. However, when using the IL2CPP backend, this DLL is absent. Instead, the IL2CppDumper tool can reconstruct equivalent type metad ...

Posted on Wed, 04 Nov 2026 16:51:54 +0000 by BandonRandon

Exploring .NET Reflection for Dynamic Type Operations

In the realm of .NET development, Reflection stands as a potent capability, empowering applications to inspect and manipulate their own metadata at runtime. This mechanism allows programs to discover information about types, their members (properties, methods, fields, constructors), and even dynamically create instances or invoke members that w ...

Posted on Wed, 04 Nov 2026 16:50:21 +0000 by phpmash

Efficient Connectivity DP for Grid Path Counting

Given the constraints where the grid height N is small (typically N ≤ 6) and the width M is large, a column-wise dynamic programming approach with state compression is the optimal strategy. The core challenge lies in efficiently tracking connectivity between cells across columns. Initial DP Formulation and Limitations A naive dynamic programmin ...

Posted on Wed, 04 Nov 2026 16:48:31 +0000 by tkm

Essential Python Data Analysis Tools

Data Analysis Libraries Python's native data analysis capabilities are limited, requiring third-party libraries to enhance its functionality. The key libraries we'll explore include NumPy, Matplotlib, and Pandas. Below is a brief introduction to these three libraries, with detailed usage examples covered in later sections. NumPy Python lacks bu ...

Posted on Wed, 04 Nov 2026 16:48:57 +0000 by T.Stedel

Simplifying Complex Systems with the Facade Design Pattern

Understanding the Facade Design Pattern The Facade pattern is a structural design approach that conceals the intricate internal workings of a system by exposing a single, simplified interface. Rather than forcing consumers to interact with numerous fragmented APIs or tightly coupled modules, the facade coordinates necessary operations behind th ...

Posted on Wed, 04 Nov 2026 16:47:18 +0000 by sarahk

Optimizing IN Clause Queries in MySQL: Finding the Right Number of Values

**Introduction** Do you recall the question I left hanging in my previous article "Do NULL Values Impact Query Performance?"? If not, you can revisit that piece and search for the keyword "What's the optimal number of values for an IN field query?" to find it. Let's revisit this question: How do the primary keys 6, 8, 2, and ...

Posted on Wed, 04 Nov 2026 16:45:06 +0000 by JBS103

Configuring Docker Containers with Static IPs on CentOS 7 Using Pipework and a Linux Bridge

To assign a static IP address to a Docker container on CentOS 7 using pipework, begin by setting up a Linux bridge. First, modify the physical interface configuration to attach it to a bridge. Edit /etc/sysconfig/network-scripts/ifcfg-ens33: TYPE=Ethernet BOOTPROTO=none DEFROUTE=yes IPV4_FAILURE_FATAL=no IPV6INIT=yes IPV6_AUTOCONF=yes IPV6_DEFR ...

Posted on Wed, 04 Nov 2026 16:44:28 +0000 by shumway

AJAX Fundamentals

Introduction to AJAX AJAX (Asynchronous JavaScript and XML) anables web pages to communicate with servers without reloading the entire page. This article covers practical AJAX implementation paterns. 1. Basic AJAX Implementation The following example demonstrates how to send form data to a server using jQuery's AJAX function: The correspondin ...

Posted on Wed, 04 Nov 2026 16:43:28 +0000 by KILOGRAM