PRPatrick Ryaninleetcodebytes.hashnode.dev·1d ago · 2 min readWhy *= 2 is slower than = col * 2 in PandasThis problem looks trivial, but I got curious about what different Pandas update strategies actually cost. I separated the benchmark into two layers: Warm in-memory execution — how fast each Pandas u00
RPRavidu Priyankarainravindu-priyankara.hashnode.dev·Jun 20 · 9 min readSqueezing Bytes: How I Optimised an eBPF Driver in Falco1. How I Found This Opportunity I wanted to make my first open source contribution, so I decided to fork a few eBPF projects — one of them being falcosecurity/libs. After compiling and running Falco, 00
AMAsad Mehmoodinasad0x7.hashnode.dev·Jun 16 · 7 min readPart 1: x86 Architecture for Exploit Developers — Program Memory, the Stack, and CPU RegistersTL;DR — A 32-bit Windows process lives in 0x00000000–0x7FFFFFFF. The stack is a per-thread LIFO area (PUSH/POP) holding arguments, locals, and return addresses, bundled per call into a stack frame (pr00
AWAlan Westinalan-west.hashnode.dev·May 2 · 6 min readHow to Build and Run Microsoft's Newly Open-Sourced DOS Source CodeSo Microsoft just dropped what they're calling the earliest DOS source code ever discovered, and naturally, my first instinct was to try building it. If you had the same idea and hit a wall of cryptic assembler errors, you're not alone. Here's how I ...00
MMMartin Malýinblog.asm80.com·Apr 12 · 9 min readI Like AssemblerIt was the first language I "learned." I was twelve, didn't have a computer, so I learned on paper. And apparently it worked, because a year later, when I finally sat down at a machine, my first progr00
MMMartin Malýinblog.asm80.com·Mar 28 · 10 min readLive Coding in ASM80: run your assembly without leaving the editorHere's a Z80 loop. Open ASM80, paste it in, and just watch. ; <LIVESTART maxT=500000> ; <SEED A=0x00, B=10, HL=0x4000> loop: add a, b djnz loop ; <TRACE A, B> 00
FPFredrik Paulininfredrikpaulin.hashnode.dev·Feb 4 · 7 min readBuilding EMU64: A Headless Commodore 64 Emulator for Modern TestingWhen you're developing an assembler for vintage hardware, you need a way to test your output. Running generated binaries on original hardware isn't practical for automated testing, and full-featured emulators like VICE are overkill when all you need ...00
FPFredrik Paulininfredrikpaulin.hashnode.dev·Feb 2 · 11 min readBuilding ASM64: A Modern 6502 Cross-Assembler in CIntroduction The Commodore 64 refuses to die. Four decades after its release, a passionate community continues to push the hardware to its limits, and 2026 marks an exciting milestone: the Commodore 64 Ultimate is finally shipping. This modern reimag...00
SRSukalyan Royinsukalyanroy.hashnode.dev·Jan 16 · 12 min readNand2Tetris Part 1: HardwareAfter many many months and years of procrastinating, i finally started this book, along with a friend from college, both of us doing it separately at our own pace. And Atleast for the first few chapters so far, it has been a torturous but fun experie...00
MSMohammed Sohailingas-asm.hashnode.dev·Jan 6 · 4 min readHow to Write a Hello World Program in Assembly LanguageNow, let's look at the traditional "hello, world" program in programming. I'm not a big fan of it, but it's basic and helps us see the output on the terminal for the first time, so it's fine here. Below is a simple C++ code example, which is consider...00
