How can undefined opcodes ud0 and ud1 have parameters? https://lobste.rs/s/hzwqzv #assembly #hardware
https://devblogs.microsoft.com/oldnewthing/20261007-00/?p=112759/
#assembly
39 posts · Last used 7h
There are many good books and resources on Z80 Assembly but this programming tutorial by Patai Gergely is valuable for a couple of reasons. Gergely last worked on this in 2004 when people still cared about good work. And it covers material beyond the basics such as simple data structures and programming techniques.
The tutorial is available as a website:
https://tutorials.eeems.ca/Z80ASM/index.htm
and a single PDF that includes all the pages on the website:
https://element.zxfiles.net/DOCS/ASM/Z80ASMBL.PDF
#z80 #assembly
Faster JSON parsing with SVE2 on ARM processors via @fanf@mendeddrum.org https://lobste.rs/s/1auq61 #assembly #performance
https://lemire.me/blog/2026/09/18/faster-json-parsing-with-sve2-on-arm-processors/
Boosted by @welcome@friends.deko.cloud
Hi everyone, it's time for an #introduction on this instance. 👋 I'm Lu (he/him), I live in Leipzig, Germany and you might know me from my other account (@lu_leipzig@troet.cafe). I like to move slow, fix things, hand-write assembly and play synths. On this account, I'll toot about my electronics projects, criticism of AI and the state of FOSS. I might also participate in some AuDHD-related discussions.
#electronics #synth #synthesizer #assembly #ActuallyAuDHD
Why is the x86 undefined instruction called ud2? Why 2? https://lobste.rs/s/zbb37v #assembly #historical
https://devblogs.microsoft.com/oldnewthing/20260910-00/?p=112689
js65 - Advanced 6502 assembler with patching support based on ca65 syntax https://lobste.rs/s/24gxd3 #assembly #release
https://jsnesx.github.io/js65/
RAMINDEX and the Cortex-A76 L1I Cache https://lobste.rs/s/har5fj #assembly
https://reflexive.space/cortex-a76-l1i/
A faster way to calculate the day-of-the-week https://lobste.rs/s/ln3dao #assembly #c++ #math #performance
https://www.benjoffe.com/fast-day-of-week
'Tamil Thai Vazhthu' must come first: CM Vijay to move special resolution in Assembly today #TamilThaiVazhthu #CMVijay #Assembly #socialnewsxyz
ddisasm: A fast and accurate disassembler https://lobste.rs/s/m70pcl #assembly
https://github.com/GrammaTech/ddisasm
PS3 emulation is fast on ARM now https://lobste.rs/s/ykzv1a #video #assembly #performance
https://www.youtube.com/watch?v=-aI_XEwmKFk
I love it when you can sort of finally congeal scattered projects together into something useful.
This is a serverless, single-page x86 disassembler, that runs my marty_dasm disassembly library as wasm in your browser.
It may be the only disassembler with specific, CPU-faithful architecture modes.
You want to select 8088 and disassemble 0F as POP CS? Go for it.
#retrocomputing #assembly #emulation
Seriously, what is the large code-model even for? https://lobste.rs/s/snetpk #assembly #compilers
https://fzakaria.com/2026/07/26/seriously-what-is-the-large-code-model-even-for
