#kenshirriff — Public Fediverse posts

Inside a Mystery 1980s Filter IC Featuring Switched Capacitors

https://fed.brid.gy/r/https://hackaday.com/2026/10/11/inside-a-mystery-1980s-filter-ic-featuring-switched-capacitors/

Minimalismo é isso, o resto é conversa: processador de UM bit!

https://retropolis.com.br/2026/09/23/minimalismo-e-isso-o-resto-e-conversa-processador-de-um-bit/

#MundoRetro #chip #CircuitoIntegrado #EngenhariaReversa #KenShirriff #MC14500B #Motorola #p0rn

The Adder at the Heart of Intel’s 8087 FPU

https://fed.brid.gy/r/https://hackaday.com/2026/06/16/the-adder-at-the-heart-of-intels-8087-fpu/

Spacelab’s Mitra 125 MS

https://fed.brid.gy/r/https://hackaday.com/2026/05/24/spacelabs-mitra-125-ms/

Ah yes, a gripping tale of corporate rise and fall told through the lens of #obsolete technology—because nothing screams "captivating" like old computer chips and #aerospace #trivia 🚀💾. Ken Shirriff's blog: come for the IC reverse engineering, stay for the riveting history of things no one asked for. 📚🔍
https://www.righto.com/2026/03/ibm-4-pi-computer-history.html #corporatehistory #tech #KenShirriff #reverseengineering #HackerNews #ngated

Repórter Retro 114

https://retropolis.com.br/2025/05/28/reporter-retro-114/

#ReprterRetro #AdrianBlack #AmstradCpc #AppleII #arm #AtariSt #AtariXE #Atlantis #CarlcioCordeiro #ClaudioPicolo #ColossalCaveAdventure #CommodorePET #CPM #CuriousMarc #DiPDoT #DisqueteDe8 #Doom #GameWatch #Homebrew #IBM #Jogos #KenShirriff #LaCoCoStrangiato #Laptop #LeiDeMoore #Linux #MatraAlice #MC1000 #microNOVA #microsoft #MSDOS #MSX #Nintendo #PCAT #PhintageCollector #rels #RetroCollective #RetroKrazy #RetroRe

Mais um dia de passagem do garbage collector

https://retropolis.com.br/2025/05/19/mais-um-dia-de-passagem-do-garbage-collector/

#MundoRetro #6502 #BenEater #CP437 #DEC #GarbageCollector #IBMPC110 #Intel80386 #KenShirriff #LLaMa2 #MicrosoftBASIC #MSDOS #PDP11 #RaymondChen #TCPIP #Venix

🤓 Ken Shirriff's blog is back with another thrilling installment of "Things No One Asked For," this time diving into the prefetch queue of a processor from the Reagan era. 🎉 Because, clearly, what the world was missing is a deep dive into 16-byte queues from 1985 that even your toaster has outpaced. 🚀
http://www.righto.com/2025/05/386-prefetch-circuitry-reverse-engineered.html #KenShirriff #ThingsNoOneAskedFor #ProcessorHistory #RetroTech #1985Tech #HackerNews #ngated

The Convoluted Way Intel’s 386 Implemented its Registers - The fact that modern-day x86 processors still pretty much support the same operati... - https://hackaday.com/2025/05/05/the-convoluted-way-intels-386-implemented-its-registers/ #reverseengineering #classichacks #kenshirriff #x86

The Convoluted Way Intel’s 386 Implemented its Registers https://hackaday.com/2025/05/05/the-convoluted-way-intels-386-implemented-its-registers/ #ReverseEngineering #classichacks #kenshirriff #80386 #x86

Sabadaço do Garbage Collector de Retrópolis

https://retropolis.com.br/2025/04/05/sabadaco-do-garbage-collector-de-retropolis/

#MundoRetro #Commodore #Fax #FitaCassete #GarbageCollector #GravadorCassete #KenShirriff #Lotus123 #mainframe #MSDOS #PDP11 #Pentium #UNIX #Windows98

Inside the F-4 Attitude Indicator https://hackaday.com/2024/09/30/inside-the-f-4-attitude-indicator/ #TransportationHacks #artificialhorizon #attitudeindicator #kenshirriff #jetfighter #Teardown

Inside the F-4 Attitude Indicator - [Ken] recently obtained an attitude indicator—sometimes called an artificial horiz... - https://hackaday.com/2024/09/30/inside-the-f-4-attitude-indicator/ #transportationhacks #artificialhorizon #attitudeindicator #kenshirriff #jetfighter #teardown

I am posting this fascinating write-up by Master Ken so I can find it later if I want to dig into the details further. It connects labor, semiconductor and weaving history to follow a common thread.

https://www.righto.com/2024/08/pentium-navajo-fairchild-shiprock.html

#weaving #KenShirriff #Navaho #Intel

Rodando novamente o garbage collector

https://retropolis.com.br/2024/08/08/rodando-novamente-o-garbage-collector/

#MundoRetro #Asianometry #Cray #DEC #GarbageCollector #IBM #KenShirriff #LunarLander #M2 #mainframe #Motorola #NECPC9801 #PC98 #Pocket386 #SeymourCray #Tenox #VintageApparatus #VT220 #WRP

Rodando o garbage collector

https://retropolis.com.br/2024/07/11/rodando-o-garbage-collector/

#MundoRetro #30Pinos #68000 #80x86 #DEC #DECstation #fpga #Intel80486 #Intel8088 #KenShirriff #memria #MSDOS #neozeed #os2 #Pentium #RaspberryPi #RP2040 #SIMM #WindowsXP #Workstation

Ken Shirriff arregaça o Intel 80386

https://retropolis.com.br/2024/02/11/ken-shirriff-arregaca-o-intel-80386/

#MundoRetro #Intel80386 #KenShirriff

Uma coleção de notas RISCadas

https://retropolis.com.br/2023/10/24/uma-colecao-de-notas-riscadas/

#MundoRetro #AlphaAXP #IntelI960 #KenShirriff #PowerPC #RISC #RS6000 #WindowsNT

Uma coleção de notas x86

https://retropolis.com.br/2023/10/23/uma-colecao-de-notas-x86/

#MundoRetro #BIOS #Gotek #IBM5150 #IbmPs2 #Intel80386 #Intel8088 #KenShirriff #neozeed #os2 #scsi

[Ken] Looks at the 386

[Ken] Looks at the 386

hackaday.com/2023/10/16/ken-lo…

#retrocomputing #80386 #intel #kenshirriff #hackaday

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16 Kbit DRAM Gives Up Its Secrets - [Ken Shirriff] is looking inside chips again. This time, the subject is the MK4116... - https://hackaday.com/2023/09/26/16-kbit-dram-gives-up-its-secrets/ #retrocomputing #kenshirriff #dram

This came up (tangentially) on Hacker News today, but this video of Ken Shirriff going over the Xerox PARC Alto is fascinating.

https://www.youtube.com/watch?v=9H79_kKzmFs

#retrocomputing #KenShirriff #PARC #Alto

Finding Undocumented 8086 Instructions Via Microcode - Video gamers know about cheat codes, but assembly language programmers are often i... - https://hackaday.com/2023/07/17/finding-undocumented-8086-instructions-via-microcode/ #undocumentedinstructions #retrocomputing #kenshirriff

Great new reverse engineering on the 8086 of something we now take for granted: division by #KenShirriff - https://www.righto.com/2023/04/reverse-engineering-8086-divide-microcode.html

String Operations the Hard(ware) Way - One of the interesting features of the 8086 back in 1978 was the provision for “st... - https://hackaday.com/2023/04/07/string-operations-the-hardware-way/ #retrocomputing #kenshirriff

Silicon Sleuthing: Finding a ancient bugfix on the 8086

#retrocomputing #8086 #chipdecapping #kenshirriff #polysilicon #reverseengineering #silicon #hackaday
posted by pod_feeder_v2

Silicon Sleuthing: Finding a ancient bugfix on the 8086 - Few CPUs have had the long-lasting influence that the 8086 did. It is hard to beli... - https://hackaday.com/2022/11/28/silicon-sleuthing-finding-a-ancient-bugfix-on-the-8086/ #reverseengineering #retrocomputing #chipdecapping #kenshirriff #polysilicon #silicon

Silicon Sleuthing: Finding a ancient bugfix on the 8086

https://hackaday.com/2022/11/28/silicon-sleuthing-finding-a-ancient-bugfix-on-the-8086/

#reverseengineering #Retrocomputing #chipdecapping #kenshirriff #polysilicon #silicon #8086

Exploring Texas Instrument’s Forgotten CPU - Texas Instruments isn’t the name you usually hear associated with the first microp... - https://hackaday.com/2022/09/23/exploring-texas-instruments-forgotten-cpu/ #texasinstruments #retrocomputing #kenshirriff #intel #cpu #ti

The MOS 7600 Video Game Chip Gives Up Its Secrets - A good chip decapping and reverse engineering is always going to capture our inter... - https://hackaday.com/2022/09/07/the-mos-7600-video-game-chip-gives-up-its-secrets/ #retrocomputing #kenshirriff #videogame #mos7600 #tvgame #cpu

virtual HIMARS teardown https://twitter.com/kenshirriff/status/1552723519087198208 /via #kenshirriff #himars #fckptn

Can You Hear Me Now? Lunar Edition - Despite what it looks like in the movies, it is hard to communicate with astronaut... - https://hackaday.com/2022/05/16/can-you-hear-me-now-lunar-edition/ #kenshirriff #apollo #space

The Apollo Digital Ranging System: More Than Meets The Eye - If you haven’t seen [Ken Shirriff]’s teardowns and reverse engineering expeditions... - https://hackaday.com/2022/04/25/the-apollo-digital-ranging-system-more-than-meets-the-eye/ #kenshirriff #rangefinder #radiohacks #apollo #space #radar #nasa #jpl