The Intel 8086 microprocessor turns 42 years old #VintageComputing @Intel @kenshirriff

Ken Shirriff posts on Twitter:

The Intel 8086 microprocessor was introduced 42 years ago today, so I made a high-res die photo. The 10-kilobit microcode ROM is visible in the lower-right corner. The 8086 started the x86 architecture that still dominates computing. The original IBM PC used the related 8088 chip.

While the 8088 received the lionshare of use in IBM PCs and clones, the 8086 had success also and was featured in the first/original COMPAQ Deskpro in 1985. The Deskpro could also run at 7.16 MHz rather than 4.88 MHz, pproviding a performance boost. (Ed. note: The Deskpro was my first desktop computer and sits on my shelf).

Ken further writes:

NEC copied the 8086 microcode for their μPD8086 processor, leading to a huge legal battle with Intel in the 1980s; NEC won because they had made a “clean-room” implementation. But as far as I know, nobody in the general public has deciphered the 8086 microcode.

See this thread for details and well as Wikipedia.

Detail of the 8086 die showing text: "intel 1979 © μCODE [i.e. microcode] 8086".


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 28,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


Maker Business — To make it through a tough business cycle, layoffs should be a last resort

Wearables — Make it pink!

Electronics — SMT Tip – Stop moving around!

Python for Microcontrollers — Python on Microcontrollers Newsletter: PyCon US, Mother’s Day, KiCad and more! #Python #Adafruit #CircuitPython @micropython @ThePSF

Adafruit IoT Monthly — IoT Pool Monitor, Edge AI, and more!

Microsoft MakeCode — MakeCode Arcade Spring Update

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — New Products 5/12/2021 Featuring Adafruit Rotary Trinkey – USB

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.