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Michael's blog about teaching, hardware, software and the things in between

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Site URL: multicores.org/blog/index.html

Feed URL: multicores.org/blog/feed.rss

Posts: 10

Followers: 1

Scopetrex

http://multicores.org/blog/scopetrex.html

Published: February 25, 2024 18:31

Since I started hacking on computer hard- and software in the 1980s, Motorola's 6809 processor is one of my favorite 8-bit CPUs. The 6809 is the last generation of Motorola's 8-bit CPU family, which started with the 6800 in 1974 and also was used in a…

Lisp in Small Processors

http://multicores.org/blog/lisp-in-small-processors.html

Published: February 25, 2024 17:51

While AI is all the rage again, the previous AI wave was focusing on languages like Lisp and Prolog and even built hardware with special processors optimized to execute Lisp code, made by companies such as Symbolics, Lisp Machines, Inc., and the Explorer…

Computer History

http://multicores.org/blog/computer-history.html

Published: April 5, 2023 11:10

As some of my regular readers (if these exist...) may already know, I have a certain fondness for old computers and their history. In February, members of the German Computer Society's SIG on Computer History met at the University of Bonn. We had a…

One Year Later...

http://multicores.org/blog/one-year-later.html

Published: April 3, 2023 21:28

Big news, a bit late. Almost exactly one year ago (in late March 2022), I returned to Germany to start my new job as full professor and head of the System Programming research group at Bamberg University in the Faculty Information Systems and Applied…

Exploring Binary Translation on Apple Silicon (part 1)

http://multicores.org/blog/exploring-binary-translation-on-apple-silicon-part-1.html

Published: November 21, 2020 11:02

You have probably read about Apple's new Macs which switched from Intel CPUs to Apple's new in-house designed M1 "Apple Silicon" chip, which is based on the 64-bit ARM (Aarch64) instruction set architecture (ISA). When a company does a transition like…

RISC V operating systems

http://multicores.org/blog/risc-v-operating-systems.html

Published: September 5, 2020 21:56

Some of my master project students will work on porting different operating systems (Oberon, Plan 9 and Inferno) to 32-bit RISC V-based systems. The limitation to 32-bit means that it should be possible to run the ported systems on small FPGA-based boards,…

Tiny computers are great!

http://multicores.org/blog/tiny-computers-are-great.html

Published: September 5, 2020 21:35

So far, I was using my trusty old Macbook 12" from 2015 as my main office computer, still running MacOS X High Sierra (I don't agree with Apple's decisions to dumb and lock down the more recent versions of what they now call macOS). However, the Macbook is…

Fifteen minutes of (Internet) fame

http://multicores.org/blog/fifteen-minutes-of-internet-fame.html

Published: September 5, 2020 20:41

Since my previous post on the bare-metal Smalltalk-80 version I built, a number of things have happened. First, the bare-metal runtime environments I used were rather dated; they did neither support more recent Raspberry Pi models than those based on the…