#instructionsets

A very deep dive.

"This is the story of how Apple made a mistake in the ROM of the Macintosh Classic II that probably should have prevented it from booting, but instead, miraculously, its Motorola MC68030 CPU accidentally prevented a crash and saved the day by executing an undefined instruction."

https://www.downtowndougbrown.com/2025/01/the-invalid-68030-instruction-that-accidentally-allowed-the-mac-classic-ii-to-successfully-boot-up/

#Computers #Microprocessors #InstructionSets #ComputerHistory #RetroComputing

Nice. An RFC for the Linux Kernel BPF Instruction Set Architecture.

"BPF [...] is a technology with origins in the Linux kernel that can run untrusted programs in a privileged context such as an operating system kernel."

https://www.rfc-editor.org/rfc/rfc9669.html

See this write-up by @LWN on the standardisation effort from last year [ https://lwn.net/Articles/926882/ ].

#Linux #Kernel #BPF #InstructionSets

Further #introduction tags about my interests: #electronics (#ee), #materials, #creep (in the sense of cold flow!), #simulation, #instructionsets, #piezo(electrics), #vacuum, #linguistics, #Lisp, #C.