1
The End of an Athlon
When I was researching the mess related to strange and poorly documented CPUID bits in the Athlon MP and XP processors , I had to swap a lot of CPUs. This was uneventful in most cases… but only most.
OS/2 Museum
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Visit os2museum.com → On Hacker News Sep 2014 – Aug 2026
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2
IBM Blue Lightning: World’s Fastest 386? (2014)
One of the OS/2 Museum’s vintage boards is a genuine Made in U.S.A. Alaris Cougar. These boards were produced by IBM for Alaris and are a bit unusual: There’s a small IBM DLC3 processor in plastic package soldered on board, and there’s also a Socket 2 which accepts regular 5-Volt 486DX/SX processors or a Pentium…
3
A Sound Card Before Its Time
A mysterious full-length sound card recently arrived at the OS/2 Museum. It was clearly manufactured by IBM in 1985, and sports a 20 MHz Texas Instrument TMS32010 DSP (the DSP is the large black DIP chip near the lower left corner, not the ceramic gold cap chip).
4
The Sad End of Intel Desktop Boards
As previously discussed on this blog, Intel decided to quit the desktop board business in 2013. What has not been discussed is how Intel treated the buyers of the last generation (i.e. 8-series Lynx Point chipsets) of those boards. Since I have now acquired two of those boards, DZ87KLT-75K and DQ87PG, I had an…
5
VME Broken on AMD Ryzen
That’s VME as in Virtual-8086 Mode Enhancements, introduced in the Intel Pentium Processor, and initially documented in the infamous NDA-only Appendix H.
6
The Secret History of ATAPI
The other day I asked myself a seemingly trivial question: What was the first ATAPI CD-ROM drive and when was it available? Given that ATAPI was a major technology which instantly obsoleted all proprietary CD-ROM interfaces and made SCSI much less desirable, one might expect that there would have been some press…