Author Archives: Michal Necasek

Spot the Fakes

Would you believe that besides all the other Made in China fake brand-name items, there are also fake memory modules? Of course you would! At least Kingston and Samsung modules have been seen in the wild; the Kingston ones are … Continue reading

Posted in DDR RAM, Fakes | 15 Comments

IBM XENIX 1.0 Incompatibility Details

Some time ago I wrote about IBM PC XENIX 1.0 and why it won’t work on 386 and later processors. Thanks to a kind reader, I’ve been able to analyze the object files used to link the kernel, and I believe … Continue reading

Posted in 286, 386, Microsoft, Xenix | 18 Comments

Top of the Class 478

So I have that old Intel D865PERL board, which is a Socket 478/AGP board. There’s a 3.2 GHz Northwood in it but of course I was wondering, what’s the fastest CPU this board supports? And it turns out to be a … Continue reading

Posted in Intel, PC hardware, PC history, Pentium 4 | 3 Comments

More Peripherals

Remember this post from a while ago? Several new peripherals have turned up, but what are they? This time, the manufacturer names vanished together with the model numbers, but it shouldn’t be too hard. Do you know these peripherals? PS: … Continue reading

Posted in MIDI, Sound | 11 Comments

Shiniest x86 Chip

While there have been many shiny new chips in the metaphorical sense, x86 (and x87) chips have never been known to be literally shiny. The typical packaging is ceramic or some form of brushed metal, and neither of these surfaces is … Continue reading

Posted in 386, C&T, PC hardware | 6 Comments

Finally Free

For a while I’ve been toying with the idea of buying the full official MIDI specification, but never went through with it. Not so much because of the cost ($100 for the core spec) but because of the hassle. Only … Continue reading

Posted in Documentation, MIDI | 6 Comments

Gravis Ultras

While researching 1990s sound cards with wavetable synths, I came across an interesting resource called Rich Heimlich’s Patch Set Overview, namely issue #5 from July 1995. When I tried to unearth older issues of same, I stumbled upon a curious … Continue reading

Posted in Creative Labs, Internet, PC history, Sound | 5 Comments

Getting Organized, Finally

After years of looking for a good storage solution for 386 chips, I accidentally stumbled upon it: This is a relatively modern CPU tray, designed for—I believe—Socket G processors, It turns out that old ceramic PGA 386s fit in the … Continue reading

Posted in 386, PC hardware | 10 Comments

Tahiti + Rio = Monterey

The talk is, of course, about Turtle Beach sound cards. I finally got hold of a 1994 Turtle Beach Rio daughterboard which came mounted on an ISA sound card. On closer inspection the card turned out to be a Turtle … Continue reading

Posted in MIDI, Sound, Wave Blaster | 16 Comments

Mystery NetBurst

Some time ago, a mysterious CPU showed up at the OS/2 Museum: It is a Socket 775 CPU with a Pentium 4 label and the following markings: 3.73 GHZ/1M/1066/A4. In other words, 3.73 GHz clock speed, 1 MB L2 cache, … Continue reading

Posted in Intel, Pentium 4 | 20 Comments