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oliviersca

20 karma · joined March 19, 2020

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oliviersca··on I made Zig compute 33M satellite positions in 3 seconds
Very interesting ! As a newbie in astro-computation, do you have any books or paper to recommend ? Thanks
oliviersca··on The Lucas-Lehmer Prime Number Test
For those who enjoy burning cpu cycles ! m1277 = 2 ^ 1277 - 1 is not prime. It easy to check it with the Lucas-Lehmer test. But we don't know any of its divisors, which is quite fascinating.
oliviersca··on Only on Nantucket: The Curious Case of the "Stolen" Mercedes
Nantucket ... Nantucket ... Ooooch, back to 1990s ... clipper ... xBase compiler ... Nostalgia ... Sorry, excuse me ! ;-)
oliviersca··on Thomas E. Kurtz has died
I wrote my first line of BASIC in 1976, if I remember correctly! I was 15 years old, and my dad and I went to a trade fair. There was an IBM booth there. A man invited me to try a moon-landing game. It was on an IBM 5100. I asked my dad what happened to the characters that scrolled off the top of the screen! Since he wasn’t at all into tech, he asked the IBM engineer to explain it to me. And that’s when I knew it was my thing! I wrote my first few lines of BASIC right there! The following year, there was a Hewlett Packard booth where an HP-9825A (I think?) was drawing Lissajous figures on a plotter. I was mesmerized! The next year, I start working during my holidays to buy an HP-25. The year after that, I got a TRS-80 Model 1 Level II and started programming it in BASIC. I didn’t know much at the time. I even bought the Editor/Assembler, thinking it would increase the screen resolution! After that, it was an Atari ST (with Megamax C and GFA BASIC), and then PCs with a whole variety of languages ...

What has always impressed me is that some people managed, in just a few days, weeks, or months, to invent languages used by millions of people, sometimes for their entire lives! What an impact!

Mr. Kurtz, you may not have created the best language, but what you did create brought joy and inspired a whole generation of young programmers. Joy that, I feel, has somewhat faded today. Unless you’re coding in Rust!

Thank you, Mr. Kurtz!

oliviersca··on Z80 Product Line Z84C00 End of Life / Last Time Buy [pdf]
You are not alone! I ordered 5 cpus from RS yesterday. ;-) For what ? I do not know exactly. Rebuilding my first TRS-80 perhaps when I will be retired ? I spent so many years programming on this machine. As I didn't have enough money to buy floppy disk drives, I did everything on tape, with an oscilloscope in the way, to properly adjust the treble and bass to have a good square signal! During eight years ! Yes, it's definitely nostalgia. Nostalgia for a time when we tried to push technology to the limit to solve small problems, without having to manage dependencies, writing unit tests, doing upgrades ... Time when each computer has its own personality ...
oliviersca··on Trs80gp – A TRS-80 Emulator
Or better: 10 PRINT "TRS-80! ";

To get a very nice scrolling effect ! ;-)

oliviersca··on Shortage of Respirators Covid-19
I found this project: https://opensourceventilator.ie/