mgsouth

22 ms·

181.
by mgsouth 4y ago
Not much to tell. I was looking at maybe using an RTOS to reduce VoIP jitter. Picked RTEMS on a generic x86 PC, there wasn't a driver for the NICs we were using, so wrote a driver using a FreeBSD driver (for an unrelated chip) as a bas
182.
by mgsouth 4y ago
Waaaaayyyy back in the day (1988) it started out as "Real-Time Executive for Missile Systems" [0]. Hard-core hard-real-time. Today the "MS" stands for "Multiprocessor Systems". Heterogenous multiple processor
183.
by mgsouth 4y ago
The Contents sidebar has a category for "CARNIVEROUS". Edit: Also "NUCLEAR", "PUB GAMES", "RADIOSONDE", and of course "FART BOMBS". Curse you GP, for another rabbit hole. Edit edit: Oh and &
184.
by mgsouth 4y ago
Oops, I miscalculated the total satellite area; (meant 1e6 x 1e6 = 1e12). To keep everything else the same, replace "each with radiators 1 square kilometer" with "each with radiators of 1,000 square km."
185.
by mgsouth 4y ago
Forgive me, for I am doing an end-run around a HN rule (replying to a reply to a reply). But it seems an entertaining question... > What if you radiated a Sun's worth of energy (10^26 Watts) out of 1 square meter? * Blackbody temper
186.
by mgsouth 4y ago
Let us, per the article's title, do the math... * Total energy consumption = 10^26 watts (hope the caret comes through HN formatting) * Assume some magical generation and transport mechanisms which don't involve energy gradiants (
187.
by mgsouth 4y ago
> nft avoids having to duplicate ipv4/ipv6 rules Sometimes. # IPv4 TCP traffic ip protocol tcp reject with tcp reset # IPv6 TCP traffic (note: "6" is TCP protocol, not IPv6) meta l4proto 6
188.
by mgsouth 4y ago
There are a few issues here... 1. Depending upon context, *any* change to state (network I/O, console I/O, file I/O, environment variables, etc.) is a security vulnerability you can drive a truck through. For example: Foo is
189.
by mgsouth 4y ago
Engaging. Would read again. [directed graphs] Author has a few other interesting posts, such as musing about "approximate sorting algorithms" [no conclusions there].
190.
by mgsouth 4y ago
Actually, the CEO has commented several times that he was directing the engineers to revert. As a side note, is seems very unlikely that a company would want to treat a roll-back as a new release and first re-execute an already-run test sui
191.
by mgsouth 4y ago
Q: Did the customer get exactly the same version with the re-update? Or was a patch or revert pushed in the meantime?
192.
by mgsouth 4y ago
Sorry, no. From a technical standpoint it's ridiculous. If there's even a minimal amount of error checking, a failed update would be akin to a shotgun blast, not a laser beam. Is it theoretically possible for it to cause just one
193.
by mgsouth 4y ago
50-100 yrs between major overhaul? When's the last time you had to manually top-up or bleed air out of your circulatory system? I'd say that's impressively robust.
194.
by mgsouth 4y ago
(Regarding BeOS port:) > What finally got it to behave was a combination of [various things...]; changing to less-sensitive library routines that could handle a little corruption; ... (Insert Spock's-raised-eyebrow.)
195.
by mgsouth 4y ago
I recall it being printer-specific also. Dell laser would do it, Brother (?) wouldn't. There was even an app (Booklet Maker?) for n-up challenged printers. I imagine it's a printer-implemented feature, like duplex, with a very hig
196.
by mgsouth 4y ago
That would make for some interesting posts. "How X promotes wishful simplification," for various values of X. I imagine some common traits would be probably be "X makes simple things simple," with "it makes hard thi
197.
by mgsouth 4y ago
The site seems to have a very odd sprinkling of English headings and words. Not enough for a non-Japanese reader, and no visible option to switch to an English version of the pages, so clearly targeted Japanese-only. Is this common?
198.
by mgsouth 4y ago
I've wondered how heavy construction equipment would work. Bulldozers trailing thick power cables seems... problematic. Yes, I'm aware of huge draglines connected to power sources with cables, but they aren't very mobile and
199.
by mgsouth 4y ago
I have one of these. Registered for the recall very early on. Once in a while I get an email saying "we're working with the FDA to see you get the very best care!" According to my sleep specialist, they're most concerned
200.
by mgsouth 4y ago
New app from the creator of the fabulous Free42 app. This adds algebraic expression;, units; large, resizable, multi-line display; directories; TVM and amortization tables; 2D plotting w/ integrals and roots from points. Android and iO
201.
Plus42: An Enhanced HP-42S Calc Simulator(thomasokken.com)
4 points by mgsouth 4y ago|1 comments
202.
by mgsouth 5y ago
I'm just getting into analog electronics. Nominally, I'm trying to synthesize 90VAC @ 30mA (telephone ring signal) using buck/boost from a "reasonable" input voltage with reasonable efficiency. Not anywhere close to
203.
by mgsouth 5y ago
It appears the author agrees with you > This is the initial commit, revision 1, and has a few issues, but it works and the computer boots! It will no doubt be obvious that I am not an engineer, and I certainly don't specialise in S
204.
by mgsouth 5y ago
Some useful notes... Designing switched mode supplies is hard. I've just barely started playing with them, but it's really tough choosing component values that don't ring like a bell, a loud bell, at pretty high frequencies
205.
Ups Intl Shipping Redlining in South SF(bigmessowires.com)
1 points by mgsouth 5y ago|0 comments
206.
by mgsouth 5y ago
Leaseback. Think of the writedown! There's a _lot_ of money desperate for any kind of return. No, no, hear me out. You've got a couple of billion burning a hole in your pocket, right? And nothing that really looks unicorn material
207.
by mgsouth 5y ago
What? Was this something on the CSL (Contributed Software Library)? Don't recall anything like that... Besides... I'd expect something emulating S/3x. You could alter the system message catalog however you liked... Sounds l
208.
by mgsouth 5y ago
Wikipedia entry is Talaria Projector[0]; "Talaria" has no references to it. [0] https://en.wikipedia.org/wiki/Talaria_projector
209.
by mgsouth 5y ago
In case you're going "???"--MS-DOS and (until xx?) Windows treated some file names as special device names: CON, PRN, AUX, NUL, LPTn, COMn,...[0] And even if Windows supports (or hides) it now, no doubt ramifications linger o
210.
by mgsouth 5y ago
Um, if you can compromise "passwd" it's game over; you are root equivalent. Looking at other suids in /bin... Compromise mount, game over. Compromise su, game over. arping? ping? Dunno; they can generating normally-pro

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