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roygbiv2 commented on F-16 Falcon Strike   webchrono.pl/F16FalconStr... · Posted by u/starkparker
PonyoSunshine · 25 days ago
Woah what? Can you tell me more about Falcon 5.0? I used to play 3.0 back in the day and was a super huge fan of it.
roygbiv2 · 24 days ago
Falcon 4.0 BMS is probably the best F16 simulator out there right now and it's 'free'
roygbiv2 commented on When square pixels aren't square   alexwlchan.net/2025/squar... · Posted by u/PaulHoule
mrandish · a month ago
Good post. For anyone wondering "why do we have these particular resolutions, sampling and frame rates, which seem quite random", allow me to expand and add some color to your post (pun intended). Similar to how modern railroad track widths can be traced back to the wheel widths of roman chariots, modern digital video standards still reverberate with echoes from 1930s black-and-white television standards.

BT.601 is from 1982 and was the first widely adopted analog component video standard (sampling analog video into 3 color components (YUV) at 13.5 MHz). Prior to BT.601, the main standard for video was SMPTE 244M created by the Society of Motion Picture and Television Engineers, a composite video standard which sampled analog video at 14.32 MHz. Of course, a higher sampling rate is, all things equal, generally better. The reason for BT.601 being lower (13.5 MHz) was a compromise - equal parts technical and political.

Analog television was created in the 1930s as a black-and-white composite standard and in 1953 color was added by a very clever hack which kept all broadcasts backward compatible with existing B&W TVs. Politicians mandated this because they feared nerfing all the B&W TVs owned by voters. But that hack came with some significant technical compromises which complicated and degraded analog video for over 50 years. The composite and component sampling rates (14.32 MHz and 13.5 MHz) are both based on being 4x a specific existing color carrier sampling rate from analog television. And those two frequencies directly dictated all the odd-seeming horizontal pixel resolutions we find in pre-HD digital video (352, 704, 360, 720 and 768) and even the original PC display resolutions (CGA, VGA, XGA, etc). To be clear, analog television signals were never pixels. Each horizontal scanline was only ever an oscillating electrical voltage from the moment photons struck an analog tube in a TV camera to the home viewer's cathode ray tube (CRT). Early digital video resolutions were simply based on how many samples an analog-to-digital converter would need to fully recreate the original electrical voltage.

For example, 720 is tied to 13.5 Mhz because sampling the active picture area of an analog video scanline at 13.5 MHz generates 1440 samples (double per-Nyquist). Similarly, 768 is tied to 14.32 MHz generating 1536 samples. VGA's horizontal resolution of 640 is simply from adjusting analog video's rectangular aspect ratio to be square (720 * 0.909 = 640). It's kind of fascinating all these modern digital resolutions can be traced back to decisions made in the 1930s based on which affordable analog components were available, which competing commercial interests prevailed (RCA vs Philco) and the political sensitivities present at the time.

roygbiv2 · a month ago
> Similar to how modern railroad track widths can be traced back to the wheel widths of roman chariots

This is repeated often and simply isn't true.

roygbiv2 commented on Show HN: Z80-μLM, a 'Conversational AI' That Fits in 40KB   github.com/HarryR/z80ai... · Posted by u/quesomaster9000
roygbiv2 · 2 months ago
Awesome. I've just designed and built my own z80 computer, though right now it has 32kb ROM and 32kb RAM. This will definitely change on the next revision so I'll be sure to try it out.
roygbiv2 commented on Show HN: KiDoom – Running DOOM on PCB Traces   mikeayles.com/#kidoom... · Posted by u/mikeayles
junon · 3 months ago
Assuming that's 15 FPS that's about 80-100 Euro (sans shipping) per second of gameplay and due to most PCB fabs having a MOQ of 5 you could play 5 at a time!
roygbiv2 · 3 months ago
Yeah but just liked an overclocked gpu, there's errors on those boards so you have to throw them away and wait for the for the next revision.
roygbiv2 commented on Unofficial Microsoft Teams client for Linux   github.com/IsmaelMartinez... · Posted by u/basemi
darthcircuit · 3 months ago
It’s more incredible to me that Microsoft has different versions of teams that don’t work with each other, but are named the same thing, and that the home version of teams that doesn’t work with enterprise teams comes forcibly bundled with an pro or enterprise os.
roygbiv2 · 3 months ago
It's so fucking bizarre that there are multiple versions of the same thing, that are called the same thing but aren't the same thing!
roygbiv2 commented on UPS plane crashes near Louisville airport   avherald.com/h?article=52... · Posted by u/jnsaff2
justsid · 3 months ago
The damage on the ground is scary to look at. I think the only silver lining here is that it was "just" a sparser industrial area and there weren't any homes. I'm really curious about what the investigation will reveal in a few months. This doesn't look like a "regular" engine fire from a bird strike or so, you would normally expect the flames to come out the back and not over the wing. And at least in theory the MD-11 should be flyable with just two engines, although flames on a wing is probably "really really bad" just by itself already. Too early to speculate about what happened though.
roygbiv2 · 3 months ago
Looks like a compressor stall on number two engine two seconds into the video.
roygbiv2 commented on Show HN: A fast, dependency-free traceroute implementation in pure C   github.com/davidesantange... · Posted by u/daviducolo
raphman · 3 months ago
Honest question: why would this code clamp the reported round-trip time? By default, min = 0.05 ms and max = 800 ms [1].

           if (rtt < config.min_rtt)
                rtt = config.min_rtt;
            else if (rtt > config.max_rtt)
                rtt = config.max_rtt;
Wouldn't this hide bugs in the code or network anomalies? Replies from localhost seem to typically arrive in less than 50 µs.

Comments in an earlier version [2] make no sense to me:

            /* Use standard timersub for more accurate results */
                    if (rtt < 0)
                        rtt = 0;

                    /* Cap at reasonable maximum to handle outliers */
                    if (rtt > 1000)
                        rtt = 1000;

[1] https://github.com/davidesantangelo/fastrace/blob/5b843a197b...

[2] https://github.com/davidesantangelo/fastrace/commit/79d92744...

roygbiv2 · 3 months ago
Because it's AI generated.
roygbiv2 commented on Phone numbers for use in TV shows, films and creative works   acma.gov.au/phone-numbers... · Posted by u/nomilk
nomilk · 3 months ago
> website with a list of payphone numbers ... my home phone number was one of them

Did you find out how this came to be, or just random typo?

Curious what the purpose of calling a pay phone is? (wasn't possible in my country)

roygbiv2 · 3 months ago
There was once an application, long gone and probably short lived, that let you ring payphones for free over the internet. Me and my mates had a great time phoning up times square, a pub in Australia and other places chatting to randoms.
roygbiv2 commented on A worker fell into a nuclear reactor pool   nrc.gov/reading-rm/doc-co... · Posted by u/nvahalik
dlcarrier · 4 months ago
Mosquitos bite with their nose.
roygbiv2 · 4 months ago
Oh I thought I couldn't hate them anymore and I learn this. My leg currently has large hives on it from multiple bites, the antihistamines I have are doing bugger all.
roygbiv2 commented on MinIO stops distributing free Docker images   github.com/minio/minio/is... · Posted by u/LexSiga
smartbit · 4 months ago
Here an S3 compatibility table https://garagehq.deuxfleurs.fr/documentation/reference-manua... comparing

  - GarageFS 
  - OpenStack Swift
  - CEPH Object Gateway Rados
  - Riak CS
  - OpenIO

roygbiv2 · 4 months ago
I'm currently testing for alternatives of minio on my homelab. Ceph was nice, lots of bells and whistles, built in support for virtual IPs is excellent, but on my aging hardware it was using 10-15% CPU in my VM while idle. Currently benchmarking garagefs, scales very well with core count and multi node set up is a breeze.

u/roygbiv2

KarmaCake day138November 20, 2019View Original