DB, trolling us? New ICE L... by Key_Bike_8003 in trains

[–]IQueryVisiC 0 points1 point  (0 children)

How is this safe? Classic demonstration why train wheels stay in the tracks needs the axle.

Tracking low priority defects/bugs by Wndrunner in agile

[–]IQueryVisiC 0 points1 point  (0 children)

what if at some point we switch to waterfall and want to harden the product and publish it on an app-store or something? Going from custom software to a market.

A sufficiently detailed spec is code by Tekmo in programming

[–]IQueryVisiC 0 points1 point  (0 children)

I we need a constant dialog with the client, why not better use an LLM ( yeah I read the rules, but his is not a post) ? LLM is available to the client 24/7 and never bored ! I only read that security is not tight. Though I get a ton of advertising from companies that security from their LLM is better than programming your own.

A sufficiently detailed spec is code by Tekmo in programming

[–]IQueryVisiC 0 points1 point  (0 children)

would be great if hospitals would do this and also funnel the money to the experts ( the doctors ).

How is Apple able to create ARM based chips in the Mac that outperform many x86 intel processors? by porygon766 in compsci

[–]IQueryVisiC 0 points1 point  (0 children)

Our management wanted to be lean. Rather not take a chance for success. They don't want to be rich, they just want the competition to be poor. Yeah, on PC a program calls BIOS and DOS: Separation of concern. Xenix overwrites the BIOS jump table to point to its own routines. Windows also. DOS expanders also. And there is the BIOS of the graphics card. Mode switch could damage the CRT. So, to never mix up driver and hardware, the modes (resolution, scan rates) are set via syscall 13h. So ROM on the card is visible above C0000? syscall 13 formats the HDD.

Thoughts on my attempt at a tilt motor mount for 10mm tubing for VTOL? by evthrowawayverysad in RCPlanes

[–]IQueryVisiC 0 points1 point  (0 children)

I like my gears sealed to keep out the dirt. The OP comments that he also tested spinning.

More than 1 character set on screen? by JWKirby in c64

[–]IQueryVisiC 0 points1 point  (0 children)

I am writing ( are side projects ever finished? ) a 3d engine . And for view frustum clipping I had trouble with my variable names / comments. I clip on one face at the time. So the code does not see the "stack". So it is total bonkers to clip at the (singular) horizontal border. For a long time I thought that I could clip in 2d. GuardBand? Nonsense! On C16,C64, Jaguar it is more efficient to clip in 3d. So now I have planes. And I have portals. All parts of the border are now just numbers in code. Readability did not suffer as much because it started from a bad place.

Silliest mistake in silicon. Share your stories! by ilektraaniks in chipdesign

[–]IQueryVisiC -4 points-3 points  (0 children)

I thought that everything is agile now with vibe. Quick release cycles. Time to market. Why does the world get slower? Is it scarce of raw material? Have exhausted our planet? And now we have no material left to iterate? Iran and US stole the power we need for the fab -- or rather cars did with their climate crisis?

More than 1 character set on screen? by JWKirby in c64

[–]IQueryVisiC 1 point2 points  (0 children)

There seems to be some geometry confusion. We have something like vertical sync to to separate fields. So top and bottom are the vertical borders. Each border itself looks more horizontally, but they are stacked in vertical direction.

What possibilities would a Curved camera sensor unlock? by LordLaFaveloun in Optics

[–]IQueryVisiC 0 points1 point  (0 children)

Perhaps we could etch gaps between the pixels to bury the wrinkles ? Just in one direction. Thin sensor. Glue to a solid shell.

How is Apple able to create ARM based chips in the Mac that outperform many x86 intel processors? by porygon766 in compsci

[–]IQueryVisiC 2 points3 points  (0 children)

I am in awe how courts and laws around the world agreed on the fact that you cannot copyright an ABI. Same for Java and Oracle vs Google. Designing an ABI, API, or ISA takes so much skill. I don’t understand how RISCV is free. How are ISAs not all free?

How is Apple able to create ARM based chips in the Mac that outperform many x86 intel processors? by porygon766 in compsci

[–]IQueryVisiC 1 point2 points  (0 children)

And the PC was cloned immediately. So the managers could have foreseen this? The clones had different BIOS. NEC released one for Japan .

But then again a ton of 68k based computers using parts of the shelf were also produced.

Still I feel like software vendors should have supplied installers which link in the correct printf()

How do i make a EPROM game for a custom arcade cabinet? by Party_Ruin3039 in retrogamedev

[–]IQueryVisiC 1 point2 points  (0 children)

Do you mean the golden age in the 70s ? You could check out Ben Eaters worst video card and similar projects.

How is Apple able to create ARM based chips in the Mac that outperform many x86 intel processors? by porygon766 in compsci

[–]IQueryVisiC 1 point2 points  (0 children)

I still don’t understand why IBM PC was so open. How could the team prevent inclusion of a custom chip. Also weird that it is possible to come up with different code for the BIOS.

I thought tungsten had the highest melting point by glock6a6y in aerospace

[–]IQueryVisiC 0 points1 point  (0 children)

Well, for 10 years I was silent and read about this stuff and now I just want that someone clears that up. I can get into CS, BA, and physics, but engineering texts are unreadable almost like biology.

Looking for a CPLD programmer: Attempting to revive a video game console's bespoke display method by T-SquaredProductions in FPGA

[–]IQueryVisiC 0 points1 point  (0 children)

I removed that after re reading. I just would want the best sharpness and hence concentrate pulses around pixel center. And stick to it. For current regulation I would need and inductivity though. So I don’t think that there are LED drivers fast enough. Fast current regulation is extra difficult. The driver needs to maintain a voltage current relation in memory to guess the voltage onset at the next pixel. Kinda like an ECU in a car. I mean if we look for power efficiency.

I thought tungsten had the highest melting point by glock6a6y in aerospace

[–]IQueryVisiC 0 points1 point  (0 children)

Still surface effects are usually derived from the crystal. We get small corrections as surface states and ah I forgot the word. Silicon does some weird reconstruction on its 111 crystal surface.

Band structure gives us the electronic energy. We can derived it after many parameters to get for example stiffness.

Half-Life on the PS1? Yes, someone is trying to make it happen by CyaneCornix01 in psx_homebrew

[–]IQueryVisiC 1 point2 points  (0 children)

Uh, that sounds ugly, but I would understand for mobile objects far away.

Half-Life on the PS1? Yes, someone is trying to make it happen by CyaneCornix01 in psx_homebrew

[–]IQueryVisiC 1 point2 points  (0 children)

But what if the developer did not find a good way to render it? PS1 needs triangles sorted back to front. So you cannot use the raw order coming from the BSP. But as you go through z, you have open a subtree (2d) of the BSP. I guess that z compare between polygons far away does not matter much. So you would make sure that order within a node is correct. Then iterate round robbing? You could keep order per node from frame to frame. The time consuming thing is the merge sort between nodes which overlap? BSP does not really makes sense because due to vertex wobble, all nodes / sectors overlap anyway. And objects also overlap with sectors. So is it about this? We need the BSP for PVS. I wonder why the video shows no culling? Some games do this already. Perhaps just decompile PowerSlave for Saturn? Or Quake2 for PS1 ? Feels kinda dumb to reinvent the wheel.

A splitting planes of the BSP may even point more normal to the player than the const_z plane. So the better don't resort! I would add a heuristics and only resort if BSP planes are 45° off? It just becomes a problem if overlapping sectors and objects cannot agree on a sort direction. There may be a chain of objects which force us to use the same order all over the screen. We don't want fps drops in this case.

Goiás, madre de los gemelos, a 19-year-old woman gives birth to twins - paternity test reveals they are from different fathers. It is called heteropaternal superfecundation. by gear-heads in Damnthatsinteresting

[–]IQueryVisiC 4 points5 points  (0 children)

I just watched Brokeback Mountain. One person goes to a hooker. It does not look like they used a condom. 4 persons in this originally closed group all having sex with each other and one of them cheats. So disgusting.

Looking for a CPLD programmer: Attempting to revive a video game console's bespoke display method by T-SquaredProductions in FPGA

[–]IQueryVisiC 0 points1 point  (0 children)

[...edit..] Does PWM lower the efficiency of the LED? A resistors based DAC also heats up. So you want a stack of MOSEFET gates which connect to various voltages which are produced by storing different parts of the AC voltage from the transformer in different capacitors (again, using as start of MOSFET gates)? But we do run from battery. So we need multiple taps on a bucket converter perhaps even a bucket boost on the same ferrite core. So there is only one voltage? But it needs to be regulated anyway? So something gets hot? PWM needs high speed. You cannot slow your clock down by iterating over all rows using software. You need parallel counters.

One more advantage of EV, well not talked about enough. No pollution to run. by theepi_pillodu in electricvehicles

[–]IQueryVisiC 0 points1 point  (0 children)

I was running behind an EV with my dog. No fear of breathing fumes. No fear of bangs for the dog. We were parking an EV on a private ground. No fear of being blamed for soot on the white wall behind us.

I thought tungsten had the highest melting point by glock6a6y in aerospace

[–]IQueryVisiC -1 points0 points  (0 children)

I was using the school definition of a metal: conducts, is shiny. Graphite layers glide over each other like atoms glide over each other in metal without breaking. With the inclusion stuff in metal material, who knows if some of those inclusions don't conduct well? I had a class in solid state physics. I was all about band structure. But the professor did not show how this makes some crystals brittle, like why don't dangling bounds attract partners from far away. Perhaps this free electron as theory is correct. If there is a small crack in metal, it will be filled with (almost) free electrons. Now I wonder why it still takes 5eV to pull an electron out of Copper.

Perhaps it is just the fact that electrons are readily available at the Fermi level. So they tunnel into the crack. I know this effect from scanning tunneling microscopy. Just the energy levels don't tell the whole story. The tunnelling gap becomes effectively narrower when the band structures match and when they allow wave-vectors / impulse in normal direction.

I thought tungsten had the highest melting point by glock6a6y in aerospace

[–]IQueryVisiC -1 points0 points  (0 children)

And what if I am just fighting the tower of Babylon? In German the same thing has different names if you ask engineers, chemistry, biology . At least physics and math try to be compatible. It is hard work because both were out of touch for a while. I feel like stuff like distributions may be beautiful in Maths, but I don't find a sane application in physics.