Unklejoe

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301.
by Unklejoe 8y ago
Check out the Wand Pi. It uses an NXP i.MX8.
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by Unklejoe 8y ago
For what it’s worth, my old cable box actually had an FPGA in it.
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by Unklejoe 8y ago
I have a 335i with a 6HP21, and the converter lockup behavior was the first thing I noticed when I got the car. It usually locks up in first gear, which I’m sure helps with fuel economy a lot. That said, the overall shift quality could be a
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by Unklejoe 8y ago
Yeah, that’s a decent embedded CPU. I actually have quite a bit of experience with it (as well as the T2080, P1023, etc.). I think it’s probably a little too weak to serve as a general desktop replacement though. It’s somewhere in Raspberry
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by Unklejoe 9y ago
There are also a few interesting options in the ~$100 price range. One example is the new WandPi 8M. It's based on the NXP i.MX8M and has a few key advantages (particularly, true gigabit Ethernet and USB 3.0). I've ordered one mys
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by Unklejoe 9y ago
I'm running the reference Matrix server (Synapse) on my home computer, and I'm using the Riot.im client. I mainly use it to communicate with a group of three friends. They are using Android, and I'm using an iPhone. It seems
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by Unklejoe 9y ago
Sorry for the late response, I just saw this. I'm currently in a group chat with two other close friends. We were originally using GroupMe, but I convinced them to switch and register on my server (after I made sure that it was working
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by Unklejoe 9y ago
Riot.im is an open source Android/iOS/web messaging app. It uses the Matrix protocol, which is also open. There is a reference Matrix server called "Synapse", which I actually just started running the other day. With the
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by Unklejoe 9y ago
Cool. I just set up my own Matrix server (Synapse) the other day and have been using Riot.im on my iPhone. To be honest, everything works much better than I expected. Right now, my only complaints are that there are some notification settin
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by Unklejoe 9y ago
Any examples of this in the Linux kernel? Not doubting you, I'm just curious. I would think this would be device driver specific rather than architecture specific. Most drivers I've seen just use the kernel's DMA API (dma_all
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by Unklejoe 9y ago
Aren't most modern CPU's cache coherent? I know the recent PowerPC SoC I was working with was. All of the DMA cache sync functions were no-ops in the Linux kernel for that architecture.
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by Unklejoe 9y ago
Just an idea that I had: If these exploits seem rely on taking precise timing measurements (on the order of nanoseconds), could we eliminate or restrict this functionality in user space? The Spectre exploit uses the RDTSC instruction, and t
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by Unklejoe 9y ago
> Wouldn't this kind of issue validate the ideas of microkernel-based OSs, where kernel and user spaces are already completely separated? I don't think so, but it depends what you mean. Kernel space and user space being separat
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by Unklejoe 9y ago
Cool. This isn't related to TVs, but I have a couple pieces of old Sony HiFi equipment from the very early 1970's and I'm always amazed by the quality and attention to detail Sony had back then. I feel like it's back whe
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by Unklejoe 9y ago
> IMHO it's not such a big deal for the typical single-user personal computer IDK. If this means that some JavaScript from a website can read my kernel's memory, then it seems like a big deal.
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by Unklejoe 9y ago
Interesting. Do they do that on purpose or is it due to how the motor works? It's so flat that It seems like they limit the torque on purpose, perhaps to prevent breaking things. The almost perfect linear decline after the constant par
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by Unklejoe 9y ago
A couple of points: 1. A drag car does not start at zero RPM. The engine is probably over 4000 RPM and under load before the race even begins. In fact, many cars have to dial their launch RPM down because it ends up making enough power to l
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by Unklejoe 9y ago
Well, most of my friends happen to be "in to" cars, so I've spent a lot of time being around and talking about cars. Since I'm "good with computers", I would always help them with their electrical issues, which
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by Unklejoe 9y ago
> — its torque is also constant and available from 0 RPM I don't think torque is constant. The power is constant, and torque gradually decays as RPM increases as per the following equation: HP = Torque x RPM ÷ 5252 Most 1000 HP drag
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by Unklejoe 9y ago
Yep! The tires are actually designed to do that. It really helps to prevent things from snapping by absorbing some of the shock when the cars drop the clutch or let go of the trans brake.
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by Unklejoe 9y ago
There are some IRS cars capable of going 8's. The ones I've seen the most are GTRs, Supras, and the occasional 2JZ/LSx swapped 240sx (I think they swap a Nissan/Infiniti Q45 rear into it or something). Now that the 2015+
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by Unklejoe 9y ago
If we're talking about anything, you can build a turbo Gen 4 LSx swapped Foxbody Mustang for very cheap (check out the sloppy mechanics group). The same goes for an automatic AWD DSM. Both of those have the potential to get into the 8&
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by Unklejoe 9y ago
You're right - I can't find any other car that can run 8's without modifications. There are some that can achieve those numbers with under $10,000 worth of modifications, but that's kind of irrelevant since we're ta
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by Unklejoe 9y ago
True. GTRs are not the best for drag racing. I think the Alpha 12 (~1200 HP) GTRs are actually dipping into the 8's, but I was thinking more along the lines of a Mustang, which is one of the most common cars used for drag racing and is
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by Unklejoe 9y ago
Modern high-end aftermarket EFI systems (such as MoTeC) do have traction control, but it's not as effective as one would expect. The main issue I found is that street tires often just don't have the traction required, even under i
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by Unklejoe 9y ago
Has the 8 second quarter mile been confirmed to be done in stock trim (i.e., no special tires or other modifications)? The reason I ask is because that is EXTREMELY impressive. I tune EFI systems on race cars as a hobby, and any car in the
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by Unklejoe 9y ago
Spotify gives me absolutely zero issues on Linux. What type of issues are you seeing with it?
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by Unklejoe 9y ago
> because a flow sensor would be additional cost for negligible benefit? Exactly. It's basically unnecessary given the other sources of information that the ECU has at its disposal. It knows the target fuel pressure (some cars even
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by Unklejoe 9y ago
What exactly do you mean when you say PCI-Express isn't cache coherent? I would think that's dependent on the specific platform more than anything. For example, on a cache coherent architecture like the Freescale T2080, if a PCI d
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by Unklejoe 9y ago
One thing that kind of bothers me is that I keep seeing people justify this decision by mentioning that AMD may be using third party source code which they do not have the license to release. My issue with that is that I don’t see how it pr

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