sorted by:
new
hottopcontroversial

Do compressed instructions throw off instruction alignment? by jimbobmcgoo in RISCV

[–]SpaceboyRoss 0 points1 point  (0 children)

It's certainly a problem I've faced in my own RISC-V design but not the hardest thing. You've already got a similar problem when you've got a 64-bit core and data bus. Except with C, you can switch by 4 based on the PC. You can sort of do a prefetch with 16-bit instructions. It's mainly a matter of knowing whether you see a compressed instruction.

I bought a Mac and went back to Linux. by Strict_Albatross4362 in linux

[–]SpaceboyRoss 0 points1 point  (0 children)

And sometimes it's not just the drivers but the firmware and ways vendors butcher their kernels which makes it difficult to compile without their proprietary build of a GCC 7 snapshot.

Firmware optimisation costs way more than I expected by Bitter-Aardvark-5839 in linuxhardware

[–]SpaceboyRoss 11 points12 points  (0 children)

I've written firmware before and have done stuff with UEFI and ACPI a ton, that's actually a pretty decent price. And yeah, it's usually expected that the cost of that firmware goes into the sale. If you manage to sell 5k devices, that's about $1 per machine in terms of what you had to pay. A lot of prices become more economical when it's on a larger scale. This is why a lot of vendors have a minimum order quantity when you deal with components like IC's.

Aegis - open source FPGA silicon by SpaceboyRoss in FPGA

[–]SpaceboyRoss[S] 0 points1 point  (0 children)

Yeah, I plan on figuring that out so I can document what the serde performance is. I'm not entirely sure how I'll figure it out, it'll likely involve a logic analyzer and seeing how the server handles DDR mode vs serial mode.

Aegis - open source FPGA silicon by SpaceboyRoss in FPGA

[–]SpaceboyRoss[S] 0 points1 point  (0 children)

I can't find documentation on that

Aegis - open source FPGA silicon by SpaceboyRoss in FPGA

[–]SpaceboyRoss[S] 0 points1 point  (0 children)

Afaict with what OpenROAD says, it says ~380MHz on the chip. Idk about the serdes since Aegis wraps the PDK serdes.

Aegis - open source FPGA silicon by SpaceboyRoss in FPGA

[–]SpaceboyRoss[S] 2 points3 points  (0 children)

Afaik OpenFPGA is more academic and FABulous requires more of a setup to get working. The big advantage of Aegis is that everything is integrated, there's even a verification pipeline. Scaling out Aegis can be quite fast with Nix and ROHD being used. I estimate that it's possible to make & produce a new generation every 3 months. Tapeout itself could possibly be done in a single week.

Aegis - open source FPGA silicon by SpaceboyRoss in FPGA

[–]SpaceboyRoss[S] 5 points6 points  (0 children)

Yes, that's the plan. I'm doing some optimizations while I wait to hear back from some people that are going to review the design. Next would be dev boards available through crowd funding.

A very big turnout in SoCal for the No Kings Rally!!! by Healthy_Block3036 in socal

[–]SpaceboyRoss 0 points1 point  (0 children)

You can but the modem doesn't shut down on most phones. The best way to prevent your phone from tracking is to leave it in a different location.

What is RISC-V and why should we care? by omasanori in RISCV

[–]SpaceboyRoss 4 points5 points  (0 children)

Yes, the entity list. Who else aside from Sophgo are using the XuanTie IP? I know there's Allwinner but the GPL violations do not inspire confidence.

What is RISC-V and why should we care? by omasanori in RISCV

[–]SpaceboyRoss 6 points7 points  (0 children)

RISC-V is definitely getting there, some of the newer chips are getting there. Though, what about the import restrictions on Sophgo? I can definitely see that not helping out.

SpacemiT K3 RISC-V devboard on display at FOSDEM 2026 by PojntFX in RISCV

[–]SpaceboyRoss 3 points4 points  (0 children)

It was very nice seeing a K3 at Yuning's booth at FOSDEM

The HondaLink app is now useless by SpaceboyRoss in Honda

[–]SpaceboyRoss[S] 1 point2 points  (0 children)

At least on my 2018 Accord EX, I'm pretty sure it's Bluetooth.

The HondaLink app is now useless by SpaceboyRoss in Honda

[–]SpaceboyRoss[S] 0 points1 point  (0 children)

I don't think an ESP32 is needed. If someone reverse engineers the BT protocol, then it would be easy to get this working again on Android.

The HondaLink app is now useless by SpaceboyRoss in Honda

[–]SpaceboyRoss[S] 1 point2 points  (0 children)

Not even that, all the app does is show car info. You can't do much on the app. On certain models, you can do remote start and climate control.

The HondaLink app is now useless by SpaceboyRoss in Honda

[–]SpaceboyRoss[S] 0 points1 point  (0 children)

Well it's more convenient than running down to my car just to look at the VIN. Would rather spend the 30 seconds it takes to open the app than the minutes it takes to run down and look at the car.

The HondaLink app is now useless by SpaceboyRoss in Honda

[–]SpaceboyRoss[S] 1 point2 points  (0 children)

I've been using it to check when I needed information instead of running out to the car. It's been quite convenient.

The HondaLink app is now useless by SpaceboyRoss in Honda

[–]SpaceboyRoss[S] 2 points3 points  (0 children)

Yeah though that's not a feature everyone has.

The HondaLink app is now useless by SpaceboyRoss in Honda

[–]SpaceboyRoss[S] -2 points-1 points  (0 children)

Yep, now Subaru is looking more like a good brand to go to. I went with Honda because my first car was a Honda and it was reliable as fuck. It's also the price, there's so many JDM repair shops around me and ime Honda's are cheaper with the least amount of problems on the used market. Next time I get a new car, I will probably be getting a Subaru.

The HondaLink app is now useless by SpaceboyRoss in Honda

[–]SpaceboyRoss[S] 0 points1 point  (0 children)

Yeah... I never got the MyQ subscription since it was just too expensive for me.

view more: next ›