Recent submissions

Comment · 1 month ago
Comment · 1 month ago
I've got a standard check-list of tests to run before any deep analysis on faulty circuit behaviour:

1. Check the power rails are correct and stable (at the target devices, not the PSU source)

2. Check the resets are correct (polarity, level, sequencing) and reaching where they're needed

3. Check the clock is toggling cleanly (no jitter, has clean monotonic waveform)

4. General signal integrity and setup/hold of signals that are related to the issue

That catches a lot of basic issues. If those are all clean, then you go deeper.

To the article author's suspicion of crystals, I have seen crystal oscillators fail (stopping toggling) as ambient temperature ramps up and down; that's a nasty one to catch and prove, but it can happen. Changing vendor was the only solution there.

Comment · 1 month ago
This extension is blocked under Firefox for the following reason:

This add-on violates Mozilla's add-on policies by collecting user data without disclosure, consent or control and executing remote code

Comment · 3 months ago
I have a RiscPC in the shed and a half-repaired A3000. I don't fire them up them often, but both have !Director launching on boot; it is a wonderful program. Thanks!
Comment · 4 months ago
> The primary goal of this is support for old/obscure hardware with no LLVM/GCC support. There are still some systems out there that don't support Rust but support C.

The landing page mentions Plan 9 as one of the systems.

Comment · 4 months ago
Comment · 4 months ago
My personal experience of Fable 5 doing its own thing has been very positive.

I was trying to find the root cause of a crash in a Python module which left no errors in the log or console. Fable wrote a test harness that simulated clicks in the UI, then bisected my code until it found the point where it started crashing. It exaggerated the cause of the crash, then ran a series of bash one-liners to make Python virtual environments under `/tmp` for each version of that Python module until it found one that did not crash.

It went way deeper to root cause discovery (a regression in the module causing a heap allocation overflow) than I could have done myself, provided enough info and a simplified example to raise a bug report and then wrote a work-around to prevent that from happening in my application.

I don't let it run completely loose; I review each CLI command it wants to run and I append answers to the "yes" continue action (if I have them) to prevent excessive token use.

Comment · 4 months ago
Install Windows 11 ARM under the macOS "UTM" App. This lets you run x86 Windows programs on Apple silicon.
Comment · 4 months ago
Comment · 5 months ago
Greg Egan writes novels with plots that revolve around high-end science, physics and mathematics with some very wild concepts and conclusions. Even better, he has animations and illustrations of some of his books' concepts on his website for those that want to go deeper.

I hadn't noticed his Miscellaneous Fiction section, so this is a nice rabbit hole to find.

Comment · 6 months ago
“Sent from my iPhone” is a default signature, but you can change the message under Settings -> Apps -> Mail -> Signature (at the bottom of the options page)
Comment · 6 months ago
My /usr/bin/ folder wants to know which bit gets italicised :)
Comment · 6 months ago
Very impressive that I can sketch a character in the top-left and get a close match. That's a real highlight showing that there's more going on under the hood than a big look-up table.
Comment · 7 months ago

Live from the official Hacker News API

A modern reader for Hacker News · SvelteKit + Skeleton