chips
mpv
chips | mpv | |
---|---|---|
9 | 830 | |
918 | 26,191 | |
- | 2.2% | |
7.5 | 9.9 | |
about 1 month ago | 6 days ago | |
C | C | |
zlib License | GNU General Public License v3.0 or later |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
chips
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Zilog Z80 CPU – Modern, free and open source silicon clone
Because it's a software implementation in Verilog which is much closer to a software emulator and has nothing to do with the original Z80 "transistor structure".
For instance here's the LD A,(DE) "payload":
https://github.com/rejunity/z80-open-silicon/blob/974c7711b2...
And here's the equivalent in my software emulator:
https://github.com/floooh/chips/blob/bd1ecff58337574bb46eba5...
What's interesting though is that the Verilog implementation doesn't seem to update the internal WZ register, even though there are references to WZ in other places.
But in the end, if it looks and feels like a Z80 from the outside (e.g. the right pins are active at the right time) the internal implementation doesn't matter all that much.
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Getting into way too much detail with the Z80 netlist simulation (2021)
Author here, interesting to see this posted since it's more like a reference manual for Z80 instructions with 'unusual' timings. The followup blog post about the cycle-stepped Z80 emulator is probably more interesting:
https://floooh.github.io/2021/12/17/cycle-stepped-z80.html
One important note: at the start of the post I'm speculating about why I was seeing some minor differences to a 'real' Z80, it turned out that this speculation was wrong and instead the differences were caused by 'incomplete' netlist simulation code which worked fine for the 6502 but required some tweaks for the Z80, see the comments of this GH issue for details: https://github.com/floooh/v6502r/issues/2.
As far as I'm aware the netlist simulation now behaves correctly like a Zilog Z80 (but note that reverse engineered Z80 clones like the East German U880 are known to have slightly different undocumented behaviour), and the Z80 emulator in https://github.com/floooh/chips is tested against the netlist simulation for correct behaviour and timing.
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A world to win: WebAssembly for the rest of us
I simply don't see that there's a big enough difference between traditional garbage collection, refcounting and manual memory management. Each of those can already be implemented in pure WASM, just more or less awkwardly.
As for "just another ISA", there have been CPUs which had separate call- and data-stacks, with the call-stack living on the CPU and not accessible as regular data. In that sense WASM isn't much different then those esoteric CPUs.
And even though WASM might not allow free jumps, I yet have to see a noticeable performance difference between WASM and native for this type of "worst case code":
https://github.com/floooh/chips/blob/f5b6684ff6e899429544b21...
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Appler: Apple ][ emulator for IBM PC, written in 8088 assembly
Oh my, the 6502 emulation [1] has fewer lines of assembly code than my (code-generated) implementation has lines of C code [2] :D
Very nice use of a macro assembler though [3], makes the code feel very high level.
To my defense, the generated code has a lot of redundancies (such as assert(false) which were meant to catch any 'stray cycles' but which are removed in release mode.
[1] https://github.com/zajo/appler/blob/develop/src/65C02.ASM
[2] https://github.com/floooh/chips/blob/master/chips/m6502.h
[3] https://github.com/zajo/appler/blob/52aaa0f768cdf303438cd2c7...
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Ask HN: What's the best source code you've read?
I don't know if it's the best code I've ever read but this emulation library [0] of 8 bits computers is pretty well written, documented and designed: https://github.com/floooh/chips.
It's a good way to document old hardware with emulation code.
- A new cycle-stepped Z80 emulator
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Tiny Emulators
Looks like here's the source code of the emulators:
8-bit chip and system emulators in standalone C headers - https://github.com/floooh/chips
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Emulating a Parallel Memory chip at the circuit level:
There's a project on GitHub of similar nature -- it has include-able .h files emulating 8-bit computer chips on the pin level, and bus state is also held in a 64-bit value: https://github.com/floooh/chips/blob/master/chips/m6502.h
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Yet Another Eater Sap1 Is Finished
I wrote also a library of components for some complex chips (like 6502 simulation using https://github.com/floooh/chips)
mpv
- MPV: Vulkan Video Decoding: Usage Guide and FAQ
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Firefox slow to load YouTube? Just another front in Google's war on ad blockers
https://mpv.io/ has yt-dlp support, if yt-dlp is installed you just need to throw the URL at it and it plays the video (without download).
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Can't save frame as JPG
See https://github.com/mpv-player/mpv/issues/9053
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Video stops on furst frame, audio continues to play,seek works
I apologise for not following procedure. I am in the middle of building mpv 0.37 from source. Irrespective of the outcome I will document what I had to do in addition to the instructions on mpv.io and if the problem perststs, where it happens and where not with kernel version, mpv version taken from the screen, and the terminal output.
- PC Gopro playback help needed
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S23 8k video freezes when played on VLC computer
Use MPV. Partticularily shinchiro's builds. Extract the folder where you want its installation directory to be, if you decide to install it. Otherwise, just drag and drop files on top of its window or executable.
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Ripgrep is faster than {grep, ag, Git grep, ucg, pt, sift}
Author of ripgrep here.
Like automatic encoding detection and transparently searching UTF-16?
Or simple ways for composing character classes, e.g., `[\pL&&\p{Greek}]` for all codepoints in the Greek script that are letters. Another favorite of mine is `\P{ascii}`, which will search for any codepoint that isn't in the ASCII subset.
Or more sophisticated filtering features that let you automatically respect things like gitignore rules.
Those are all things that ripgrep does that grep does not. So I do not favor this explanation personally.
ripgrep has just about all of the functionality that GNU grep does. I would say the two biggest missing pieces at this point are:
* POSIX locale support. (But this might be a feature[1].)
* Support for "basic" regexes or some equivalent that flips the escaping rules around. i.e., You need to write `\+` to match 1 or more things, where as `+` will just match `+ literally.
Otherwise, ripgrep has unfortunately grown just about as many flags as GNU grep.
[1]: https://github.com/mpv-player/mpv/commit/1e70e82baa9193f6f02...
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PCSX2 Disables Wayland Support
- https://github.com/mpv-player/mpv/issues/8692
- C Locales
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Yorick is an interpreted programming language for scientific simulations
https://mpv.io played it without fuss.
What are some alternatives?
wasm.cljc - Spec compliant WebAssembly compiler, decompiler, and generator
GStreamer - GStreamer open-source multimedia framework
s7-wasm - Example of using s7 Scheme with web assembly and emscripten
yt-dlp - A feature-rich command-line audio/video downloader
makaronLab - CPU simulation experiments
celluloid - A simple GTK+ frontend for mpv
8086tiny - 8086tiny interpreter by Adrian Cable, taken from http://www.megalith.co.uk/8086tiny/
FFmpeg - Mirror of https://git.ffmpeg.org/ffmpeg.git
TypeScript - TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
glsl-shaders - This repo is for glsl shaders converted by hand from libretro's common-shaders repo, since some don't play nicely with the cg2glsl script.
appler - Apple ][ emulator for MS-DOS, written in 8088 assembly
VideoLAN Client (VLC) - VLC media player - All pull requests are ignored, please follow https://wiki.videolan.org/Sending_Patches_VLC/