ciao
microwatt
ciao | microwatt | |
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3 | 19 | |
243 | 644 | |
2.1% | - | |
8.8 | 6.7 | |
2 months ago | 28 days ago | |
Prolog | Verilog | |
GNU Lesser General Public License v3.0 only | GNU General Public License v3.0 or later |
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ciao
- PHP: Prolog Home Page
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An embeddable Prolog scripting language for Go
Some Prolog systems (like Ciao Prolog https://github.com/ciao-lang/ciao/blob/master/core/lib/forei...) implement bidirectional foreign interfaces. Once you have C bindings it is easy to write bindings from Rust, C++, or any other language (that can interoperate with C). I give here some details about Ciao because this is the system I know better but it should be similar for other popular Prolog implementations.
The tradeoffs depend on the complexity of the Prolog code and your needs for performance and features: pure LP, Prolog (search+unification+cut), garbage collection, dynamic database updates, constraint domains, etc. The Ciao Prolog engine is around 300-400KB. Adding a few libraries, compiler, etc. it goes to 2MB. Naive Prolog systems can be one order of magnitude smaller at the cost of sacrificing ISO compatibility, performance, etc. Note that "performance" can be very misleading. Some Prolog programs may run particularly fast in some Prolog system and very badly in others.
- Keeping POWER relevant in the open source world
microwatt
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Microwatt: A tiny Open POWER ISA softcore written in VHDL 2008
My favorite part of this project is the pretty large battery of test cases. A lot of chip rtl releases don't bother with open sourcing the verification too, and that's arguably more useful than the rtl in the first place.
https://github.com/antonblanchard/microwatt/tree/master/test...
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Arm wants to charge dramatically more for chip licenses
MicroWatt is the only one I know of.
https://github.com/antonblanchard/microwatt
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RISC-V Pushes into the Mainstream
I have several OpenPOWER systems, including the POWER9 I use as my usual desktop. Besides IBM and other server manufacturers like Tyan and Wistron, you can get them as Raptor workstations and servers.
If you want an OpenPOWER design to play with, look at Microwatt ( https://github.com/antonblanchard/microwatt ) which is complete enough to boot Linux.
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How long until RISC gets adopted for the desktop?
Not true, as of 2019 the power ISA is able to be used without needing to pay any royalties to ibm under the openpower foundation. There's already a few projects that have taken advantage of it such as libreSOC and Microwatt. Source code for various firmware components are also freely available pertaining to the power platform.
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Build Open Silicon with Google
https://github.com/antonblanchard/microwatt is an example of a Linux-capable 64-bit core that has been submitted on multiple Open MPW shuttles:
- Any raw binary generic platform-agnostic test roms for PowerPC?
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What would you think if the Amiga line jumped from PowerPc to RISC-V CPUs?
GitHub https://github.com/openpower-cores https://github.com/antonblanchard/microwatt
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Keeping POWER relevant in the open source world
At the other end of the scale, if anyone wants to play you can run a little openpower CPU on a FPGA with completely open source. https://github.com/antonblanchard/microwatt
It's capable of running Linux, some example docs are https://shenki.github.io/boot-linux-on-microwatt/
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What is your take on ISA architectures for FPGAs (x86, arm, risc-v)?
Why dismiss POWER or SPARC ? :-)
What are some alternatives?
prolog - The only reasonable scripting engine for Go.
chiselwatt - A tiny POWER Open ISA soft processor written in Chisel
Prolog-to-List-Prolog - Converts Prolog algorithms to List Prolog algorithms
midimonster - Multi-protocol control & translation software (ArtNet, MIDI, OSC, sACN, ...)
trealla-js - Trealla Prolog for the web
Apollo-11 - Original Apollo 11 Guidance Computer (AGC) source code for the command and lunar modules.
go - Trealla Prolog embedded in Go using WASM
OpenSkyStacker - Multi-platform stacker for deep-sky astrophotography.
librealsense - IntelĀ® RealSenseā¢ SDK
VexRiscvBPluginGenerator
php - Prolog Home Page