#uxn — Public Fediverse posts

I made some progress on the "Uxntal Koans":

https://git.sr.ht/~ismael-vc/uxntal-koans

Since this is for the #catjam, I decided to manage my own build tool in Tal with a thin wrapper in Forth, so I just call:

$ ./bake
$ ./bake clean

Instead of:

$ bin/uxncli bin/bakefile.rom clean

And the setup has to be done either way outside uxntal; make sure bin dir exists, compile uxncli with subprocess support and assemble the bakefile.tal.

Once that is done, the rest will be handled 100% by uxn!

#uxn #uxntal #varvara

Zental testing framework in 1 KiB for Uxntal, version 1.0.0!

Code:
https://git.sr.ht/~ismael-vc/zental

Docs and examples:
https://uxnomicon.miraheze.org/wiki/Zental

I still have one month before the #catjam ends in which I'll try to implement "Uxntal Koans". 📜

Inspired by the original "Ruby Koans", an introductory tutorial to the language as a series of test cases the learner has to fix in order to reach enlightenment! 🧘

I intended to make a TUI game at first but I like the idea of koans better. :P

#uxn #uxntal #varvara

I spent some more time optimizing my buffers and my glue code.... And now I have music playing WITHIN the #uxn emulator itself!!! ( Instead of controlling MPD like last time )

Completely unpractical but I HAD to give it a shot. Had to slightly change the how audio was implemented within uxn2 to get this to work, but it is still completely within spec! ( but the patch makes CPU usage 7x its normal counterpart )

I just realized that I can pipe ANY streamable image data.... so I accidently also made a #uxn webcam!

my new #uxn music play can now display song infromation & art :)

( I even added the ability for the image to be streamed in if the MPD instance is over the network )

If I had Assembly experience and actually understood fourth logic, I would learn #uxn and write a text editor that could run on a spec of dust floating past my field of vision

My Varvara implementation allows to optionally route console input/output not to stdin/stdout but to arbitrary streams (abstracted by #zig reader and writer interfaces).

This gives me the ability to load an uxntal source file, assemble it in memory with a sandboxed, transient, auxiliary #uxn + Varvara instance that embeds a copy of drifblim, and load the generated ROM into the main uxn+Varvara instance. In just 30 lines.

I can't accurately put into words how much fun I am having right now.

I know I shouldn't be surprised that it just works as is, but still cool, I can build compile uxn binaries directly inside dos.

wcl -bt=dos -ml -fe=bin/uxnmol.exe src/uxnmol.c

http://wiki.xxiivv.com/etc/uxnmol.c.txt
#uxn

@sotolf @tuxjam @thelovebug

Similar to how #uxn (inspired by #forth) was designed expressly to be as easy to port as possible, with the main emulator (without any i/o) being only about 100 lines of C ;)

hexdump -C needed a spa day, so I gave it a massage:

https://paste.sr.ht/~ismael-vc/a074bf4e12d557fce43da4a13cfd038baf275f09

:3 #uxn #uxntal #varvara

Though I'm making my hexdump a tool that can be passed a ROM file as an argument (it was inspired by hexdump -C), it is nice to see that with a little effort is doable as well with the existing tools.

I also bought the awk pocket reference, so useful.

(If there is a better way to do this with awk, I'd love to learn!)

@jakehamilton

Sounds like you're describing #permacomputing, or at least, some elements of it.

#uxn and #CollapseOS / #DuskOS are worth looking into, if you're not familiar with them already.

I am rewriting my #uxn music player, And the main thing I want in this version is album art! So I just finished writing my glue code to automatically dither, process, and convert any album art (including art embeded inside of audio files) into .icn files at runtime :>

Live coding Zen an Uxntal testing library:

https://www.youtube.com/watch?v=YEp6Vhtfta0

#uxn #uxntal #varvara #TDD #virtualmachine #fantasycomputer #assemblylanguage

...and just like that we're passing all of opctest.rom's #uxn tests! 🧙‍♂️

participating in #Catjam again!

last year I wanted to make an eco-sim but I didn't have time, so it got squished into a sort of garden demo

this year I have a solid month ahead of me :)

time to upgrade hexgarden into an actual game!

I made an article at #Uxnomicon documenting the API of Zen, my tny #Uxntal testing framework:

https://uxnomicon.miraheze.org/wiki/Zental

I hope it might be helpful for others as it has been to me!

: )

#uxn #varvara #TDD

#Uxntal #testing #framework in 760 bytes.

https://paste.sr.ht/~ismael-vc/2f2d41f245481d121632654f86effbcdf25457ac

I have called it Zental, in the images you can see it testing itself (the failed tests are expected).

Usage: https://paste.sr.ht/~ismael-vc/82d44be228adaf7be199e2e2bca77bd1c36ad729

Just create a routine under the @ test scope, ie:

@ test/foo ( -> )
/verbose
{ "some 20 "set } /set
{ "some 20 "subset } /subset
#01 #0101 EQU /assert
/end-subset
/end-set
/summary
BRK

~zen.tal

I'll put it in a repo soon. :3

#uxn #varvara #TDD

Some days we have no power, others no reception, once in a while we have neither. Today was such a day, the oppressing low skies suffocating the signal and covering our solar panels didn't allow for much virtual fussing.

But while penciling out storyboards for our #Catjam entry, Rek pointed out that it might be nice to have a Yufo cameo aboard the train. Genius idea! Let's look at the actual state of that ol' thing.

Written in a haste during the Virtual Pet Jam a few years ago, its codebase was horrendous; Uxn was quite young at the time, the linter in its infancy too. It ran just fine but needed a bit of love if the codebase was ever going to be something worthy of being looked at by anyone.

So, I spent the little power I had left in my laptop rewriting it all in a more standard Uxntal style, with the typical video game OOP patterns that makes the more recent roms somewhat robust. It runs faster, looks and feel nicer too. I've published a new build with metadata and all the other niceties of modern #Uxn projects.

If anyone ever asks who that weird antlered creature on the train is, at least we can be proud to point to Yufo.

https://rabbits.srht.site/decadv/
#occ2026

poll: i need a cv/portfolio for something #uxn related i want to apply for.

should i...?

Today I have implemented malloc in 76 bytes in #Uxntal .

https://paste.sr.ht/~ismael-vc/21de76cd6c103a469ff06f33696a95c49bf87508

After fiddling with this all afternoon, I finally have implemented a malloc other than the simple "bump pointer allocator" I was using.

I'll work on mfree, but that will be for tomorrow.

I changed the unit size to byte instead of 64 bytes because there is no MMU expecting it in 64 bytes in #Uxn as it was in the PDP, so it makes no sense in Uxn? might bite me later.

Catmon was indispensable.

#varvara #unix #pdp

With #discord 's newest security ai thing, I can no longer send the art I draw to my friends. Because, noodle in #uxn makes heavy use of grids and checkered lines to add depth. So now that can get me banned. Yay.

Trying to install #uxn on macos is quite infuriating.

alright, i'm officially working on implementing a #uxn environment for 68k macs (system 7 specifically) for #occ2026

will this work? who knows! but it's something i'll be doing next week.

http://plastic-idolatry.com/erik/2026/occ/