Hmmm... debating whether to propose different behaviour for #uxn #varvara's flip-x and flip-y bits when interacting with the auto byte, but realising it's not a simple or clean proposal. Would be nice to be able to flip big sprites without complex loops, but maybe it'd make things too confusing.

Learned how the #uxn color palette works and then modified hex values in the writing app 'Left' to display in dark mode! This is fun! 😀

#uxntal #varvara
https://100r.co/site/left.html

Alright, let's see what all of the commotion is about #uxn #uxntal #varvara

The #uxn #varvara wiki page has file occupy 2 devices (a and b) but the tutorial has date-time as b (c in the wiki) and as such doesn't describe what the second device would be. I assume it's just out of date, but then what's the second device for? Is it just to use 2 files at once or does it add further functionality to the first device? The wiki doesn't mention it... ( @neauoire )

Finally understand how auto byte works in #varvara, the instruction is somewhat confusing (or at least was for this one) so for anyone who sees it:
There's more behaviors than the 4 listed on the documentation. 0 increments x, 1 increments y, 2 increments addr, and 3 is diagonal, but importantly 5 increments x and the addr, and 6 increments y and the addr.

This part is somewhat more intuitive, but the high nibble corresponds to the # of sprites to add after the first one.

Finally understand how auto byte works in #varvara, the instruction is somewhat confusing (or at least was for this one) so for anyone who sees it:
There are more behaviors than the 4 listed on the documentation. 0 increments x, 1 increments y, 2 increments addr, and 3 is unused, but importantly 5 increments x and the addr, and 6 increments y and the addr.

This part is somewhat more intuitive, but the high nibble corresponds to the # of sprites to add after the first one.

I understand it correctly, the #uxn virtual machine is essentially separate from the #varvara computer. In the sense that you could write a _different_ computer/front-end for #uxn, that still uses #uxntal but may have different capabilities than Varvara, using different ports.

I've got an old vga screen next to my laptop, i wanted to do that for a long time #uxn #varvara #esp32
https://www.youtube.com/watch?v=IE8FciblnQ0

This morning i played with #varvara basic. But this little example freezes uxn :eo_thinking: @neauoire

@protodrew

#uxn and #varvara mascots are among my favorite!

https://kokorobot.ca/site/uxn.html

Looking through a list of fantasy computers like #varvara or #domeengine, I stumbled across https://miniscript.org by Joe Strout. It is an educational programming language, even easier for beginners than Python or Lua, but quite expressive.

I am curious to see if it is possible to port the language to an ESP32 and make a real smol computer, based on it.

@ibannieto @neauoire @rek
So do I :)
Have you seen there's a #forth implementation for #varvara, called UF?

http://www.call-with-current-continuation.org/uf/uf.html

having fun with UF #forth (#varvara without #uxn)

Finally made some time to get back into #uxn programming. Starting to learn the #varvara file device so I can use it in my ubal project.

I picked this up from the giveaway bookshelf outside of a used bookstore somewhere in Virginia last year. I haven’t had a chance to read it yet, and now I’m wondering if it has any use in #uxntal #varvara programming. Could be a fun read. #thelibrary

and we have graphics #uxn #uxntal #varvara

@cr1901 @cancel @neauoire #ProofOfConcept #WorkInProgress #uxn #varvara #uxnemu #GUI #amiga #AmigaOS #m68k #MC68000 neralie clock (if a clock is what it is? it's a bit cryptic!) working (but very slowly, and overlapping window decorations...).

#ProofOfConcept #WorkInProgress #uxn #varvara #uxncli #CLI #amiga #AmigaOS #m68k #MC68000

`uxncli` ported to AmigaOS (cross-compiled with #VBCC, only things needed changing were POSIX `dirent.h` + `unistd.h` -> AmigaOS `dos.library` calls in the file device). Should be compatible with WB1.3, but I only tested on WB2.04 in FS-UAE so far.

Not fully working yet - `uxncli.68000 hexes.rom < hexes.tal` prints out data, Ctrl-C when done to exit (with exit code 20 indicating failure to the shell), but `uxncli.68000 asma.rom hexes.tal hexes2.rom` returns success (return code 0 printed in AmigaShell), but there is no output `hexes2.rom` file anywhere. Same output text as on Linux, just no output file appears...

```
Loaded asma.rom
0x003e lines of source code.
0x00be bytes of heap used, 0xd22b bytes free.
```

In case anyone else is running #varvara #uxn on raspberry pi, you can get a huge performance boost by enabling the opengl drivers. In my case, at full screen with zoom 2x, the sdl screen present method went from taking 2 seconds to just a couple milliseconds.

I wonder how do I want operating system for #uxn / #varvara to look like? Self-hosted, inside uxn, or hypervisor-like, outside of varvara?..

https://tilde.gay/~yottatsa/uxn-unx/