Porporo

Porporo is an experimental operating system specification for Varvara, written in TAL and ANSI C. This is a work in progress, for more details follow the development during december.

Build

To build the Uxn emulator, you must install SDL2 for your distro. If you are using a package manager:

sudo pacman -Sy sdl2             # Arch
sudo apt install libsdl2-dev     # Ubuntu
sudo xbps-install SDL2-devel     # Void Linux
brew install sdl2                # OS X

To build Porporo and the required roms:

make run

Controls

• F1, lock varvara.
• F2, center varvara.
• F4, exit varvara.
• F5, soft-reboot varvara.
• d, draw mode.
• m, move mode.

Menu.rom

• tab, see all files.
• esc, exit.
• mouse1, or enter, run file.
• mouse2m or shift+enter, send filename.

Wallpaper

The wallpaper rom expects a file named .wallpaper in the chr format that is large enough to fill the screen. The way I do it is by, first getting the screen size(let's say 1328x640), creating a wallpaper.tga image at that size, converting it with tgachr, generating a file named wallpapera6x50.chr, and finally renaming it to .wallpaper. Voila!

uxncli ~/roms/tgachr.rom wallpaper.tga
mv wallpapera6x50.chr .wallpaper

Messages

Porporo listens special console messages types:

• 0xff run command
• 0xfe set action type

Potato

Potato is the menubar rom that holds some of the state of porporo in its zero-page:

• 0x00* action vector
• 0x02 action value