Uxn11

An emulator for the Uxn stack-machine, written in ANSI C.

Uxn11/System

This emulator's system device supports changing a stack's location to a page of memory. The default memory mapping is as follows:

• 0000-ffff, as RAM.
• 10000-100ff, as working stack.
• 10100-101ff, as return stack.

To use the last page of ram(0xff00) to host the working stack:

#ff .System/wst DEO

The stack mapping is 254 bytes of data, a byte for the pointer and a byte for an error code.

Building

Graphical

All you need is X11.

gcc -Os -DNDEBUG -g0 -s src/uxn.c src/devices/system.c src/devices/screen.c src/devices/controller.c src/devices/mouse.c src/devices/file.c src/devices/datetime.c src/uxn11.c -o bin/uxn11 -lX11

Terminal

If you wish to build the emulator without graphics mode:

gcc -Os -DNDEBUG -g0 -s src/uxn.c src/devices/system.c src/devices/file.c src/devices/datetime.c src/uxncli.c -o bin/uxncli

Usage

The first parameter is the rom file, the subsequent arguments will be accessible to the rom, via the Console vector.

bin/uxnemu bin/polycat.rom arg1 arg2

Devices

The file device is sandboxed, meaning that it should not be able to read or write outside of the working directory.

• 00 system
• 10 console
• 20 screen
• 30 audio(missing)
• 70 midi(missing)
• 80 controller
• 90 mouse
• a0 file(sandboxed)
• c0 datetime

Emulator Controls

• F2 print non-empty stacks
• F4 load boot.rom, or reload rom

Buttons

• LCTRL A
• LALT B
• LSHIFT SEL
• HOME START

Need a hand?

The following resources are a good place to start:

• XXIIVV — uxntal
• XXIIVV — uxntal cheatsheet
• XXIIVV — uxntal reference
• compudanzas — uxn tutorial

Contributing

Submit patches using git send-email to the ~rabbits/public-inbox mailing list.