Uxn is a stack-machine with 32 instructions.
Uxn is a portable 8-bit virtual computer inspired by forth-machines, capable of running simple tools and games programmable in its own unique assembly language.
It was designed with an implementation-first mindset with the goal of targeting salvaged computers, the distribution of Uxn projects is akin to sharing game roms for any classic console emulator.
Memory
| Stacks | Working Stack | Pointer | 1 byte |
|---|---|---|---|
| Data | 256 bytes | ||
| Return Stack | Pointer | 1 byte | |
| Data | 256 bytes | ||
| Memory | RAM | Pointer | 1 short |
| Data | 64kb |
The CPU can tunnel through 128 subroutines and find its way back with its return stack. The CPU can connect to up to 16 devices at once, devices can be peripherals such as screens and controllers, or even an other Uxn CPU.