Features

• The shell is omega, a stack language.
• A line that fails is undone, and back undoes up to 64 lines that worked.
• Integers can be as big as 2^65536.
• omega and aleph0 are values you can do arithmetic with (ordinals).
• Code is compiled to x86-64 the second time it runs (JIT).
• Four tabs run at the same time.
• Everything runs in ring 0, so memory and I/O ports can be read and written from the prompt.
• There is no filesystem. An installed system saves after every line.
• Installed disks boot with Subverge's own bootloader.

Requirements

• QEMU. Subverge has never run on anything else.
• 256 MB of RAM for the virtual machine.
• A disk image you don't care about, if you want to install it.
• You need to know how to program already.

What it looks like

2 100 ^ .              1267650600228229401496703205376
[ dup * ] :sq          defines sq
7 sq .                 49
omega 1 + .            ω+1
1 omega + omega = .    1
omega 1 - .            ! ordinals only support + * and ^