Unsquare

Unsquare was named after Dave Brubeck's Unsquare Dance. Unsquare Dance is unusual in rhythm, and so is the esolang.

Instructions

Command	Meaning
O	Push 0.
I	Push 1.
A	Pop the top of the stack into the accumulator.
S	Swap the top 2 items of the stack.
+	Add 2 to the accumulator.
-	Subtract 2 from the accumulator.
x	Multiply the accumulator by 2
P	Push the accumulator.
o	Output the top of the stack. (Note: This does not discard the top of the stack.)
i	Wait for user input, then push it onto the stack.
>	If the accumulator is 0 or 1, jump to the corresponding <.
<	If the accumulator is not 0 nor 1, jump to the corresponding >.

Examples

Hello, world!

Note: This was made before multiplication.

OA++++++++++++++++++++++++++++++++++++oIA++++++++++++++++++++++++++++++++++++++++++++++++++oOA+++++++++++++++++++++++++++++++++++++++++++++++++++ooIA++++++++++++++++++++++++++++++++++++++++++++++++++++oOA++++++++++++++++++++++o------oIA+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++o----oOA+++++++++++++++++++++++++++++++++++++++++++++++++++++++++o---o----o

Cat program

iA>PoiA<

Truth-machine

ioAx>Io<

Implementations

A Ruby interpreter and x86 assembly compiler (written in Python) by User:Bangyen.