NullScript 1

Commands

These are NullScript 1's 8 commands:

tcell group
`,`	Print the current cell as a character
meta group
`<`	Move the cell pointer left.
`>`	Move the cell pointer right.
`*`	Push the current cell to the parameter queue
`'`	Take the value from the parameter queue and put it into the current cell
math group
`+`	Add two numbers from the parameter queue and put it into the current cell
jump group
`{`	If the current cell is 0, jump to the next `}`. If there is none, jump to the end of the program.
`}`	Jump to the previous `{`. If there is none, jump to the start of the program.

When a , is executed on a cell outside of the range of 0 to 127, it is undefined behavior.
When < would push the cell pointer below zero, the cell pointer wraps around to cell 255. Likewise, if > would push the cell pointer above 255, the cell pointer wraps around to zero.
When the parameter queue is empty and a command requires a value from the queue, the value is received from input.
If there is division by zero, the behavior is undefined.

The following numeric cat program repeats until the user inputs a value of zero:

',{',}