| Add 1 to Rn | Add # to Rn |
Go forward n | Go backward n |
Cases on Rn |
| 1n# | 1n## |
1n### | 1n#### |
1n##### |
Registers are processed as queues: first in, first out.
All numbers are written in unary.
The first two types of instructions add symbols to the right ends of the registers.
Case instructions pop symbols from the left ends. They work as follows:
If Rn is empty, we go to the very next instruction.
If the first symbol of Rn is 1, delete it and count down two instructions.
If the first symbol of Rn is #, delete it and count down three
instructions.
|
Instructions are sequences of 1s and #s,
and programs are sequences of
instructions.
In the interpreter, spaces inside of instructions don't count.
You may enter each instruction on a line of its own, and you
also may skip lines.
Alternatively, a program may look like a long
sequence of instructions run together.