Moditape

An esolang where you can modify the inital state of the circular, 16 value tape before the program is run. Contains brainfuck-like syntax, minus the loops. Because there are no I/O functions, you can watch the tape update as the program runs. Modifying the tape before the program runs can act as input.

Instructions

The instructions are as follows:

Command	Description
[	Shift pointer left
]	Shift pointer right
|	Increment cell under pointer
_	Decrement cell under pointer
:	Reverse the tape
#	Exit the program
&	Set the pointer to the cell value
?	If cell is 0, skip next instruction

Hello World

H]e]l]l]o],] ]W]o]r]l]d]!

Truth machine

_?#|]|]|]|]|]|]|]|]|]|]|]|]|]|]|]|] (To use, set the first cell to 1 or 0 before starting the program.)

99 Bottles Of Beer

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]b]o]t]t]l]e]s] ]o]f] b]e]e]r]!]
[[[[[[[[[[[[[[[[
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Reference Interpreter (Written in C, yes the code is bad)

https://paste.snwy.me/lghajYnP

To use the interpreter, pass in your file as so:

 moditape file.mt

Once you are in, you will see the tape. Use the left and right arrow keys to move the pointer, and up and down to increment/decrement. The pointer will stay at the position you leave it when you run the program. To run the program, press Enter.