Bosol

Bosol is an esoteric programming language designed by User:Zurek in 2025. It features a compact set of registers and minimalistic stack and list operations, with a focus on character manipulation and simple flow control.

Overview

Bosol uses a small number of registers and two data structures (a stack and a list) to perform computations. It is designed for simplicity, experimentation, and a degree of obfuscation typical of esoteric languages.

Registers and Data Structures

Registers

• A – General-purpose register. Accepts character or integer input.
• R – Temporary register. Used for arithmetic or to manipulate list L.
• X, Y – Registers used only with stack D.
• P – Program counter. Changing it will jump to another line (used for loops and conditional execution).

Stacks / Lists

• D – A "mini" stack that holds up to 2 items. Works only with X and Y. Items are popped on use.
• L – A general-purpose list that can be manipulated using register R.

Commands

Unary Operations

• +A++ – Increment A by 1.
• -A-- – Decrement A by 1 (or delete item with highest index if used on a list).

Binary Arithmetic

If second operand is D, the top item is popped and used:

• +AR+ – A = A + R
• -AR- – A = A - R
• *AR* – A = A * R
• /AR/ – A = A / R

Assignment

• =AR= – Assign R to A. Works only on A, R, X, Y, and P.

Input / Output

Input

• =AI= – Input integer to A.
• @AI@ – Input ASCII character to A (converted to integer).
• @LI@ – Input string to L (converted to list of ASCII integers).

Output

• (D cannot be used for output)*
• prtA – Print integer value of A.
• ascA – Print ASCII character corresponding to value in A.

Stack and List Operations

Stack D

• PXD – Push X to D.
• PYD – Push Y to D.

List L

• +LR+ – Add R to L.
• -LR- – Remove all items from L that equal R.

Flow Control

• ==AR== – Execute next line only if A == R.
• =<AR<= – Execute next line only if A > R.

Note: P automatically increments after each line. e.g., line 3 with +AP+ sets A = A + 4.

Errors

• Booooo – General error.
• SOOOOOO BOOOOOO {line} – Unknown or invalid command at given line.

Examples

Print ASCII Character

+A++     # A = 1
+A++     # A = 2
*AA*     # A = 4
*AA*     # A = 16
*AP*     # A = 64
+A++     # A = 65
ascA     # Output: A

Truth Machine

=AI=
+D++
+D++
*DD*

==AR==
+PD+
+R++
prtR
-P--
prtR

Cat Program

@LI@
ascL
=PA=

External Links

   GitHub repository