Modiv

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Modiv is an esoteric programming language created in 2025. It is based on a simple idea: the only memory provided is a single accumulator.

The name Modiv is a blend of the words mod and div, referencing the CJUMP instruction that used to combine both modulus and division operations.

Language Overview

Modiv programs consist of assembly-like commands, arithmetic expressions, and labels.

Commands

SET X - Sets the accumulator to the value of expression X.

CJUMP L X - If X != 0, it and jumps to label L.

JUMP L - Unconditional jump to label L.

AOUT X - Outputs the value of expression X as an ASCII character.

DOUT X - Outputs the value of expression X as a decimal number.

Expressions

Expressions support:

• Literals (e.g., 42)
• Arithmetic operations: +, -, *, ^, /(integer result)
• Keywords:

1. acc — the current value of the accumulator
2. din — read a decimal value from input
3. ain — read an ASCII character from input
4. nmod(x) - a the number of times acc can be divided by x without creating a reminder

Labels

A label is defined as:

:labelName

It can be the target of a JUMP or CJUMP.

Example Programs

Echo a single character:

SET ain
AOUT acc

Cat

:cat
SET ain
AOUT acc
JUMP cat

XDC random number

DOUT 4

A + B problem

SET (2^din) * (3^din)
DOUT nmod(2)+nmod(3)

Computational class

Modiv can be easily mapped to The section 14.2 Minsky machine

Minsky machine       Modiv
multiply by a        SET acc*a
check if divisible
by a, else branch    CJUMP L nmod(a)
                     SET acc/a at L

Implementation

An interpreter was made by the creator of the language (User:Krolkrol), you can see it here https://github.com/Dfgsgh/Modiv