VM is a project mainly written in Python, it's free.
A simple programming language interpreter, written in python.
So-Far Unnamed Thingy is a simple command interpreter I wrote for fun using Python. Programs are text files, with a single instruction on each line. Some instructions take an argument, which comes after the instruction name, separated by a space. Whitespace at the beginning of lines has no effect.
There are two storage areas - the memory, and the accumulator. The memory is a theoretically-infinite set of integers, addressable using integers. The accumulator is where calculations are carried out. All integers are potentially infinite in length.
Any instruction which takes a memory address as its argument can also take a pointer. (eg, using a memory location to store a memory address) Pointers are specified by prefixing the address with a P, eg 'P23'.
Values can be read-in from the user using GET and GETC, for getting integers and characters respectively. PRINT and PRINTC output a given variable as an integer or character. PRINTSTRING outputs the given string, but this output is not currently alterable during runtime.
ADD: Add value from address ADDVAL: Add value AND: Performs a bitwise AND on the accumulator and the given address DEBUG: Outputs all memory, and accumulator values END: Ends the program GET: Get a value from the user and store it at the address GETC: Get a character from the user and store the ascii value at the address GOTO: Go straight to the given line of the program (Files start line 1) IFNEG: Only executes next instruction if the value of the accumulator is < 0 IFPOS: Only executes next instruction if the value of the accumulator is > 0 LOAD: Load value from address LOADVAL: Load given value NOT: Doews a binary-invert on the accumulator OR: Performs a bitwise OR on the accumulator and the given address PRINT: Output value from address PRINTC: Outputs value from address, as ASCII character PRINTSTRING: Outputs the remainder of the line to the user SKIP: Jump over the given number of lines. STORE: Save current value to address XOR: Performs a bitwise XOR on the accumulator and the given address
REM is used to denote a comment.