=

Commands

= if the thing being assigned is a place:

   assign place with value(dec)/place value.

if the thing being assigned is a value:

   if the place value assigned recently equals to the first decimal number, jump forward the number of the second decimal number commands. Else, continue running.

Place value doesn't have "+" or "-".

4=+123 +143=-12

if anything is assigned to cell 0, print the ASCII value.

Examples

XKCD Random Number

0=+52

Interpreter

Python

tape={}
def read_tape(x):
    if x in tape:
        return tape[x]
    return 0
import sys
code=sys.stdin.read().split('\n')
ip=0
recent=0
while ip<len(code):
    try:
        lhs,rhs=code[ip].split('=')
    except:
        ip+=1
    else:
        if lhs.isdigit():
            if not int(lhs):
                if rhs.isdigit():
                    sys.stdout.write(chr(read_tape(int(rhs))))
                else:
                    sys.stdout.write(chr(int(rhs)))
            if rhs.isdigit():
                tape[int(lhs)]=read_tape(int(rhs))
            else:
                tape[int(lhs)]=int(rhs)
            recent=int(lhs)
            ip+=1
        else:
            if rhs.isdigit():
                val=read_tape(int(rhs))
            else:
                val=int(rhs)
            if val==read_tape(int(lhs)):
                ip+=val
            else:
                ip+=1