Fibonacci program is broken

[tinywombat765]

The Fibonacci program spits out:
1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89>5X@G4X@U9X@m3X@�2X@�5X@37X@�2X@�9X@|1X@$:
on my machine.

[insipx]

Just added a rot13 program (which works), will look into the fibonacci program, however. It seems to work at the beginning, suggests it may be something with data pointer increments