Based on the Catseye ROMA.
C Pushes 100 onto the stack.
D Pushes 500 onto the stack.
I Pushes 1 onto the stack.
L Pushes 50 onto the stack.
M Pushes 1000 onto the stack.
P Prints the top value on the stack in Roman numerals.
V Pushes 5 onto the stack.
X Pushes 10 onto the stack.