Subleq, 12 bytes (Assuming an 8 bit word)

9 -1 6 10 11 -1 8 8 0 88 1 24

Subleq emulator

64 bit word, 96 bytes

9 -1 6 10 11 -1 8 8 0 88 1 192

Subleq, 12 11 bytes (Assuming an 8 bit word)

2 -1 88 10 11 -1 8 8 0 1 22

Subleq emulator

Explanation

0:  2 -1 88 ' Output 2: "X"
3:  9 10 -1 ' 10: = 10: - 9:, if 10: <=0 exit
6:  8  8  0 ' 8: = 0, goto 0
9:  1 22    ' data

64 bit word, 96 88 bytes

2 -1 88 9 10 -1 8 8 0 1 176