#[S.I.L.O.S](http://rjhunjhunwala.github.io/S.I.L.O.S/) <s>112</s> 110 bytes
<pre>
loadLine 
def : lbl
print Hello 
a=256
:a
x=get a
if x c
if 1 e
:c
printChar x
a+1
if x a
lble
print , I'm S.I.L.O.S
</pre>
It should be loosely readable. Just a trivial modification of the cat program

[Try it online!](http://silos.tryitonline.net/#code=bG9hZExpbmUgCnByaW50IEhlbGxvIAphPTI1NgpsYmxhCng9Z2V0IGEKaWYgeCBjCmlmIDEgZQpsYmxjCnByaW50Q2hhciB4CmEgKyAxCmlmIHggYQpsYmxlCnByaW50ICwgSSdtIFMuSS5MLk8uUw&input=&args=dGVzdA)