Some cleanup and fixes. Details:

[ghost]

• sprintf automatically zero-terminates the string, so macAddress[18] = 0; isn't necessary
• reworked all strings to a table in order to improve readability, made it const-correct
• if osGetSystemVersionData succeeds, then it'll print out the info (which works perfectly on real hw)
• fixed indentation issues

[ghost]

By the way, here is a working pic

[joel16]

Looks good! Merging.