[Vm-beginners] Converting between Word and Byte Array

[Lars]

Hello,
I'm at the moment working with ARM code, and the most convenient way to 
create memory chunks with instructions is word wise, by creating 
WordArray instances.
But for some primitives, it would be better to have ByteArrays, because 
all pointers are byte-offsets. So borders have to be multiplied by 4, 
etc. Is there a convenient way to create one from the other?
The 'asByteArray' or 'ByteArray newFrom:' both don't do the job.
Thank you,
Lars