I've stumbled upon a listing in what seems to be a well respected book, that just won't work for me.
I'm using Spectaculator and it is line 150 where I have the pproblem.
The book is Spectrum Machine Language for the Absolute Beginner by Melbourne House/William Tang and can be downloaded at...
http://www.retro8bitcomputers.co.uk/Boo ... teBeginner
I've attached/inlined a copy of the entire listing.
There are way smarter people here than myself and I am thankful to anyone that takes a look, even more so, if you can tell me where the error lies, and how to correct it.
Many thanks, JJH