A bug has been found with embedded code 7 which prints an external string pointed at by a memory address.
Again, fixes can be made by grabbing a new version of SP1PRINTSTRING.asm from cvs and then recompiling the library:
(spectrum) http://z88dk.cvs.sourceforge.net/z88dk/ ... iew=markup
(zx81hr) http://z88dk.cvs.sourceforge.net/z88dk/ ... iew=markup
(ts2068hr) http://z88dk.cvs.sourceforge.net/z88dk/ ... iew=markup