Available in the Jan 31 build and also known as the "nirvana engine" by Einar Saukas. NIRVANAM is used in z88dk to refer to nirvana and NIRVANAP is used to refer to nirvana+. NIRVANAP was added to z88dk in v1.99A.
README: http://z88dk.cvs.sourceforge.net/viewvc ... iew=markup
EXAMPLE: http://z88dk.cvs.sourceforge.net/viewvc ... _nirvanam/