PKG_RST20_OZTR, Internal CALL_OZ substitution & call-tracing facility

rst $08, defw $2c0f


IN:	-
OUT:	-

Registers changed after return:
  ........afbcdehl/IXIY same
  AFBCDEHL......../.... different

Notes:
	Called directly; not a true package call
	For internal use only
