Hi, The recent discussions of the HP 8x machines reminded me: I'm looking for an Extended Mass Storage ROM for an HP 87 (and for an HP 85, for that matter). The part number is: HP 00087-15013 Extended Mass Storage ROM for HP-86/87 HP 00085-15013 Extended Mass Storage ROM for HP-83/85 I could probably find some 8x stuff to trade for one. thanks, Stan Stan Sieler sieler(a)allegro.com www.allegro.com/sieler/wanted/index.html www.allegro.com/sieler