At 08:48 AM 1/21/99 +0000, Joe <rigdonj(a)intellistar.net> wrote: Well, I've heard of them Joe. Betcha Allison has heard of them too. Back "In The Olde Days" when product development was moved down from our soon-to-be-ex-parent company (Bausch &Lomb) we were still using a 2 MHz Z80 in our high-end product. This was about 1983 I think. Two Zilog development systems were sent down with all the other tools. They could not emulate the newer 4 MHz Z80 CPUs we were going to design with so we had to figure out something else. We could NOT afford the big prices asked for a Zilog, HP, Tek or Kontron development system (we were cast off on our own as a separate "profit center" during that early '80's recession before being bought by a German company in Jan. '85. Sink or swim, as it were.) The Blue Thunder products were released around then and that seemed to be our solution! We started getting the then-new Zenith Z150 series PCs and Blue Thunders to use as Z80 development platforms. Today, I have one of the old Zilog devel. systems, couple of the Z150's and a couple of Blue Thunders in my collection. And as for you Bob, I do have the software. Now, since we recently moved (and you folks have heard me say this before), I have to hunt through a houseful of boxes to find just where the h*** the danged stuff is. :) Email me privately. Regards, Chris -- -- Christian Fandt, Electronic/Electrical Historian Jamestown, NY USA cfandt(a)netsync.net Member of Antique Wireless Association URL: http://www.ggw.org/freenet/a/awa/