On Sat, 10 Apr 2004, Joe R. wrote:
You said it yourself:
"My understanding (from owning two since 1985) is that the "HP 64000" is a
product line. The development station mainframes (desktop, portable) "
Maybe I'm wrong but as I recall, the 64000 is a LARGE desktop unit with
about a 13 or 14 inch screen, keyboard etc all built into one BIG unit. The
64100 is portable machine that's similar is size and style to a Kaypro
computer (but slightly larger). The two do similar jobs but they're very
different in size and weight. Due to the very different styles of
construction and size, I'm sure that they use very different interface cards.
The 64100 is quite a bit larger (and heavier!) than a Kaypro portable
(trust me, I've hefted them). They do, in fact, use the same boards, but
the portable won't hold as many of them.