28 Mar
2005
28 Mar
'05
6:35 p.m.
F-series floating point op-codes are unique to F-series machines.
But all 21MX class machines have slower floating point instructions that
use the same op codes as the 2100 floating point option.
I suspect that this is what 2000/Access would be using.
----- Original Message -----
From: "Eric Smith" <eric at brouhaha.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: Sunday, March 27, 2005 11:25 PM
Subject: Re: another hp2100 wannabe
I wrote:
Now that I think about it more, I'm fairly
certain that it won't,
because 2000E (and 2000F and 2000/Access) require the floating point
microcode that is not available for the 2114/2115/2116.
Jay wrote:
Aha, but there WAS floating point available for
the 2116. A separate
rackmount box. I have no clue if it had the same interface as the later
FP
options.
But I wrote "require the floating point *microcode*" (emphasis added).
The 2152A floating point processor would not work with any version
of TSB.
I *think* a 21MX F-series (with hardware floating point) could probably
be used as the system processor for 2000E, 2000F, or 2000/Access, but I
don't have proof.
I just cleaned up my 2000 TSB model comparison chart a bit, though it
may still have some errors. It can be seen at:
http://www.brouhaha.com/~eric/retrocomputing/hp/2000/models.html
Eric