23 Nov
2000
23 Nov
'00
5:34 p.m.
Pete:
Is this thing L-Shaped? If it is, then this is the 'l-board'
that goes into Hp 9000/375 (I have one of these sitting in my
garage).
Anyways, many of these were swapped out in favor of a *real*
68040 running at 25 or 33 Mc. HP used these boards because
(presumably) they had their 68040 system board laid out and
ready to go but Moto didn't quite have the silicon yet.
SO they outfitted the 9000/375 with this kludge (that used a
68030), and the later 380's were the same hardware with the
real processor installed, instead of the L-board.
The SC140475RC50 is a 68030 (custom spec'd in some manner)
running at 50Mc.
I would be really curious to know if this thing functions
as an '040 in other systems . . .
Jeff
On Thu, 23 Nov 2000 23:54:35 GMT pete(a)dunnington.u-net.com (Pete
Turnbull) writes:
I've found an HP board, which has "HP
03812L" and then "98574-66513"
on it.
I think this is a part for an HP9000 system, more precisely a "68040
EMULATION PROCESSOR". Is this something you can plug in in place of
a real
68040, and if so might it work in anything other than an HP9000?
It sounds plausible, since it has an SC140475RC50 (looks like some
kind of
processor?) and an XC68882RC50A (FPU) on it, as well as an MK4202P
(eh?),
some fast logic, some cache RAM, and a 184-pin "plug" that obviously
plugs
into something like a processor socket. I was given it for the
68882, for
use in a Mac, but I'm wondering if it's better left intact...
BTW, anyone know the difference between an MC68882 and XC68882?
--
Pete Peter Turnbull
Network Manager
Dept. of Computer
Science
University of York
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