Skip site navigation (1)Skip section navigation (2)
Date:      Mon, 09 Apr 2007 18:38:10 +0200
From:      des@des.no (Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?=)
To:        "Gray, David W" <David.W.Gray@nielsen.com>
Cc:        freebsd-chat@freebsd.org
Subject:   Re: what can i do with a 486?
Message-ID:  <868xd1ec5p.fsf@dwp.des.no>
In-Reply-To: <3428D9627CC79A4ABF37A519431D98120D685FA7@nmr001oldmsx05.enterprisenet.org> (David W. Gray's message of "Mon, 9 Apr 2007 09:04:33 -0400")
References:  <3428D9627CC79A4ABF37A519431D98120D685FA7@nmr001oldmsx05.enterprisenet.org>

next in thread | previous in thread | raw e-mail | index | archive | help
"Gray, David W" <David.W.Gray@nielsen.com> writes:
> Is that a 48*6* or a 48*7*??? You MUST HAVE a floating point
> emulator if you don't have a '487 (also known as a '486 overdrive),
> or no boot.

The 487 was not a "486 overdrive", but an add-on FP unit for the 486SX
(which shipped with the built-in FP unit physically disabled).  The
"overdrive" was Pentium chip that fit in a 486 socket, and later also
early Pentium sockets (so you could fit a 120 MHz Pentium Overdrive on
a 60 MHz board, similar to the 486 DX2 which ran at twice the speed of
the motherboard).

DES
--=20
Dag-Erling Sm=F8rgrav - des@des.no



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?868xd1ec5p.fsf>