This is G o o g l e's cache of http://www.doc.ic.ac.uk/~epa98/work/todo/486/486t.
G o o g l e's cache is the snapshot that we took of the page as we crawled the web.
The page may have changed since that time. Click here for the current page without highlighting. To link to or bookmark this page, use the following url: http://www.google.com/search?q=cache:www.doc.ic.ac.uk/~epa98/work/todo/486/486t+&hl=en&ie=UTF-8
Google is not affiliated with the authors of this page nor responsible for its content. |
|
From David@gilanet.com Wed Jul 5 18:08:21 2000
Date: Tue, 4 Jul 2000 22:37:41 -0600
From: David L. Beem <David@gilanet.com>
To: epa98@doc.ic.ac.uk
Subject: 486 pinouts
[ Part 1.1, Text/PLAIN 18 lines. ]
[ Unable to print this part. ]
Ed,
Sorry I have been delayed in sending this to you. I was participating
in events about that mutual unplesantness 224 years ago. Back to the 486
talk. I have included a text file showing the pin layout from above (like
you were looking at the top of the socket). Of interest is is pin B13. My
notes show that it is tied low (electrical ground) for a DX2 processor
(or even a SX, DX, or SX2), and tied high (+5VDC) for a DX4. I also have
R17 labeled "Clock Mul" in my notes, but I have forgotten what I meant
when I wrote it. Probably more for the AMD 486 (which I have worked with
too). Pin D4 will only be on the few Intel processors I refered to that
disable the original processor. If you need further information about the
other pins just ask, or you should be able to still find it on the AMD
site.
David
David@gilanet.com
[ Part 2, Text/PLAIN (Name: "486pins.txt") 24 lines. ]
[ Unable to print this part. ]