Warning: If you are
here then you agree that I cannot be held at
fault
should you damage your hardware as this is
untested/unproven content.
Please note that if you have tired to contact me
in the past using the address below and got no
reply chances are you were filtered out as spam.
So please post your question to the eMachine
Upgraders forum.
Tools Needed:
1x Soldering Iron
1x New very small/fine tipped solder tip
1x Some solder lead
4x 10K Resistors
Some Small wires.
Some free time.
Before doing this you should remove the
motherboard from the case and remove everything
from the motherboard (such as cpu and ram and
such) just to be safe and for extra free space.
Make sure you're discharged of any static
electricity and wear an anti-static wrist strap.
It should be noted I haven't tested this and its
only theory as I haven't a motherboard with the
ICS 9248-99 Clock Generator. If you test this
and find it to work please please email me at:
-e-n-i-g-m-a--d-e-a-d-s-o-u-l-s- -a-t-
-y-a-h-o-o- -d-o-t- -c-o-m- (remove all dashes,
replace "-a-t-" with "@" and "-d-o-t-" with "."
I do that so the spam bots do not pick up my
email address)
It's recommended you do some cpu benchmarks
before and after to see what kind of performance
gain you might have gained! You might use
SiSoft's Sandra or some other popular
benchmarking test to get a good idea. When
emailing me send me your test results and
screenshots as long as they are under 640x480
and 50kb in size.. also send me pictures of your
modded ICS 9248-99 PLL, and give me your website
info if you wish for me to post it at the bottom
of this page.
Here is an image of the Pin-Out of the
ICS9248-99.
Here is an list
of supported FSB's of the the ICS9248-99
We are going to
leave all of the pins connected as they are all
I/O pins. First we need to connect power to the
jumper blocks for logic "1", to do this we will
use VDDREF (Pin 2) which supplies a nice 3.3v.
Connect VDDREF to pin 1 on the jumper blocks
like shown in the picture below. Now we need to
connect ground to the jumper blocks for logic
"0", however according to the ICS9248-99
datasheet all the FSx Pins are connected
internally to ground so leaving them open should
also in theory set logic "0". However for this
demonstration we are going to connect GNDREF
(Pin 5) to pin 3 on all of the jumper blocks
like shown in the picture below. Need we are
going to connect FS0 (Pin 10) to pin 2 on the
first jumper block with a 10K resistor inline,
then FS1 (Pin 11) to pin 2 on the second jumper
block with a 10K resistor inline, then FS2 (Pin
12) to pin 2 on the third jumper block with a
10K resistor inline, and finally FS3 (Pin 1) to
pin 2 on the fourth jumper block with a 10K
resistor inline, all like shown in the picture
below.
Now to overclock,
using the FSB chart above, if it calls for a
logic "1" on FS0 connect the FS0 jumper block
middle FS0 pin to the VDDREF pin on the jumper
block, if it calls for logic "0" connect the
middle FS0 pin to the GNDREF pin on the jumper
block. The same hold true for all of the pins.
Using the above FSB chart as a key it will tell
you what to set each pin to for various FSB's.
Written at:13:32 PM EST, Saturday, March 13th,
2004 - Revision 0
Written by: Enigma Deadsouls
Website: http://www.geocities.com/enigmadeadsouls
Names/Info from people who have emailed me their
test results:
None at this time.
You are free to mirror this page as long as you
give me credit and do not change any of the info
unless you ask me first... however you're free
to change text font, size, color background
color/image to match you're site. You're also
free to remove my navigation bar at the bottom
of this page as I'm sure it would be
pointless on your site... in other words I'm ok
with changes as long as its not to the info
unless otherwise approved by me. Also if you
mirror it email me and give me a link and I'll
link to it here.
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