AMD k6-2 475mhz on sy -5EH

External Since: Feb 26, 2004 Posts: 2

Ive got this old computer with a soyo mainboard, sy -5EH (M or 5, dont
know, whats the difference?). It has been running perfect for 5 years
with an AMD k6-2 300mhz cpu. Now im trying to upgrade this system with
an AMD k6-2 475mhz cpu (AHX 2.4V Core), but I cant get the board to
boot after installing it.

The settings Ive tried so far are:

for 475MHz
JP30 -> 7-8, 9-10 closed, rest open for 2.4V
SW1 -> off on on on off on for mult 5x and cpu bus at 95mhz
JP7 -> 1-2
JP9 -> 2-3
JP10 -> 1-2

for 450MHz
JP30 -> 7-8, 9-10 closed, rest open for 2.4V
SW1 -> on on on off off on for mult 4.5x and cpu bus at 100mhz
JP7 -> 1-2
JP9 -> 2-3
JP10 -> 1-2

None of these settings work. Ive located a jumper on the board, JP4,
but I cant find anything in the manual, addendum or the qs guide about
this jumper. What is it for?

Grateful for any help
rino

External Since: Jul 16, 2003 Posts: 12

Not sure about the settings, although, I have seen several different
versions of the board and one manual does not work with all versions. I
would try to run the 475 with the 300 settings to see if it works. Might try
downloading a different version of the manual also. I'd suspect a voltage
setting problem.

Difference in a 5EH5 and 5EHM is the amount of onboard cash. the 5 has 500k
and the M 1 meg. You can tell which it is by looking at the cache chips - if
both are there, it's an M.

mike in montana

"rino" <rickard.nordin DeleteThis @pp.itv.se> wrote in message
news:f53c9995.0402260955.4732768b@posting.google.com...
> Ive got this old computer with a soyo mainboard, sy -5EH (M or 5, dont
> know, whats the difference?). It has been running perfect for 5 years
> with an AMD k6-2 300mhz cpu. Now im trying to upgrade this system with
> an AMD k6-2 475mhz cpu (AHX 2.4V Core), but I cant get the board to
> boot after installing it.
>
> The settings Ive tried so far are:
>
> for 475MHz
> JP30 -> 7-8, 9-10 closed, rest open for 2.4V
> SW1 -> off on on on off on for mult 5x and cpu bus at 95mhz
> JP7 -> 1-2
> JP9 -> 2-3
> JP10 -> 1-2
>
> for 450MHz
> JP30 -> 7-8, 9-10 closed, rest open for 2.4V
> SW1 -> on on on off off on for mult 4.5x and cpu bus at 100mhz
> JP7 -> 1-2
> JP9 -> 2-3
> JP10 -> 1-2
>
> None of these settings work. Ive located a jumper on the board, JP4,
> but I cant find anything in the manual, addendum or the qs guide about
> this jumper. What is it for?
>
> Grateful for any help
> rino