Amd 5x86p75 setings \ VOGONS

Amd 5x86p75 setings

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First post, by escarioth

Posted on 2016-10-08, 15:23

escarioth Offline

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Posts: 53
Joined: 2016-10-01, 03:18

Hi i finally found some help regarding my motherboard's manual
i can at last install the AMD 5x86 P75
you can see it here :

http://stason.org/TULARC/pc/motherboards/I/IN … IC-PCI-LPX.html

now, using Chkcpu i looked if my current setup can manage to get it to run at 133mhz
but its stuck at multiplier 3x so it only goes to 100mhz. (dont know how to put it at 2x)

i know after reading a lot around that i need to put volts to 3.3
-Jumpers J1A1-A2 and J2A1-A2 are closed.

CPU speed is set at 33mhz
-Jumpers J1F1-F2 are closed

But i'm confuse about the Pentium overdrive, SL and SX/DX options.
i tried to seek some infos but probably because im not natively speaking english..
i think i may have misunderstood some of the informations.. so i asking some help 😀

can i get it to run at 133mhz ?
and do i need a fan like it says ? i put a heat dispenser didnt think it needed a fan that bad.

Last edited by escarioth on 2016-10-08, 15:37. Edited 1 time in total.

even if they're old....those old dos games are still the best!!!

Reply 1 of 4, by PhilsComputerLab

Posted on 2016-10-08, 15:36

PhilsComputerLab Offline

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Hmm, doesn't that AMD chip interpret 2x as 4x? So jumper it for a DX2 and you should be good to go.

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Reply 2 of 4, by escarioth

Posted on 2016-10-08, 15:38

escarioth Offline

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Rank: Newbie
Posts: 53
Joined: 2016-10-01, 03:18

so SX/DX jumper should be put on DX ?
because if you look at the URL i put up there.
looking around the jumpers... i didnt see anywhere where to put it it at 2x..
unless its the DX option

even if they're old....those old dos games are still the best!!!

Reply 3 of 4, by mrau

Posted on 2016-10-08, 15:45

mrau Offline

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Joined: 2015-11-28, 12:43

set to 66 mhz as far as i ca understand this, the rest stays as usually with a dx cpu, not sure about that cache cetting;

Reply 4 of 4, by escarioth

Posted on 2016-10-08, 15:59

escarioth Offline

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Rank: Newbie
Posts: 53
Joined: 2016-10-01, 03:18

Hmm..
jumper sets
-66mhz -------------------------J1A1-A2 pins 1-2 closed
-SL-Enhanced -----------------J5A2 pins 1-2 closed
-non-SX ------------------------J5A3 pins 1-2 closed
-Pentium overdrive disable -J4A2 pins 1-2 closed
-3.3 volts ----------------------J1A1-A2 & J2A1-A2 - pins 1-2 closed

and cpuchk still says multiplier 3x. Bios dont help much better by saying its a basic 486DX33...but i'd guess it just dont see it

even if they're old....those old dos games are still the best!!!

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