Intel 486dx4-100 overdrive running @ 75mhz ? ( solved )

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Reply 20 of 22, by oeuvre

Posted on 2019-08-13, 13:10

oeuvre Offline

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time to put those jumpers into oeuvredrive

HP Z420 Workstation Intel Xeon E5-1620, 32GB, RADEON HD7850 2GB, SSD + HD, XP/7

Reply 21 of 22, by Intel486dx33

Posted on 2019-08-13, 14:22

Intel486dx33 Offline

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Vegge wrote:
Did some more research based on my guess of J35, J36 and J37 that are close to the frequencygenerator. Came up with this.

2155.jpg

So it seems that J37 switches between 25 and 33MHz bus.

Yes ! Now it’s working at 100mhz.
I removed jumper 37 and set the other CPU jumpers to work with Overdive CPU.

Thanks peoples.

Reply 22 of 22, by oeuvre

Posted on 2019-08-13, 15:28

oeuvre Offline

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Posts: 3231
Joined: 2015-03-31, 13:31
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Good stuff!

HP Z420 Workstation Intel Xeon E5-1620, 32GB, RADEON HD7850 2GB, SSD + HD, XP/7

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