m912 with Ti 486 dx4 100? \ VOGONS

m912 with Ti 486 dx4 100?

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First post, by martinb

Posted on 2019-09-21, 13:47

martinb Offline

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Hi! first time here, i'm building a m912 😵 with a Ti 486 dx4 100, but in the manual I dont see any jumper spec to this cpu, is there any way to make it work? I assume this cpu is 33mhz bus multiplied by 3, but where are the multiplier jumpers for non intel dx4? 😢
Thanks so much!

Reply 1 of 4, by martinb

Posted on 2019-09-21, 13:52

martinb Offline

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By the way it's a m912 v1.4 with 256k real cache.

Reply 2 of 4, by Doornkaat

Posted on 2019-09-21, 16:32

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The Texas Instruments 486 use the Cyrix design.
Look up the configurations for Cyrix CPUs online. 😀

Reply 3 of 4, by martinb

Posted on 2019-09-21, 20:34

martinb Offline

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Tested the cyrix m7 and booted! The BIOS recognizes it as a 100mhz cx486dx2 Works well but hangs on games. I’m trying a Ti 486 dx2 80, maybe there is no such a big difference between this two cpus. Thanks ! 😊

Reply 4 of 4, by Doornkaat

Posted on 2019-09-21, 22:47

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Happy to hear it! 😀
Better not try the DX2 settings as they probably use 5V that will kill a DX4 which is supposed to be run at ~3.3V.

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