VOGONS


First post, by BRBlosh

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I got a problem with Abit SM5-A. I´m using Pentium 133 with it, but i have to upgrade to 166. But, it won´t work with 166.
I´ve tried Pentium 100, AMD K5-100 and no problem, but 166 won´t boot, no beeps etc.

It have new BIOS, but not help at all.

Any ideas?

Thank you for any ideas.

Reply 3 of 7, by H3nrik V!

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Seems like maybe your 166 is defective? As far as I can see, the board is supposed to support up to 233 MMX processor?

Please use the "quote" option if asking questions to what I write - it will really up the chances of me noticing 😀

Reply 5 of 7, by dionb

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BRBlosh wrote on 2020-04-22, 12:56:

I forgot, in other boards the CPU works perfectly, without issues. The board won´t boot with MMX CPU.

Hang on, you didn't say 166MMX in the OP. That's a different CPU.

Can you take a pic of your motherboard, particularly the area below the socket. That is where the VRM is located - or may not be on yours.

Reply 6 of 7, by PC Hoarder Patrol

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^This

@BRBlosh , does your board look like this

abit sm5-A.jpg
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According to the Abit support page

Specifications: […]
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Specifications:

CPU
No jumpers or DIP switches needed to set CPU parameters
CPU operation stabilized by three voltage regulators with heat sink design
Supports 50, 55, 60, 66, 75*, 83* MHz CPU external clock speeds
Supports 100~200 MHz Pentium® processors and 166 ~ 233MHz Pentium® processors with MMXTM technology
Supports AMD-K5TM PR100~PR166 and AMD-K6TM/166 ~ 233 processors
Supports Cyrix 6x86TM/ 6x86LTM P150+ ~ P200+* and Cyrix 6x86MXTM -PR150 ~ PR200 processors*
Reserved circuitry for future processors

Reply 7 of 7, by BRBlosh

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This is a picture of my board. I don't want use MMX cpu, only i tried every cpu that i have.

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  • 20200423_082422.jpg
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    Abit sm5a
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