486 board POST without cache chips? \ VOGONS

486 board POST without cache chips?

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First post, by Paadam

Posted on 2016-10-23, 20:29

Paadam Offline

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Joined: 2016-09-04, 16:57
Location: Estonia

I have MSI MS-4145 (ver. 1) board that does not have any cache chips installed. Could that prevent it from booting?
I installed AM486DX2 66MHz CPU onto it, verified working FPM SIMM sticks and tried both with PCI (Trio64) and ISA (WD) graphics cards but no POST.
Verified jumper settings for CPU many times, seems to be correct. Board looks to be in perfect condition, I removed the barrel battery due to a bit of bulding (but no leakage at all), no damage (spill or mechanical) but nothing.
Also tested the AMI BIOS chip on another ALi M1489 board, it POST'ed without problems so BIOS is not an issue also..

Any ideas if the missing cache is not an issue?

Many 3Dfx and Pentium III-S stuff.
My amibay FS thread: www.amibay.com/showthread.php?88030-Man ... -370-dual)

Reply 1 of 3, by firage

Posted on 2016-10-23, 22:51

firage Offline

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Location: Finland

What about the rest of the jumpers? Doesn't it have some for setting the size of cache installed?

My big-red-switch 486

Reply 2 of 3, by PhilsComputerLab

Posted on 2016-10-23, 23:02

PhilsComputerLab Offline

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Joined: 2014-09-28, 03:33
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All my boards POST without cache. Regardless of the cache jumper setting. In fact, I don't recall these boards even having a jumper setting for no cache?

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