VOGONS


First post, by DimSumthing

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Hey there, folks! Long-time unregistered lurker, first-time registered poster.

First, I'd like to apologize in advanced if my forum etiquette is a bit rusty (it's been a few years)! If this isn't the correct place to post this, I'd appreciate a heads-up. 😀

I've recently acquired a Biostar M5ALA v2 motherboard, but I noticed that two capacitors seem to have been pulled out (see circled areas in pictures below). Would anyone know where I might be able to find information about the values of these missing caps?

Thank you!

M5-ALA-CAPS.png

Reply 1 of 3, by pentiumspeed

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Cache IC is rated at 66MHz, denoted by "10ns" on the cache IC. You need 5ns cache to reach rated 100MHz.

Cheers,

Great Northern aka Canada.

Reply 2 of 3, by rasz_pl

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CT2 looks to be the same as CT1. CT25 looks like same cap as the one ear Tag ram above mosys chip.

https://github.com/raszpl/sigrok-disk FM/MFM/RLL decoder
https://github.com/raszpl/FIC-486-GAC-2-Cache-Module (AT&T Globalyst)
https://github.com/raszpl/386RC-16 ram board
https://github.com/raszpl/440BX Reference Design adapted to Kicad

Reply 3 of 3, by majestyk

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pentiumspeed wrote on 2022-10-24, 19:44:

Cache IC is rated at 66MHz, denoted by "10ns" on the cache IC. You need 5ns cache to reach rated 100MHz.

Cheers,

MoSys, like Samsung and others, has their own naming scheme: "-10" does not mean 10nS, but 100 MHz.
So everything´s alright here!

https://www.digchip.com/datasheets/parts/data … 364K64L-pdf.php