Re: VIC-II DRAM refresh

Date: Fri, 14 Oct 2016 13:21:10 +0200
Message-Id: <>
> On 2016-10-14, at 12:52, Francesco Messineo <> wrote:
>> Not much since the MT4264 have been working fine for years and only lately
>> started failing and when they fail it's a consistant pattern of not the
>> whole chip failing but a number of cells.
> that's almost always how DRAM chip fail.

I'd say the "meltdown" (as Gerrit called it) is at least as common. But that probably also depends on the brand. And if I am to think about it, I'd also say that I (probably - about 4ms of lack of refresh on those memcells :) had more cases when the chip was plain dead, poisoning the bus or so than cases where some cells failed but the chip was otherwise working. Summarising, I'd say the "almost always" part of your statement is what I find hard to agree with ;-)


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Received on 2016-10-14 12:00:50

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