Unknown card \ VOGONS

Unknown card

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First post, by leency

Posted on 2021-07-19, 11:20

leency Offline

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Hello everyone,

Recently I've got this card in the bunch of 486 PCs. I expect this a cache for motherboard or used for midi samples.
Google couldn't help.
Can anyone please help to identify this device?

Regards,
Leency

Reply 1 of 4, by imi

Posted on 2021-07-19, 12:02

imi Offline

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those seem to be SRAM chips, so a cache module most likely.

Reply 2 of 4, by dionb

Posted on 2021-07-19, 12:05

dionb Offline

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Could this be an Intel Turbo Cache module? That was a thing in early 486 (mainly OEM) era.

That said, iirc Turbo Cache was taller and narrower. This looks like it might have been for use in a laptop.

Edit:
Nope, not turbo cache, those things had a 485 cache controller on them too

Reply 3 of 4, by kdr

Posted on 2021-07-19, 12:22

kdr Offline

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Those chips are IDT 71256SA15Y - 32Kx8 with a speedy 15ns access time. So yeah, my guess is that it's a 256KB L2 cache module (plus a couple extra chips for the cache tags) for an 80486 motherboard.

Reply 4 of 4, by Doornkaat

Posted on 2021-07-19, 13:18

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Proprietary graphics card memory upgrade?

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