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dram speed for 8088-10mhz

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First post, by noshutdown

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i got a generic xt-clone board with fujitsu 8088-10mhz, the problem is it comes without any dram chip, so i have to find them by myself.
the problem is, that it used 18*41256 dram chips for 512kb, and 4*4464 with 2*4164(ecc) dram chips for another 128kb, so i have to purchase at least three models of dram chips.
i can find 41256 and 4464 chips at -100, but the 4164 chips are so old that i can only find -120 ones(4164-100 chips seemed to be quite rare anyway), can that run at 10mhz?
also, would it cause isa bus to be unstable? since isa standard is 8mhz.

Reply 1 of 1, by wiretap

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The DRAM should be 120 nanosecond speed rated (or better) when using a 10MHz 8088. You can expand your search options by looking at DRAM equivalent replacements. Many are still manufactured today (Samsung, Vishay, NEC, Toshiba, etc.). Or, buy a dead motherboard or two and test/salvage the DRAM from it.

You can look here from some part number cross references:
4164 chips: http://www.minuszerodegrees.net/memory/4164.htm
41256 chips: : http://www.minuszerodegrees.net/memory/41256.htm

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