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Author Topic: is this ZIP RAM?  (Read 2091 times)

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Offline rkauer

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Re: is this ZIP RAM?
« on: May 05, 2008, 08:54:08 PM »
 What exactly is the ZIP chips name? With the "name" (code) we can dig the chip type.
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Offline rkauer

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Re: is this ZIP RAM?
« Reply #1 on: May 05, 2008, 10:26:40 PM »
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Zac67 wrote:
I'm not entirely sure this is DRAM - the lengthy package looks strange.
Can't find any decent details on the GD5422 though, only it's 32 bit memory interface and 1 MB max - 4x256K chips for sure.


 To achieve 1Mb you need 8 chips! 4bits x 256kb = 128kb.
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Offline rkauer

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Re: is this ZIP RAM?
« Reply #2 on: May 06, 2008, 08:32:01 PM »
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Zac67 wrote:
8x 4x256K = 32x256K == 8x1M  ;-)


 Nope.

 8x 1/2byte (4bit) x 256k (1/4 Mb) == 1Mb
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