Wanted: Faulty DRAM chips wanted!

[1024MAK]

If you have any suspect or known faulty DRAM chips, I'm after some so I can conduct some testing.

I only want chips that are DIL type, either 16 pin or 18 pin. And they must still have all of their legs!

So that includes:

• 16k x 1 bit types like HM4816, MK4116P-2, TMS4116, uPD416, 4116 etc,
• 32k x 1 bit types like 3732 etc, (as used on ZX Spectrum computers)
• 64k x 1 bit types like HM4864P, HYB4164P, KM4164, M5K4164ANP, MCM6665AP, MK4564N, MSM3764, TMS4164, uPD4164C, 4164 etc,
• 256k x 1 bit types like 41256 etc,
• 16k x 4 bit types like TMS4416 etc, and
• 64k x 4 bit types like 4464, 41464, KM41464A, SMJ4464 etc.

Please include a note telling me all that you know about why/what the fault is/was.

PM me for the address to send to.

Mark

[protek]

You still looking? I have a ragtag team of 4116s, or actually the variations of them.

[1024MAK]

Yep! The more suspect chips I have to test with, the better

Mark

[JonB]

Mark, are you planning on building a DRAM tester? That'd be pretty cool!

[1024MAK]

Yes, that's the plan

Mark

[JonB]

I have a bag of the buggers. Suspect 4116s that is. I could bring 'em to the 'fest next week if you like. However.. not sure if they really are toast or not - you know how impulsive I am with swapping out chips unnecessarily.. So if you find any good 'uns, I could use 'em back..

[1024MAK]

Yes please. The idea being to have a variety of chips so that I can check that the RAM tester can pick up faulty chips.

Of course you can have any working ones back

Mark