1771 floppy controller questions

From: Tothwolf <tothwolf_at_concentric.net>
Date: Thu Nov 22 05:20:27 2001

On Wed, 21 Nov 2001, Richard Erlacher wrote:
> From: "Tothwolf" <tothwolf_at_concentric.net>
>
> > I bought a used dip style dram tester set about a year ago. It only cost
> > me $5, and I figured it might be useful for testing all the old 64k and
> > 256k drams I seem to run into in old pcs. I haven't yet had a chance to
> > use it yet. Maybe it will help with these old boxes...
>
> You'll want to be careful with the early DRAMs, as they used 3 supply
> rails, and your tester of 5-volt-only DRAMs may die from application
> to a 3-supply DRAM.

Thanks for the warning, I'll make sure to double check the datasheets
before I try to test chips with it. I guess if I have to, I could make an
adapter of somesort to test older chips too...

-Toth
Received on Thu Nov 22 2001 - 05:20:27 GMT