Re: 1 meg RAM slinky.. which chips??

[dempson@atlantis.actrix.gen.nz (David Empson)]

In article <D0qHJG.FF3@torfree.net>,
Myles Fudge <ac027@freenet.toronto.on.ca> wrote:
> I have acquired the above mentioned RAM card and I have been told that I 
> should use RAM chips no slower than 100ns.  Can I use 150ns chips?  I 
> have been told by another to use 120ns chips.  The card already has eight 
> 4256-15 chips, so I assume that 150ns chips will be okay.  I just got the 
> impression that the card couldn't operate with DRAM slower than 41256-10.
> Thanks for any info.

150 ns RAM chips should be fine.  If in doubt, use 120 ns.  You
certainly won't need 100 ns or faster.

Even the IIgs memory card (running at 2.8 MHz) uses 150 ns (120 ns in
some cases).  Standard slot cards are only accessed at 1 MHz, so
slower RAM will be OK.
-- 
David Empson
dempson@actrix.gen.nz
Snail mail: P.O. Box 27-103, Wellington, New Zealand