Subject: Re: AE GS~RAM III question
From: Rubywand <rubywand@swbell.net>
Date: Sun, Dec 20, 1998 22Ç58@
Message-id: <367DE391.E9150CC2@swbell.net>



D3f0k9r7j1 writes ...
> 
> I have obtained an Applied Engineering GS~RAM III memory card for
> the IIGS.  It appears to be expandable to 4 megabytes of RAM, but
> I currently have only one megabyte.  It has 8 20-pin ZIP sockets.
> The two chips currently in it say:
> 
> OKI JAPAN 9A9Z
> M514402-80Z
> 91045507
> 
> From this, I believe these to be 80ns, 1m x 4 chips.
> Will all 20-pin 1m x 4 ZIPs work?
> If not, what special requirements are there?
>


     Here is some info posted by Dick Pirong which should help ...

>>
 
     The Applied Engineering GS-RAM III uses 20-pin "Zip" package 1M x 4
DRAMs (NEC D424400V-80 or OKI H5144024-70). Mike Morton led me to a
supplier in the Computer Shopper magazine.  (Thanks Mike.) The supplier
is L.A.Trade (800-433-3726; http://www.4LATrade.com/memmisc.htm ).

<<

     According to the NEC data sheet, the PD424400 is a 1M x 4 DRAM
available in speeds from 60ns-100ns. It features Fast Page mode
capability and /CAS before /RAS self-refresh capability. Evidently, NEC
no longer sells the chip in a 20-pin Zip package. (If you order chips,
be sure the seller understands that you want them in the Zip package.)



Rubywand