I have to admit, the 2414 is a strange number to me also. I looked up the
NEC DRAMs though, and the uPD414C would have been equivalent to a MOSTEK
MK4027. Remember, MOSTEK was the industry leader in DRAMs in the mid-'70's.
This number predates my NEC data, but uPD416C would have been the 16K
version.
Dick
-----Original Message-----
From: Pete Turnbull <pete_at_dunnington.u-net.com>
To: Discussion re-collecting of classic computers
<classiccmp_at_u.washington.edu>
Date: Saturday, May 29, 1999 7:27 PM
Subject: Re: Vintage S-100 cards
>On May 29, 16:28, Don Maslin wrote:
>> Subject: Vintage S-100 cards
>>
>> I just acquired a number of vintage (circa 1977) S-100 cards. They are
>> listed below:
>>
>> 3) Processor Technology 16k(?) RAM cards - one fully populated with
>> NEC uPD414C chips, which I take to be a 2414 clone. The other
>> two seem to have all of the glue chips, but no RAM. They are
>> identified in silkscreen as ASSY NO.203000 and in etch as 16KRA.
>
>uPD414 is the equivalent of a 4027 DRAM (4096 x 1bits). What's a 2414?
> Did you mean 2114, or 2147?
>
>> Anybody care? Anyone interested? Any offers?
>
>Yes, but shipping to the UK would be too expensive :-)
>
>--
>
>Pete Peter Turnbull
> Dept. of Computer Science
> University of York
Received on Sat May 29 1999 - 20:52:45 BST