outgrowth of : OT: how big would it be?

From: Richard Erlacher <edick_at_idcomm.com>
Date: Wed Oct 20 22:30:06 1999

Yes, those parts were OK, except that they are several orders of magnitude
too slow. Volatility is not the issue, since it will be changed frequently,
but it's VITAL that the parts be quick, i.e. 5-7 ns max, on address access
and separate ins and outs would be best. I don't care if I waste 95% of the
RAM, but it should have separate ins and outs, and I have seen VERY few of
those, particularly in the speed i want.

Any suggestions?

Dick

-----Original Message-----
From: Roger Merchberger <zmerch_at_30below.com>
To: Discussion re-collecting of classic computers
<classiccmp_at_u.washington.edu>
Date: Wednesday, October 20, 1999 8:13 PM
Subject: Re: outgrowth of : OT: how big would it be?


>Rumor has it that Richard Erlacher may have mentioned these words:
>>So, who makes 256-byte RAM devices at TTL speeds these days. There are
all
>>sorts of FIFOs of 256 bytes, but I can't find a simple 256-byte RAM any
>>more. I also need a 32x8-bit sram, fast (preferably address-access time
>><<10ns) and preferably in a small package.
>
>Not sure who still *makes* them, but BGMicro and I think Jameco still sells
>Moto 6810 & I think 68B10 parts - IIRC 128x8 parts. (No, not Meg, No, not
>Kilo, but 128 Bytes... just to clarify ;-)
>
>Also, if you're looking for non-volitile, you could go with one of the
>Dallas Semiconductor 12x887 parts - 14 bytes of control registers for the
>onboard clock chip, and 114 bytes of general-purpose battery-backed RAM.
>
>BGMicro has some pretty weird stuff... including some really nice kits from
>what I recall. www.bgmicro.com; I think they have a catalog online, if not
>you can download it as a .pdf...
>
>Hope that helps,
>Roger "Merch" Merchberger
>--
>Roger "Merch" Merchberger --- sysadmin, Iceberg Computers
>Recycling is good, right??? Ok, so I'll recycle an old .sig.
>
>If at first you don't succeed, nuclear warhead
>disarmament should *not* be your first career choice.
Received on Wed Oct 20 1999 - 22:30:06 BST