Article View: net.micro.atari16
Article #1471Re: 68000 Memory Managment
From: Jeff Lee
Date: Tue, 02 Sep 1986 14:35
Date: Tue, 02 Sep 1986 14:35
52 lines
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3049 bytes
In article <1045@hoptoad.uucp> gnu@hoptoad.uucp (John Gilmore) writes:
>>
>> ...does anyone know of a REAL (ie - available off the
>> shelf, now) system that actually uses the nibble mode of some of the
>> newer rams...
>
>I do not remember if the new cached Sun uses nibble mode (or other
>fast column mode) RAMs.
>
>Part of the problem is that designers don't want to require nibble mode
>RAMs, since they usually cost more than "any old RAMs". Designing to
>the least common denominator in RAMs [modulo what speed you need]
>is very useful for reducing prices.
Speaking of the new SUN, I just saw it come through "The Monthly Report" in
the August UNIX Review. For folks who may not have seen it, here are (what
I consider to be) the highlights.
"Designed to address those traditional scientific/engineering
tasks that tend to be computebound (such as electrical and
mechanical CAD, geophysical analysis and AI), the SUN-3/200
series features the 25 MHz 68020, a 20 MHz 68881 floating point
co-processor, and a proprietary MMU."
... talk of 4 MIPS integer performance ...
"Also available is SUN's optional Floating Point Accelerator (FPA)
which is said to perform 32 and 64-bit floating point calculations
at rates as high as 865 KFLOPS, according to the workstation
vendor."
"To maximize throughput, the machine has a 64 KB virtual-address,
write-back memory cache and 64-bit processor-memory bus. The 3/200
also comes with up to 32 MB of memory, and -- with teh use of four
of SUN's new 575 MB disks -- up to 2.3 GB of mass storage capapcity."
"SUN is showing the new machines at trade shows this month (AAAI
and SIGGRAPH), and is promising shipment within 90 days. The price
on the SUN-3/260HM (high-resolution monochrome) base system,
including 12-slot card cage and 8 MB memory, is pegged at $33,900;
with a 280 MB disk drive and 1/4-inch tape, the cost goes up to
$51,500. The base configuration for the 3/260C (color) station is
$44,900; with disk and tape, $62,500."
Since this may not thrill atari and amiga folks, I restricted followups
to this message to net.micro.68k.
Enjoy...
--
Jeff Lee
CSNet: Jeff @ GATech ARPA: Jeff%GATech.CSNet @ CSNet-Relay.ARPA
uucp: ...!{akgua,allegra,hplabs,ihnp4,linus,seismo,ulysses}!gatech!jeff
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!gatech!jeff From: jeff@gatech.CSNET (Jeff Lee) Newsgroups: net.micro.atari16,net.micro.amiga,net.micro.68k Subject: Re: 68000 Memory Managment Message-ID: <4455@gatech.CSNET> Date: Tue, 2-Sep-86 10:35:39 EDT Article-I.D.: gatech.4455 Posted: Tue Sep 2 10:35:39 1986 Date-Received: Tue, 2-Sep-86 21:30:58 EDT References: <508@elmgate.UUCP> <64@mit-prep.ARPA> <510@elmgate.UUCP> <4422@gatech.CSNET> <1045@hoptoad.uucp> Reply-To: jeff@gatech.UUCP (Jeff Lee) Followup-To: net.micro.68k Organization: School of Information and Computer Science, Georgia Tech, Atlanta Lines: 52 Keywords: 68000 atari amiga 68k mmu