Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!att!cbnewsh!wcs
From: wcs@cbnewsh.ATT.COM (Bill Stewart 201-949-0705 ho95c.att.com!wcs)
Newsgroups: comp.arch
Subject: Re: E2000
Keywords: 68k compatible, high-performance, Edgcore, Edge
Message-ID: <1217@cbnewsh.ATT.COM>
Date: 7 Jun 89 04:36:52 GMT
References: <125@ssp1.idca.tds.philips.nl>
Reply-To: wcs@cbnewsh.ATT.COM (Bill Stewart 201-949-0705 ho95c.att.com!wcs)
Distribution: comp.arch
Organization: AT&T Bell Labs Government Systems Integration Dept.
Lines: 34

In article <125@ssp1.idca.tds.philips.nl> roelof@idca.tds.PHILIPS.nl (R. Vuurboom) writes:
]My info is that Edgcore (formerly Edge until it ran afoul of Leading Edge) 
	Sigh.  The names aren't really that close that Dell should
	go rip off somebody's good name.

]Now for some data:
]The E2000 CPU runs at around 15-16 VAX mips sustained.
]We get about 4x performance improvement over our 25 Mhz 68030 model.
]The machine can currently support 96Mb physical memory (4 triple Euro
]32 Mbyte boards) but can be configured to 1 Gbyte physical memory when
]the (4M) chips become available.
	My Motorola sales rep has been  claiming 5 MIPS for a 25 MHz
	68030 VME board, and predicts 15 MIPS for the 68040 in the fall
	(presumably at 33 MHz?)  Will Edge be doing a performance
	upgrade similar to that?  Or will the 68040 kill them?

]  [nifty & large cache stuff ]
	
]The subsystem has two busses: a proprietary 64 bit bus with a bandwidth of
]128 Mb/s and a 20 Mb/s VMEbus which supports a 68020 support processor (used 
	Moto's 68030 boards use VSB or one of the other VME-offloader 
	memory busses, with VME for generic I/O.  Doesn't need a 68020 helper.
	The higher-performance boards have cache and memory on  the
	card, but have had to push SCSI and Ethernet off-board
	because they need the real estate.

]The cpu is implemented using five 1.5 micron 50000 CMOS gate arrays on a
]triple euro board, the data caches are on a separate triple euro board
]together with the mmu which supports a subset of the 68030 mmu functionality.
-- 
# Bill Stewart, AT&T Bell Labs 2G218 Holmdel NJ 201-949-0705 ho95c.att.com!wcs
	# also cloned at 201-271-4712 tarpon.att.com!wcs 

#			... counting stars by candle light ....