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Conference 7.286::fddi

Title:	FDDI - The Next Generation

Moderator:	NETCAD::STEFANI

Created:	Thu Apr 27 1989
Last Modified:	Thu Jun 05 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	2259
Total number of notes:	8590

682.0. "Engine/processor on FDDI cards?" by CGOS01::DMARLOWE (PDP 11: MOV -(PC),-(PC)) Wed Aug 26 1992 02:42

    I assume the boards in the DECconcentrator and the DB500/600 have some
    sort of engine or processor to run things.  Are these a dedicated
    engine (something like a ASIC) or are they based on a specific
    processor?
    
    Responding to an RFP and there is some interest as to how the insides
    are designed.
    
    dmm

T.R Title User Personal
Name Date Lines

682.1 KONING::KONING Paul Koning, A-13683 Mon Aug 31 1992 14:53 11

T.R	Title	User	Personal Name	Date	Lines
682.1		KONING::KONING	Paul Koning, A-13683	`Mon Aug 31 1992 14:53`	11
	Give them a copy of the Digital Technical Journal issue on FDDI; that gives a good overview of some of these. The concentrator is pretty simple; most of the work is in the FDDI chipset. The control is provided by a simple 68000 (the slowest version available! that was all we needed...) The bridge has several processors, including a bitslice machine to do the initial sorting of incoming FDDI frames. paul

Give them a copy of the Digital Technical Journal issue on FDDI; that gives a
good overview of some of these.

The concentrator is pretty simple; most of the work is in the FDDI chipset.
The control is provided by a simple 68000 (the slowest version available!  that
was all we needed...)

The bridge has several processors, including a bitslice machine to do the
initial sorting of incoming FDDI frames.

	paul