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Date:      Fri, 15 Nov 1996 11:52:30 -0500
From:      dennis@etinc.com (dennis)
To:        John Hay <jhay@mikom.csir.co.za>
Cc:        isp@freebsd.org
Subject:   Re: Decision in Router Purchase
Message-ID:  <199611151652.LAA04351@etinc.com>

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>> >> Is SDL forthcoming with the technical information required
>> >> to write and maintain drivers?
>> >> 
>> >> Jim Shankland
>> >> Flying Fox Computer Systems, Inc.
>> >> 
>> >
>> >Yes, I have written the driver with the information they have given me.
>> >They have been very helpful. They even supplied and shipped 2 N2 boards
>> >and a N2pci board from the USA to me here in South Africa.
>> >
>> >The bulk of the driver has to do with the Hitachi HD64570 chip that the
>> >board is using and that information is in the Hitachi data sheets. The
>> >information about how the chip is interfaced to the rest of the board
>> >is actually very little, because most (all) of the work is done by the
>> >chip. The rest of the board is actually just RAM, bus arbitration logic
>> >and line drivers.
>> 
>> gee, sounds just like their (and our) original "archaic" board designs!
>> Wonder what Jim was talking about.......
>> 
>
>Maybe he was talking about the N2pci? It does not have its own RAM on
>the card but use the system memory and get/put the data directly from/to
>there.


I thought that thats what YOU were talking about? Bus mastering is not
a new design....its a design "choice". 

Dennis




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