Northstar Horizon - test-drb@ccmp.vtda.org

26 Nov 2006

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Subject: Re: Northstar Horizon
   From: "Dave Dunfield" <dave06a at dunfield.com>
   Date: Sun, 26 Nov 2006 09:44:57 -0500
     To: "General Discussion: On-Topic and Off-Topic Posts"	<cctalk at
classiccmp.org>

  FYI the e800h start address works for SD or DD as
the SD rom appears twice
 in the address space at both e800h and e900h. 
Not always - I have several different revs of SD controller cards, and I know that
on at least one of them the E900 rom does NOT mirror at E800 - however I also
have several cards that do mirror (which is nice because you don't have to change
the CPU jumpers to swap SD/DD controllers). 
I have three revs of the SD controller and all hit on both addresses.  
Maybe a forth rev?  

Allison