Northstar Horizon

[Allison]

>
>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