Re: CBM D9060 Hard Drive ROM Addresses

From: Anders Carlsson <anders.carlsson_at_sfks.se>
Date: Wed, 23 Jan 2013 17:08:18 +0100
Message-ID: <B8E1EA53B6984064989E4D207C5C979C@ryds>
Ed Johnson wrote:

> I cannot find information of the memory maps in it on the internet. Does 
> anyone have that info or know what addresses the ROM's are located at?

The DOS part consists of two 8K ROMs at locations 7C ($C000-$DFFF) and 7D 
($E000-$FFFF).

The controller part has a single 2K ROM at location 4C.

You can find a couple of ROM dumps plus original (?) source code here:
http://zimmers.net/anonftp/pub/cbm/firmware/drives/old/9090/index.html

I hope this helps you somehow.

Best regards

Anders Carlsson


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Received on 2013-01-23 17:00:16

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