Path: utzoo!mnetor!uunet!mcvax!enea!ttds!draken!duvan!drs-ano
From: drs-ano@duvan.nada.kth.se (Arne Nordmark)
Newsgroups: comp.sys.amiga
Subject: ASDG RAM DISK Problems
Message-ID: <244@draken.nada.kth.se>
Date: 14 Dec 87 15:18:05 GMT
Sender: usenet@draken.nada.kth.se
Reply-To: drs-ano@duvan.nada.kth.se (Arne Nordmark)
Organization: The Royal Inst. of Techn., Stockholm
Lines: 25

Help!

I've just "upgraded" to an A2000. Sadly, I got one of those old ones with
the CPU slot occupied by an expansion memory board.
The board was only half full (512K) so I just couldn't wait filling it up to
one full MEG.
So I did, and Workbench proudly announced 1.4 MEG free memory. Nice!

Well here's the problem: The ASDG RAM disk just don't like those extra bytes.
When I reboot the disk vanishes.

But strangely this only happens when I've filled the disk with more than 
half a MEG or so.  "Aha! there must be an error in those memory chips that
I added, the ASDG device detects the error and make a new disk" I thought.

I found out that the 1 MEG expansion memory occupies addresses C00000-D00000.
(That block are "reserved" for future use according to my manuals, but those
manuals are for 1.1)
I wrote a program that checked the block. And I didn't find a single error!

The disk worked perfectly (almost) with a one MEG Starboard occupying
addresses 200000-300000. So I just don't know what's wrong with C00000!

I really like the ASDG, but I also like the extra memory.
What shall I do?