Re: ROM Dump of Amiga Keyboard controller

From: Greg King <>
Date: Sun, 24 Aug 2014 17:09:52 -0400
Message-id: <>
On 2014-08-24 2:09 PM, wrote:
> On 2014-08-24 at 19:03:41, Gerrit Heitsch ( wrote:
>> Also, this still doesn't explain why the 6570-036 works in my Amiga
>> keyboard while the 6571-036 doesn't, and the ROM dump results in
>> identical files. Did someone look at the dump to see if it looks like
>> code for a keyboard controller? It does a checksum test at power up.
> I know it's a long shot, but maybe your 6571-036 is kind of broken in a way, which still allows enough functionality to do what Jim did to it?

Remember what Jim said happenned when he tried to use the dumper-in-RAM 

 > 6570 would generate a bunch of 0xff, but the 6571 gave me nothing.

Maybe, the 6571's RAM has failed.

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Received on 2014-08-24 23:00:03

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