RE: ROM Dump of Amiga Keyboard controller

From: Martin Hoffmann-Vetter <>
Date: Sun, 24 Aug 2014 19:43:57 +0200
Message-ID: <008f01cfbfc2$fb444630$>

> 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.

Yeees that's strange. But it's possible the 6571 has a defunct io pin. What happens when you use the 6571? An error identicator is the caps lock led.

> Did someone look at the dump to see if it looks like
> code for a keyboard controller?

Yes, it seems the code for a keyboard controller.

> It does a checksum test at power up.

Yes, but is don't checked it. If the rom check failed, the caps lock led is flashing. But there exists different flash times the error causes!


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Received on 2014-08-24 18:01:15

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