On 08/24/2014 11:09 PM, Greg King wrote: > On 2014-08-24 2:09 PM, email@example.com wrote: >> On 2014-08-24 at 19:03:41, Gerrit Heitsch (firstname.lastname@example.org) >> 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 > method: > > > 6570 would generate a bunch of 0xff, but the 6571 gave me nothing. > > Maybe, the 6571's RAM has failed. There is a blink code for failed RAM though. Gerrit Message was sent through the cbm-hackers mailing listReceived on 2014-08-25 07:00:03
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