Hi all, The current thread that discovered 6532s where 6523s had been expected reminded me of a project I was going to undertake... until I heard that someone was theoretically already doing it, anyway. I have a 2040 PET disk drive (actually for practical purposes a 4040, as some prior owner upgraded the ROMs to DOS 2.0) with a defunct 6530 RRIOT. In theory, a 6532 RIOT and a small PROM can be combined on a little adapter board to replace a RRIOT, and in fact some later Commodore products apparently contained such an adapter board right from the factory. As I mentioned above, I understand someone has a project going to design such an adapter and make them available. In thinking about what such a thing would entail, it occurred to me that it should be possible to do the entire work of a RRIOT with a relatively cheap modern FPGA, including the ROM function. That's significant because just a 6532 by itself is usually $10 or more before shipping. Such a device as I propose would fit on a really tiny board that would be no larger than the original 6530 being replaced. Does anyone have enough knowledge of such devices to say whether I've had a good idea here or an, um, very much not so good one? Regards, Gordon -- The world’s only gsteemso Seattle Retro-Computing Society agitator-in-chief http://www.seattleretrocomputing.com/ Message was sent through the cbm-hackers mailing listReceived on 2012-06-19 05:00:04
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