Nicholas Coplin talks about doing a USB interface on his website at http://www.64hdd.com/c64-proj.html#usb64 Cheers, Bryan > > Dear Robert, > > I don't know of any USB related project for the Commodores. But I don't > think it's impossible; one could possibly find enough information in the > USB driver source code of Linux or BSD systems, even if the relevant > standard documents cannot be obtained at a reasonable cost. Let's see if > anyone on the cbm-hackers list warms up for this idea. > > I wouldn't try to interface the USB directly to a 6502-based processor; > instead, I'd use a simple microcontroller that is better equipped for the > task. Along these lines, I'm developing a simple device that acts as an > interface between the cassette port of any 8-bit Commodore and an RS-232 > asynchronous serial line. With my custom protocol (for which the driver > can be loaded using the standard cassette protocol), it transfers data at > 38400 bps. > > Alas, I've heard that USB has a complicated protocol stack that might be > too big to fit in a small microcontroller. I don't know if this is true. > Also, implementing a file system (which would be required in the > application you are suggesting) is no trivial task. I guess the > microcontroller would need several kilobytes of memory for buffering data > and several dozens of kilobytes of program code memory. > > Marko > > ---------- Forwarded message ---------- > Date: Tue, 27 Nov 2001 09:57:15 -0600 > From: Robert Eaglestone <email@example.com> > To: firstname.lastname@example.org > Subject: USB-to-C64 ? > > Greetings Mr. Makela: > > I've been browsing the web, looking for someone who has > thought about creating a protocol translator that could make > a USB mass storage device look like a 1541 (or a group of > 1541's). > > I've also been looking for the protocol standard used by > the C64 to talk with the 1541, without success. > > Perhaps you know of someone who has figured out if such > a project can or can't be done. Or perhaps you know > someone who would know if it could be done. If you > know of such people, could you let me know? I am very > curious about it (if only because my 1541-II is not getting > any younger). > > Sincerely, > > Robert Eaglestone > > > Message was sent through the cbm-hackers mailing list > Message was sent through the cbm-hackers mailing list
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