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 <eaglesto@nortelnetworks.com>
> To: marko.makela@hut.fi
> 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
>
>
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>
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