Building the ZoomFloppy (ECCC 2010)
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Building the ZoomFloppy (ECCC 2010)

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The ZoomFloppy is a new device for accessing Commodore floppy drives from a PC via USB. The firmware, known as xum1541, has been available since fall 2009 for those who want to build their own board, ...

The ZoomFloppy is a new device for accessing Commodore floppy drives from a PC via USB. The firmware, known as xum1541, has been available since fall 2009 for those who want to build their own board, but the ZoomFloppy is the first device that will be a complete product offered for sale.

The ZoomFloppy has a number of features beyond simple disk access, which is implemented in OpenCBM. It can also nibble protected disks using a parallel cable and nibtools. It is software-upgradeable and this presentation discusses some features that are planned for the future.

By running the 1571 drive in double-clocked (2 MHz mode), the hardware UART is just fast enough to enable transfer of raw bits, directly off the media. No one has every created a copier that took advantage of this "hidden" mode in the 25 years since the 1571 was introduced.

This presentation is from ECCC 2010, Chicago area.

http://www.root.org/~nate/c64/xum1541/
http://jbrain.net/

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Building the ZoomFloppy (ECCC 2010) Building the ZoomFloppy (ECCC 2010) Presentation Transcript