[Req] USB Floppy Drive Emulator

[javad_amini]

Hi,
I'm a student of animal biotechnology. My problem is saving data by an old Gel Documentation (Gel-doc) System. The system is featured with a 3.5" FDD, capacity of which is too less for multiple measurements and frequently floppy disk error occurs. The solution for it could be some kind of adapter, which uses FDD interface build in in Gel-doc System and on the other side is supported with USB interface making using USB-Memory Sticks possible (such as http://www.ipcas.com/products/usb-floppy-emulator-fdd-to-udd.html or http://www.plrelectronics.com/floppy_to_usb.php). I wish if you would possibly provide me a schematic in order to build it by myself....
I'm waiting for advices...

Thank you,

[Fuji]

Link for a diy usb floppy emulator

http://torlus.com/floppy/

Fuji

[javad_amini]

Thank you fuji
I think it is a read only floppy emulator? isn't it?


http://hxc2001.free.fr/floppy_drive_emulator/index.html#USBFloppyemulator
main features of the USB HxC Floppy (FPGA one) Emulator:
- Read only Floppy emulator (SD,DD,HD & ED mode)
- USB 1.1 device interface (based on the FTDI FT245.).
- MFM, FM and GCR compatible (can handle custom encoding).
- Bitrate between 63Kbits/s and 1MBits/s.(250 differents bitrates by step of 62.5ns).
- Variable bitrate, flakey bits and long tracks, custom tracks support (emulating of copy protected floppies).
- Can emulate floppies up to 128 tracks.
- "jumper free" Design : Device configuration on the software.
- Flexible Floppy Interface: Shugart, IBM PC and Amiga compatible.

[SBW]

There is a post by "emufudd" in this thread which lists quite a few options for floppy emulators:
http://www.codinghorror.com/blog/2005/02/the-floppy-drive-must-die.html

The spec sheet from torlus for the SDcard version:
http://hxc2001.free.fr/floppy_drive_emulator/SDCard_HxC_Floppy_Emulator.pdf
says this:
Write support: ISO MFM 256/512/1024Bytes sector write supported.