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Showing posts from September, 2017

Emulation of Fujitsu MB8877 Floppy Disk Controler with Arduino

Update This project was never finished. My initial motivation was that I only had one 5"1/4 floppy disk. Since then, I have been given about thirty floppy disks whose halves are new. The other reason is that my prototype was never recognized by the QX1; the sequencer was simply not booting up. Since I had other sequencers to play with (PC with 2 x MOTU MTPAV USB + MidiSport 4X4 = 20 inputs, 20 outputs, 320 channels), I gave up for now and put back the controler and floppy drive. However, I'm still studying the possibility of completely replacing the motherboard with a Raspberry Pi: check this llink . Context I have a Yamaha QX1 MIDI sequencer from 1984. The backup medium is 5"1/4 floppy disks. This project is an attempt to replace the floppy drive (Canon MF-221) and the Floppy Disk Controler (Fujitsu MB8877a) with an Arduino. Documentation Yamaha QX1 Operating Guide.pdf Yamaha QX1 Reference Manual.pdf Yamaha QX1 Overall Circuit Diagram Part 1...