Floppy drive interfacing

Hi guys, I've just dug my not-even-a-tenth-finished floppy disc raw-reader out of the cupboard, the plan being to finish it off. Problem is, I'm not seeing any signals coming out of the floppy drive - all the outputs are stuck high. What I've got is: - All odd numbered pins on the IDC34 tied to ground - All I/O lines from the floppy raised to +5V via two 4k7 resistor packs - /MOTORA and /DS0 wired together, and grounded via a switch - A Sony MPF520E floppy drive, HP badged, jumpered for automatic density selection and DS0 (drive 0) I can step the head in and out fine, and the motor seems to be spinning (the drive's activity light is on at least). What I can't get is any form of output once for every revolution of the disc, i.e. about once per half-second or so). Am I violating some timing parameter or basic rule here? I honestly can't see any reason why the drive would seek fine, but not return any data or index pulses. Thanks. -- Phil. | (\_/) This is Bunny. Copy and paste Bunny classiccmp at philpem.me.uk | (='.'=) into your signature to help him gain http://www.philpem.me.uk/ | (")_(") world domination.