Hi, Several things in this message. A 3.5" HD floppy drive in my old PC, Teac model FD-235HF, is showing a fault which I hope is easily fixable. Here are the details: - Normally when you insert a floppy disk, the drive motor spins until the spindle engages with the rectangular hole in the metal hub of the disk. - This does not happen with the faulty drive. Well very occasionally it does, so I guess the problem may be intermittent. Since the spindle is not engaged, trying to read a file or get a dir listing fails -- the motor does not turn at all when I try to do this. - If I manually turn the drive flywheel(?) slightly after inserting a disk, the motor does kick in and spins to engage the hub of the floppy disk. It's then possible to access the disk as normal. - The fault is definitely with the drive and not the computer's floppy controller (verified by swapping with a different FD-235HF drive). Any ideas? The NEC uPD77C25 is some kind of DSP chip. I'm trying to find a data sheet or data book for this. No luck on searching the NEC web site. Does anyone know where I can get this? If anyone (preferably in the UK) has some old 30-pin 1MB or 4MB SIMMs that they no longer need, please contact me since I could do with at least 2MB worth. I'm also looking for a 16MHz 387SX chip. Bye, -- Mark