Hello,
If your original A1200 was an Amiga Tech motherboard and you are going to Commodore A1200 motherboard then I would see the problem trying to put Amiga Tech PC Floppy Drive
into Commodore 1200 Motherboard as Amiga Tech had to hack
PC Floppy drive to work and they put this hack on the floppy cable.But in your case your situation is in reverse so I would cheak the floppy cable or sadly to say your disk drive has had it's day.Try it on other A1200 if you know anyone in your area.Merv
:-?