I don't think motherboard version is relevant unless its Escom A1200.
a quick 'google' finds
thisit seems to be PC floppy. are you trying to use it as HD or just DD?
you want to use both floppies internally? look on aminet, it sure has hacks for that. (maybe some signals are missing on internal connector as A1200 was designed for 1 internal drive, I think)
edit:
aminet link