Pin	Direction	Signal
8	In		IP*
10	Out		Drive Select 1*
12	Out		Drive Select 2*
14	Out		Drive Select 3*
16	Out		Motor On (Head Load)
18	Out		Direction*
20	Out		Step*
22	Out		Write Data*
24	Out		Write Gate*
26	In		Track 00*
28	In		Write Protect*
30	In		Read Data*
32	Out		Size Select*

Other drives use:

2	Out		Nigh/Normal Density
4	Out		In Use/Open
6	Out		Drive Select 4*
34	In		Ready/Disk Change