Specifications

60
Floppy Disk Interface
The floppy disk interface is a coded 34-pin, 2-row male connector. Two (3
1/2
or
5
1/4
) floppy disk drives can be connected via a 34-wire flat cable. The odd pins
connect the shielded wires to GND. Signals with # symbol are low active.
2
1
Floppy
Pin Signal I/O Function
2 HDS# O High Density Select
4 N.C. -
6 N.C. -
8 INDEX# I Index Hole
10 MO1# O Motor 1 On
12 DS2# O Drive 2 Select
14 DS1# O Drive 1 Select
16 MO2# O Motor 2 On
18 DIRC# O Direction
20 STEP# O Step Impulse
22 WD# O Write Data
24 WE# O Write Enable
26 TRK0# I Track 0
28 WP# I Write Protection
30 RDD# I Read Data
32 HS# O Head Select
34 DISKCHG# I Disk Change
Table 18, Floppy Disk Interface Pin Assignment
Figure 25,Floppy Disk Interface
4.4