J21: Floppy Drive Connector - TMC MI5VP4 User Manual

Hard Disk Drive LED Connector: Pins 10 and 20
This connector connects to the hard drive activity LED on
control panel. This LED will flash when the HDD is being
accessed.

5.15 J21: Floppy Drive Connector

J21 of the MI5VP4 is a 34-pin header and will support up to 2.88MB
floppy drives. The following table shows its pin-out assignments.
Signal Name
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
MI5VP4 User's Manual
Chapter 5 Installation
Pin # Signal Name
10 HDD LED
20 5V
Pin # Pin # Signal Name
1 2 RM/LC
3 4 No connect
5 6 No connect
7 8 Index
9 10 Motor enable 0
11 12 Drive select 1
13 14 Drive select 0
15 16 Motor enable 1
17 18 Direction
19 20 Step
21 22 Write data
23 24 Write gate
25 26 Track 00
27 28 Write protect
29 30 Read data
31 32 Side 1 select
33 34 Diskette change
31