53
Connector CN5
Parallel Printer Port
Connector CN4
Floppy Disk Drive Connector
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Function
Ground
DENSEL
Ground
Reserved
Ground
Drate0
Ground
Index
Ground
MTR0
Ground
DR1
Ground
DR0
Ground
MTR1
Drate1
Pin
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
Function
Dir
Ground
Step
Ground
Write Data
Ground
Write Gate
Ground
Track 0
MSEN
Wr Protect
Ground
Read Data
Ground
Head Select
Ground
Disk Change
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
Function
-Strobe
Data 0
Data 1
Data 2
Data 3
Data 4
Data 5
Data 6
Data 7
-Ack
Busy
Paper Empty
Select
Pin
14
15
16
17
18
19
20
21
22
23
24
25
Function
-Autofd
-Error
-Init
-Slctin
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground