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Pin
Function
25
-IOR
26
Ground
27
Reserved
28
BALE
29
Reserved
30
Ground
31
IRQ
32
IOCS16
Connector J10
Parallel Printer Port
Pin
Function
1
-Strobe
2
Data 0
3
Data 1
4
Data 2
5
Data 3
6
Data 4
7
Data 5
8
Data 6
9
Data 7
10
-Ack
11
Busy
12
Paper Empty
13
Select
Connector J11
Floppy Disk Drive Connector
Pin
Function
1
Ground
2
DENSEL
3
Ground
4
Reserved
5
Ground
6
Drate0
7
Ground
8
Index
9
Ground
10
MTR0
Pin
Function
33
SA1
34
Reserved
35
SA0
36
SA2
37
HCS0
38
HCS1
39
LED
40
Ground
Pin
Function
14
-Autofd
15
-Error
16
-Init
17
-Slctin
18
Ground
19
Ground
20
Ground
21
Ground
22
Ground
23
Ground
24
Ground
25
Ground
Pin
Function
11
Ground
12
DR1
13
Ground
14
DR0
15
Ground
16
MTR1
17
Drate1
18
Dir
19
Ground
20
Step
57
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