EPC-8A Hardware Reference
60
Parallel Port
The DB-25 LPT1 parallel port connector is defined as:
Keyboard
The keyboard connector is a 6-pin DIN defined as:
13
1
25
14
Table C-3. DB-25 Pin-out
Pin
Signal
Pin
Signal
1
Strobe
14
Auto line feed
2
DB0
15
Error
3
DB1
16
Initialize printer
4
DB2
17
Select in
5
DB3
18
Signal ground
6
DB4
19
Signal ground
7
DB5
20
Signal ground
8
DB6
21
Signal ground
9
DB7
22
Signal ground
10
Acknowledge
23
Signal ground
11
Busy
24
Signal ground
12
Paper end
25
Signal ground
13
Select
26
Table C-4. Keyboard Pin-out
Pin
Signal
Pin
Signal
1
Data
4
+5V
2
Not used
5
Clock
3
Ground
6
Not used
1
Reference voltage
2
Speaker tone
6
1
2
4
5
3
Summary of Contents for EPC-8A
Page 38: ...EPC 8A Hardware Reference 28 ...
Page 68: ...EPC 8A Hardware Reference 58 ...
Page 72: ...EPC 8A Hardware Reference 62 ...
Page 74: ...EPC 8A Hardware Reference 64 ...
Page 82: ...EPC 8A Hardware Reference 72 ...
Page 94: ...EPC 8A Hardware Reference 84 ...
Page 108: ...EPC 8A Hardware Reference 98 ...
Page 118: ...EPC 8A Hardware Reference 108 ...