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PRINTER CONTROL
Address
Bit
Bit data
Description
378H
(Printer Data
Output Port)
1
3
0
1
Data Bit 0
1
1
Data Bit 1
2
1
Data Bit 2
1
I
Data Bit 3
6
7
4
1
Data Bit 6
1
Data Bit 7
1
379H
(Printer Status
Port)
(ata
Bit 4
0
1
2
1
I
Data Bit 5
3
4
0
Error
1
Select
1
0
Auto Feed
1
5
I
1
1
P. End (Out of Paper)
2
3
1
Acknowledge
0
Initialize Printer
0
Select Input
1
7
1
I
Busy
37AH
I
o
0
1
Strobe
1
4
1
I
IRO Enable
F-12
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Troubleshooting
