B&B Electronics Parallel Printer Card PIOC Manuale Utente

2 

Documentation Number PIOC2595 Manual 

 

Table 1 - Printer Functions 

 
 

 

 

The base address of the PIOC is set using a eight-position DIP 

switch, SW1. The eight positions correspond to the I/O address lines 
of A2 through A9 (see Table 2). If you set the a switch OFF the 
corresponding I/O address line will be a ZERO and if you set it ON 
the corresponding I/O address line will be a ONE. The factory 
default address setting is 378h. To set the card to the 378h address 
you must set A2 and 7 OFF and A3, 4, 5, 6, 8, and 9 ON. Table 3 
shows the settings for LPT1 and LPT2. 
 

1 Strobe 
2 

Data Bit 1 

3 

Data Bit 2 

4 

Data Bit 3 

5 

Data Bit 4 

6 

Data Bit 5 

7 

Data Bit 6 

8 

Data Bit 7 

9 

Data Bit 8 

10 Acknowledge 
11 Busy 
12 Paper 

End 

13 Select 
14 Auto 

Feed 

15 Error 
16 Initialize 

Printer 

17 Select 

Input 

18 - 25 

Ground