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 AT&T PC6300 SUPPORT BBS - Bulletin Service                         
                                                                    
 SUBJECT:  PC6300 to Diablo 620 Printer Pinouts                     
 PROVIDED BY:  AT&T PC-Hotline                                      
                                                                    
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          Diablo 620                               PC6300           
          ==========                             ==========         
          Prot. GND  1-------------------------1 Prot. GND          
                TXD  2-------------------------3 RXD                
                RXD  3-------------------------2 TXD                
                RTS  4----+                                         
                          |                                         
                DSR  6----+                                         
          Sign. GND  7-------------------------7 Sign. GND          
                DTR 20--------------------+----6 DSR                
                                          |                         
                                          +----8 DCD                
                                                                    
          NOTE: Pin #6 on the Diablo side must always be high.      
                                                                    
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          Diablo 630                               PC6300           
          ==========                             ==========         
          Prot. GND  1-------------------------1 Prot. GND          
                TXD  2-------------------------3 RXD                
                RXD  3-------------------------2 TXD                
                RTS  4----+                                         
                          |                                         
                DSR  6----+                                         
          Sign. GND  7-------------------------7 Sign. GND          
          Print RDY 11--------------------+----6 DSR                
                                          |                         
                                          +----8 DCD                
                                                                    
    NOTE: Pin #6 on the Diablo side must always be high.            
    Also switch #4 on the Diablo front panel should be              
    on (1) for hardware handshaking (DTR), or off (0) for XON/XOFF. 
                                                                    
                                                                    

