CompuServe Thread

#Hardware handshaking

2 messages in this thread
#59042From: bob hawkinsMar 15, 1987 3:33 PM
Yeah, well, RS-232 is an industry standard, but can I just plug my industrystandard whatever into the back of my Amiga 1000? No. And apparently Commodore didn't implement it the way Smith-Corona thought was standard. I just want to know how Commodore implemented it so I can patch my printer into my computer. The SCM manual says that pis 4 and 20 go high when the printer can accept data, low when it can't. What does the Amiga expect to see? Why is this such a hard question?
#59049From: John DraperMar 15, 1987 4:07 PM
Bob, If you are using a standard modem cable, it will not do. What you need is a NULL MODEM cable designed to communicate between two pieces of equipment that both think they are DTEs (Data Terminal Equipment). Pin 4 on the printer should be connected to pin 5 on the Amiga, and pin 5 on the printer should be connected to pin 4 on the Amiga. Regards, Larry.