Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!mcgill-vision!bloom-beacon!snorkelwacker!usc!cs.utexas.edu!rutgers!cbmvax!valentin From: valentin@cbmvax.commodore.com (Valentin Pepelea) Newsgroups: comp.sys.amiga Subject: Re: Printer Cables Message-ID: <9448@cbmvax.commodore.com> Date: 24 Jan 90 07:11:23 GMT References: <21826@unix.cis.pitt.edu> Reply-To: valentin@cbmvax.commodore.com (Valentin Pepelea) Organization: Commodore, West Chester, PA Lines: 47 In article <21826@unix.cis.pitt.edu> ejkst@unix.cis.pitt.edu (Eric J. Kennedy) writes: > >Can someone give me the specs on a printer cable for an A1000 to a >parallel printer? I know that a stock printer cable (for an IBM) won't >work, but I don't know what needs to be changed. So perhaps a better >question is, how do I hack a stock IBM parallel (DB25<-->Centronix) >printer cable to work on the A1000? The pinouts are essentially the same, except that the Amiga ports also provide +5V on some pins, in case you want to hang a self-powered device to your port. So before you connect your Amiga to a printer, CUT the pin providing the +5V source. Here are the pinouts: PIN# Amiga 500/2000 Amiga 1000 Meaning --------------------------------------------------------------------- 1 *DRDY *DRDY Data strobe 2 D0 D0 Data pin 0 ... ... ... ... 9 D9 D9 Data pin 9 10 *ACK *ACK Acknowledge 11 BUSY BUSY Busy 12 POUT POUT Paper out 13 SEL SEL Device selected 14 +5V GND Trouble 15 NC GND Not connected 16 *RESET GND Reset 17 GND GND Ground ... ... ... ... 22 GND GND Ground 23 GND +5V Trouble 24 GND NC 25 GND *RESET So, in order to remain alive, cut out pin 14 on the 500/2000, or pin 23 and 25 on the 1000. If you wish your printer to get reset when you reboot on the A1000, connect pin 25 to pin 16 on the printer side. If you easely get confused, just cut pins 14, 23 and 25 no matter what computer you have. :-) Note that the parallel port is male on the Amiga 1000 and female on the other models. Valentin -- The Goddess of democracy? "The tyrants Name: Valentin Pepelea may distroy a statue, but they cannot Phone: (215) 431-9327 kill a god." UseNet: cbmvax!valentin@uunet.uu.net - Ancient Chinese Proverb Claimer: I not Commodore spokesman be