madd@bucsb.bu.edu.UUCP (Jim Frost) (09/19/86)
[May the line eater have a SECTOR NOT FOUND] Could someone mail me the pinouts for: IBM PC or PC/AT COM1: (DB9 type) serial port Parallel port (not Centronics, but the DB25 style) I had though I had the correct pinout chart for the serial card, but apparently not, since we could not make a printer operate. It ran a Hayes modem (2400) with no problems using a cable supplied by the dealer. Thanx in advance. -- +--------------------------------------+--------------------------------+ ! Jim Frost ! "But our theory says that it's ! ! UUCP: ..!harvard!bu-cs!bucsb!madd ! impossible to travel faster ! ! ARPANET: madd@bucsb.bu.edu ! than light...." ! ! CSNET: madd%bucsb@bu-cs ! "Maybe we use different ! ! BITNET: cscc71c@bostonu ! theories." -- Ringworld, Niven ! +--------------------------------------+--------------------------------+
waldref@psueea.UUCP (Greg Waldref) (09/23/86)
Here are the pin-outs for the serial (db-9) connector and how they should be connected for use with a modem. I can't find the pin-out for parallel (its' here some place!). If you don't get it send me mail and I'll find the info. db-9 name db-25 1 cd 8 2 td 3 3 rd 2 4 dtr 20 5 sg 7 6 dsr 6 7 rts 4 8 cts 5 9 ri 22 Yes, 2 and 3 do get reverced for a non-nul modem cable. I hope I got all the numbers right (they do match what I have). greg ...tektronx!psu-cs!psueea!waldref
wtm@neoucom.UUCP (Bill Mayhew) (09/23/86)
### Hi line eater ### Here's what I've been using for the AT-compatible 9 pin connector. By the way, the arrangment seems to be the same as the 9 pin connectors on newer DEC terminals. This message is uploading through an RS232 line from an AT. Pin Name Function Direction --- ---- -------- --------- 1 CD Carrier Detect From modem to computer 2 RxD Received Data From modem to computer 3 TxD Transmit Data From computer to modem 4 DTR Data Term Ready From computer to modem 5 Gnd Ground mutual signal return line 6 DSR Data Set Ready From modem to computer 7 RTS Ready To Send From computer to modem 8 CTS Clear To Send From modem to computer 9 RI Ring Indicator From modem to computer Depending on the applications program that you are using, you will need to connect various numbers of these pins to the device to which you want to talk. I'm using "Mirror" which lets me get away with only using 2, 3, and 5. --Bill Bill Mayhew Division of Basic Medical Sciences Northeastern Ohio Universities' College of Medicine Rootstown, OH 44272 USA (216) 325-2511 (wtm@neoucom.UUCP)