Newsgroups: comp.sys.amiga.hardware Path: utzoo!censor!comspec!darrell From: darrell@comspec.uucp (Darrell Grainger) Subject: Re: Serial Cards Organization: Comspec Communications Inc., Toronto Ontario Canada Date: Tue, 19 Feb 91 22:54:31 GMT Message-ID: <1991Feb19.225431.17057@comspec.uucp> Summary: ASDG or Commodore serial boards References: I have looked at the ASDG dual serial card and have talked to the people at Commodore Canada about their serial card. Both appear to be comparible to the serial port on the motherboard but lack one important thing. From what I could tell they are all DB9 serial ports. This tends to mean that some of the lines necessary for hardware handshaking are missing. For the USRobotics HST 14400 I would expect you to need the following lines: 2 TxD Transmit Data 3 RxD Received Data 4 RTS Request To Send 5 CTS Clear To Send 6 DSR Data Set Ready 7 GND Signal Ground 8 CD Carrier Detect 12 SI Speed Indicator 20 DTR Data Terminal Ready 22 RI Ring Indicator If all but the SI line was support it would be okay. In addition to the chance of one or more of these lines missing, Commodore Canada and the ASDG literature indicated that 19200 bps was all they would recommend these boards for. The 14400 HST should be set for a terminal to modem speed of 38400. Is anyone at Commodore US reading this? Can you give me a little more confidence in you serial board? Darrell Grainger Disclaimer: The above is my personal opinions and do not necessarily reflect those of my employer.