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: <rshaw.0697@theborg.mlb.fl.us>


 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.

