With this Verbatim card (good price!) you only get one external port and on-card headers for the other 3. You'll need to add the cost of 3 backplane adapters, or scrounge some from 286 / 386 / 486 class machines that usually had them. Beware though - there are two seemingly equally common ways of wiring the serial lines on the header, either: 1 2 3 4 5 6 7 8 9 -
or 1 3 5 7 9 2 4 6 8 - If you find yourself with the wrong sort you can lift the IDC cable off the header female and re-lay the wires in the right sequence. Most multi-port serial cards have an "octopus cable" - I guess the meaning is good even if the count isn't right! You can also get 4-port cards with modular RJ45 connectors, which is nice and neat - if you can handle the cabling. They don't implement Ring Indicator (pin 9) but I guess you are only after a 3 or even 2 wire connection. You should be able to see all ports in Linux - there used to be specific drivers for DOS, needed because it had very crude IRQ handling on it's serial ports. hth, Kevin. On Fri, 2008-06-27 at 08:14 +1000, Voytek Eymont wrote: > On Thu, June 26, 2008 12:41 pm, Jobst Schmalenbach wrote: > > > Ahh! data logging the "old fashion way" ... but still good. > > http://www.verbatim.com.au/products/hardware.cfm > > Jobst, > > many thanks, this looks like the go, about $58, 4 ports, much rather use > that than multiple USB/RS232 dongles; -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
