[WriteLog] WL - Serial Cables & radio interfacing

[Tom Branch]

Greetings,

When I was running short on IRQs, I installed a Byterunner card that can
have as many as 8 Com ports and uses a single IRQ.  I use Com 1 and Com 2
off the main PC for the mouse and radio.  I have a Kam Plus for RTTY on Com
3 and a KPC-3 for packet on Com 4.  The card I purchased had two ports, but
Byterunner also sells 4 and 8 port versions.

73 de Tom, K4NR


> > 4.)  Finally, the design architecture of the PC causes some
> > strange results when you attempt to use more than two COM
> > ports because of the sharing of hardware interrupts.  Without
> > getting too technical, be aware that often devices that use
> > COM 1 and COM 3 may not work simultaneously because they share
> > IRQ 4.  Likewise, COM 2 and COM 4 devices share IRQ 3 and may
> > not work simultaneously.  To check this out, get all your
> > Write Log devices working ONE AT A TIME.  Once you achieve
> > that, then try to use them simultaneously.



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