In article <7NswVB4w165w@techsys.mcws.fidonet.org> berk@techsys.mcws.fidonet.org (Berk Walker) writes:
quoted text
>Polling slows Coherent 4.0 in a drastic fashion.  It didn't seem to 
>affect SCO Xenix 2.2.4, tho.  (some serial multiport boards are set up to 
>run w/o interrupts in Xenix)

I had Coherent 3.2.0 on a 286 16 MHz. I never saw much of a speed decrease.
It was always slow.