Microsoft Windows Nt - Brainboxes RS422 Manual

AT & OPTO DUAL RS422/485

Microsoft Windows NT

Microsoft Windows NT Provides built in support for 255
standard serial ports. The installation procedure is very similar to
that of Windows 3.x. Successful operation of the ports is again
dependant on using separate interrupts for each of the ports which
you are installing.
To obtain trouble free mix and match of the COM ports, assuming
that only 1 Serial Port already exists on your PC,
Version 3.51:
the main program group, and double click the
control panel icon.
Version 4.0:
Control Panel icon or click the start button, select
Settings and then Control Panel
Set COM2, and COM3 interrupts to ones not used by other
devices in your system, say IRQ3, and IRQ10 respectively. Plug in
the card.
From Windows NT's Program Manager, select the main
program group, and Double click the control panel icon.
From control panel Double click the Ports icon.
From Windows NT's Program Manager, select
Open 'My Computer' and double click the
Software Configuration
Chapter 4 Page 51