Filter
Top Products
Chapter 5 AT Serial Hardware Installation, Verification, and Configuration
© National Instruments Corporation 5-25 Serial Hardware and Software for Windows
AT Boards (Shared IRQ)
Figure 5-12 shows the PnP Port Configuration dialog box for an
AT-232/4 with shared IRQ. The dialog boxes for other shared IRQ AT
boards are similar.
Figure 5-12. PnP Port Configuration Dialog Box for the AT-232/4
Each shared IRQ AT board requires multiple baseI/O settings (one for each
port) and one IRQ that is shared between the ports.
Input/Output Range: Each Input/Output Range listing
displays the I/O address ranges assigned
to the corresponding port on the board.
Interrupt Request: The IRQ shared between the ports on the
board.
Note
The niports utility informs you if your resources conflict with the resources of any
other interface in the system. It does not check for conflicts with ports on the same board.
Make sure to assign base I/O addresses that do not conflict with those assigned to another
port on the same board.