Solving problems, General essues, Windows – Solvline PCI User Manual
Page 36: General issues
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Solving Problems
Solving Problems
- General Issues
1. The MultiPort does not work properly even after it has been successfully installed
One of major reasons MultiPort boards do not work properly is mostly interrupt
collisions. This is not a frequent problem because PCI boards are automatically
assigned interrupts. However, reasons for interrupt collisions or abnormal operation of
PCI boards can be classified into three.
Since there are no reserved resources in the system, PCI may use an already
assigned interrupt number. It is required to install MultiPorts again by disabling IRQ
numbers (such as IRQ3 and IRQ7) that have been assigned but not used in the CMOS
setup program in order to make those interrupts available.
PCI boards may use IRQ numbers occupied by ISA boards. In such a case, the PCI
bus does not recognize the interrupt number assigned to the ISA board, resulting in
malfunction of the PCI board. To solve such a problem, you should change the
interrupt number of the ISA board or change the slot position of the PCI board.
There may be a specific motherboard that assigns interrupt numbers on each slot in
the CMOS set up program, or sets ISA/PCI PnP by interrupt numbers. At this time, PCI
board is not successfully working if the PCI slot has a wrong IRQ number assigned or
all IRQ numbers are set to ISA. As a solution to this problem, unused IRQ numbers
should be set to PCI PnP.
- Windows
2. When any device driver is installed under Windows operating systems, information of the
boards and external port boxes in the system is not identical to the data displayed by the
setup program.
Windows 98/NT is designed to automatically get the number of boards and even the
interface type of port boxes for multi-32/PCI in order to show the data on the setup
screen. If the screen is not normally displayed, it is not allowed to use MultiPorts. This
is caused by low quality products or connectors that may experience problems
connecting the board and external port box or between external port boxes. First, turn
the system off and check the connection status again to verify if the connection is poor.
If this problem persists even if the connector is fault free, please contact us.