addresses for each port, Interrupt Vector, IRQ, is identical to that of the driver.
c.The I/O addresses may conflict with other devices, please change another set of I/O address such as I/O:0x280, Interrupt Vector:0x2C0.
d.The board(s) is not plugged properly. Please make sure the board is seated firmly in the expansion slot.
e.The slot for plugging the board is defective.
In this case, please try other slots until you find a good one.
f.The board might be defective.
DOS
This section is specific for troubleshooting under DOS. For general problems and solutions, please see the previous section, “General Troubleshooting”.
1.After executing
a.Make sure you’re using the right driver.
b.Check if the board is properly plugged into ISA/EISA bus slot.
c.Check if the I/O address and IRQ settings in SETUP program are same as the settings on board.
UNIX
This section is specific for troubleshooting under UNIX. For general problems and solutions, please see the previous section, “General Troubleshooting”.
1.Under UNIX, when respawning quite a few number of tty ports, the following error messages appear: “Time out table overflow”, “File table overflow”, “Region table overflow”.
Software Cause and Solution:
The above error messages imply that the system resources are exhausted. You should tune the kernel parameters to a larger value and rebuild the kernel to be able to accommodate the new configuration. Refer to UNIX system manual about how to tune the parameters and rebuild kernel.