Installing the Device Driver
Two device drivers for the SCO UNIX operating system, sio and pa, come installed in the
system and cannot be removed:
•
sio (serial I/O device)
IRQ3 - reserved for the second communications port
IRQ4 - reserved for the first communications port
•
pa (parallel I/O device)
IRQ7
The sio driver is configured to use interrupt vectors 3 and 4. You can reserve one of these
vectors for the controller only if the corresponding communication port is not installed in your
system.
Unless the pa driver can be removed from the kernel, or its interrupt vector can be changed,
interrupt vector 7 cannot be used by the controller.
Use the following procedure, which is based on the SCO UNIX operating system (3.2.4) to
install the device driver:
1.
Boot the system, log in as the system administrator to root, and invoke the custom utility.
For more information about custom, see your system documentation.
2.
Select the Install option and press Enter.
3.
Select the A New Product option and press Enter.
4.
Select the Packages option and press Enter.
5.
Insert the device driver diskette into the floppy drive and press Enter.
6.
Select the device driver to install and press Enter.
7.
Select Continue. (The disk is already in the drive.)
8.
Select the number of ports on the controller (4, 8, or 16) and press Enter.
