PL4500:
The PL4500 is a unique box. It seems to be the only one that has the NCR53c825 chipset and be entirely EISA based (no PCI slots). As far as I can tell (I am currently checking into this 7/8/00) the NCR53c8xx driver does not support EISA. I cannot find a way to pass the io_port nor irq to the driver so it can find the board (EISA is not easily detected by drivers, most of the time it is required to pass the io_port and sometimes the irq). The only solution at the current time is to install a Linux supported controller board. A couple of choices of Linux compatable boards are as follows:
Compaq Original Smart Controller (EISA)
Compaq Smart-2/E Controller (EISA)
An EISA board containing the Sim710 chipset (NCR53c710)
A supported ISA SCSI controller (Check Linux drivers to see which ones)
When using this driver, your arrays will be accessed through the standard
SCSI devices, such as /dev/sda, /dev/sdb, etc. This is different from our
other array controllers which use their own device names (like
/dev/ida/c0d0, etc.).