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171

Chapter I - Using UnixWare

BTLD-Disk. After loading the GDT driver, UnixWare asks for the second UnixWare boot disk.

Insert the second disk. The following installation procedure has to be carried out as d e-

scribed in the UnixWare documentation.

Important note: As already mentioned in chapter B Hardware Installation, the assignment

of an IRQ to an INT is made by the PCI System BIOS. The UnixWare versions which are cu r-

rently available do not automatically recognize the IRQ of an expansion card (also see

UnixWare Installation Handbook, Appendix B Hardware Configuration; all drivers are avail-

able with fixed interrupts only). The GDT driver on the UnixWare BTLD Disk supports GDT

controllers using

IRQ 10

(decimal). Therefore you have to make sure that the GDT control-

ler you wish to use for the UnixWare installation is set to IRQ 10 (it may become necessary

to change this assignment by means of the PCI System BIOS setup program, and jumpers

on the motherboard, if necessary).

I.4 GDT as an additional Controller

We distinguish two cases.

a.) No GDT controller has been configured for UnixWare yet

In this case, the GDT driver must be installed from the GDT UnixWare BTLD-Disk by means

of the UnixWare desktop and the options "System Setup", "Application Setup". Altern a-

tively, this procedure can be carried out from the UnixWare shell: "pkgadd -d /dev/dsk/f0t"

(GDT driver disk in drive 0). The driver on the GDT UnixWare BTLD-Disk can be immediately

used for installation if the GDT controller uses IRQ 10 (decimal). If you wish to use a diffe r-

ent IRQ you have to change the list in "/etc/conf/sdevice.d/gdth" (the 6th entry of this list is

the IRQ).

b.) A GDT controller has already been configured for UnixWare.

In this case, you only have to add an additional entry for the new GDT controller. This is

done with

/etc/scsi/pdiadd -v IRQ gdth

for IRQ, write the IRQ number the GDT controller uses. In both cases you have to do a cold

boot in order to have the system use the new GDT controller.

I.5 Coordinates of SCSI devices

a.) Host adapter Number (HA)

The host adapter number assigned to the GDT controller is derived from the DPMEM

starting address of the GDT controller. Therefore, if there is only one GDT controller i n-

stalled in the PCI computer system, the host adapter number is = 0. If there are two GDT

controllers installed, the GDT controller with the lower DPMEM address is assigned host

adapter number 0, and the GDT controller with the higher DPMEM address is assigned host

adapter number 1. (Note: After a cold boot, the GDT BIOS displays a couple of messages,

each beginning with the controller's PCI slot number. This boot message also includes the

DPMEM address of a GDT controller. This helps you determine the host adapter number of

the GDT controller. Also see chapter B, Hardware Installation).

b.) UnixWare Target-ID and LUN

Target-IDs 0 and 1 with LUN 0 to 7 are reserved for

"Direct Access Devices"

(devices be-

having like a hard disk or a removable hard and therefore configurable with GDTSETUP).

There is a correlation between the host drive number GDTSETUP assigns (menu Configure

Host Drives), and the assigned target-ID and LUN:

1 2 ... 166 167 168 169 170 171 172 173 174 175 176 ... 296 297

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