User`s manual

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is displayed, do not press ENTER immediately, but type in link ENTER. The system will then
prompt you for the name of the BTLD driver. Now type in gdth. It may be necessary to type
in the complete boot string. In this case, you have to add the following command:
link=gdth btld=fd(xx)
where xx is the "Minor Device Number" of the corresponding device file. xx = 60 for
fd0135ds18, 3,5" floppy as A,: or xx = 61 for fd1135ds18, 3,5" floppy as B: (see SCO UNIX sys-
tem Administrator's Reference, Hardware Dependence, floppy devices). When requested,
enter the IRQ which has been assigned to the PCI INT of the ICP Controller (see chapter B,
Hardware Installation). In addition, the ICP BIOS must not be disabled and the boot drive
must be connected with the ICP Controller having the lowest PCI slot number.
When the UNIX installation has been completed, the driver is installed, too, and you may
install further devices with mkdev hd (ADM).
If the ICP Controller is an additional controller, the installation of the driver is carried out
with installpkg.
H.3 Instructions on mkdev (ADM) for 3.2v4.x
Whenever the program mkdev hd (ADM) is started, you will be asked for the coordinates of
the device you wish to install. The driver does not automatically display all devices con-
nected, so after the installation you will find a tool named GDTSCAN in the directory '/etc'.
The scanning can take up to several seconds, especially when there is more than one con-
troller in the system. The devices are displayed together with their host adapter number,
target-ID and LUN. These values are to be used in mkdev (ADM). Let's have a brief look at
how the HA-no., target-ID and LUN are determined. Please note that the UNIX driver always
maps the first detected Host Drive with target-ID 0, LUN 0. Exactly this drive would be used
as a boot drive when the ICP Controller is to make the boot drive available.
Host adapter Number (HA)
The host adapter number assigned to the ICP Controller is derived from the PCI slot num-
ber of the ICP Controller. Therefore, if there is only one ICP Controller installed in the PCI
bus computer system, the host adapter number=0. If there are two ICP Controllers in-
stalled, the ICP Controller with the lower PCI Slot number is assigned host adapter number
0 and the ICP Controller with the higher PCI slot number is assigned host adapter 1. (Note:
After a cold boot, the ICP BIOS displays a couple of messages, each beginning with the con-
troller’s PCI slot number, e.g. "[PCI 0/3] 4 MB RAM detected". The number after the ‘/’ is the
slot number of the controller. This helps you to determine which is the order of the ICP
Controllers and which host adapter number is assigned to them by UNIX. See also chapter
B, Hardware Installation).
UNIX 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 ICPCON). There
is a correlation between the Host Drive number ICPCON assigns (menu Configure Host
Drives), and the assigned target-ID and LUN:
Host-Drive Number = 8 * Target-ID + LUN
The Host Drive number is the number the drive is given in the list of available Host Drives
in the ICPCON program. The following exemplary screen shows a list of Host Drives. In this
example, there are two Host Drives installed.