5.5.5. - Enabling E/ISA I/O Ports On HP 700 Systems
The process for making the E/ISA I/O ports on HP 700 platforms
involves a few steps.
A config file for the HP
eisa_config
utility is required, such as the following, which is appropriate for
the Oregon Micro Systems PC boards:
BOARD
ID = "OMS0001"
NAME = "OMS PCX/PC38 Motor Controllers"
MFR = "Oregon Micro Systems"
CATEGORY = "OTH"
SLOT = ISA8
IOCHECK = INVALID
DISABLE = UNSUPPORTED
FUNCTION = "I/O Registers"
TYPE="OTH"
CHOICE="default"
LINK
PORT = 330h
SIZE = BYTE
SHARE = NO
LINK
PORT = 331h
SIZE = BYTE
SHARE = NO
LINK
PORT = 332h
SIZE = BYTE
SHARE = NO
LINK
PORT = 333h
SIZE = BYTE
SHARE = NO
A similar file needs to be created for each ISA card you intend to
use with spec and placed in the directory
/etc/eisa
with a name
that matches the board ID, as in
!OMS0001.CFG
for
ID = "OMS0001".
The IDs are arbitrary for ISA boards.
Be sure to enter the PORT addresses for all the I/O ports to be used on
the card.
After the configuration files are installed, you must run the HP
eisa_config
utility to
save the configuration.
You must also reboot the computer to make the boards
available.
When spec starts up,
it will use the CSS
hp_ports
utility to create a
special file that will be used to access the ports.
For example, the special file
/dev/ioports/0x330
will be created to access the ports
described in the example above.
spec will create one special file for each eight
consecutive I/O ports.
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