PC Port Input/Output
config file
PC_PORT # = base_address number_of_pots read_write_flag
edconf:
INTERFACES screen
IO PORT ADDR <>MODE NUM
YES 0x300 Read 1
YES 0x310 R/W 4
NO
NO
On ISA bus systems on 80x86-compatible systems and on HP 700 platforms
with E/ISA bus support, the ports available for the built-in
port_get() , port_getw() , port_put()
and port_putw() functions are configured on the
interfaces screen. The board's hexadecimal base address is given,
along with the number of contiguous 8-bit ports (maximum of 16) that
can be accessed. The ports can be configured for read-only access or
for read-write access. Be careful not to select port addresses associated
with standard PC hardware such as the video board or the hard disk! Also
be sure to include enough 8-bit ports to handle 16-bit word access,
if that is how you will be using the ports. On the HP platforms,
a config file must also be set up in the /etc/eisa directory using
the HP eisa_config utility.
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