3.3 The I/O Address Map
The I/O address of OME-PIO/PISO series card is automatically
assigned by the main board ROM BIOS. The I/O address can also be re-
assigned by user.
Users are strongly recommended to change the auto-
assigned I/O address.
The plug & play BIOS will assign proper I/O
address to each OME-PIO/PISO series card very well.
The I/O addresses
of OME-PIO-D56/OME-PIO-D24 are given as follows:
Address Read
Write
Wbase+0
RESET\ control register
Same
Wbase+2
Aux control register
Same
Wbase+3
Aux data register
Same
Wbase+5
INT mask control register
Same
Wbase+7
Aux pin status register
Same
Wbase+0x2a INT polarity control register
Same
Wbase+0xc0 read Port0
write Port0
Wbase+0xc4 read Port1
write Port1
Wbase+0xc8 read Port2
write Port2
Wbase+0xcc read configuration
Port0~Port2 configuration
Wbase+0xd0 read CON2 Low byte
(only for OME-PIO-D56)
write CON1 Low byte
(only for OME-PIO-D56)
Wbase+0xd4 read CON2 high byte
(only for OME-PIO-D56)
write CON1 high byte
(only for OME-PIO-D56)
Note. Refer to Sec. 3.1 for more information about wBase.
OME-PIO-D56/OME-PIO-D24 User Manual (Ver.2.1, Oct/2003)
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