The I/O Address Map - ICP DAS USA PIO-D64 User Manual

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3.3

The I/O Address Map

The I/O address of PIO/PISO series card is automatically assigned by the
main board ROM BIOS. The I/O address can also be re-assigned by user. It is
strongly recommended not to change the I/O address by user. The Plug &
Play BIOS will assign proper I/O address to each PIO/PISO series card
very well. The I/O addresses of PIO-D64/PIO-D64U are given as follows, which
are based on the base address of each card.
Address Read
wBase+0 RESET\ control register
wBase+2 Aux control register
wBase+3 Aux data register
wBase+5 INT mask control register
wBase+7 Aux pin status register
wBase+0x2a INT polarity control register
wBase+0xc0 DI0DI7
wBase+0xc4 DI8DI15
wBase+0xc8 DI16DI23
wBase+0xcc DI24DI31
wBase+0xd0 Read U4 8254-counter0
wBase+0xd4 Read U4 8254-counter1
wBase+0xd8 Read U4 8254-counter2
wBase+0xdc Read U4 8254 control word
wBase+0xe0 Read U5 8254-counter3
wBase+0xe4 Read U5 8254-counter4
wBase+0xe8 Read U5 8254-counter5
wBase+0xec Read U5 8254 control word
wBase+0xf4 Read Card ID
Note. Refer to Sec. 3.1 for more information about wBase.
PIO-D64/PIO-D64U User's Manual ( Ver.1.6, Mar. 2015, PMH-007-16 ) ----- 30
Table 3-3
Write
Same
Same
Same
Same
Same
Same
DO0DO7
DO8DO15
DO16DO23
DO24DO31
Write U4 8254-counter0
Write U4 8254-counter1
Write U4 8254-counter2
Write U4 8254 control word
Write U5 8254-counter3
Write U5 8254-counter4
Write U5 8254-counter5
Write U5 8254 control word