I/O Register Address - Omega ISA- BUS MULTI-FUNCTIONAL BOARD OME-A822PG Hardware Manual

2.4 I/O Register Address

The OME-A-822PGL/PGH occupies 16 consecutive PC I/O addresses. The
following table lists the registers and their locations.
Address Read
Base+0 8254 Counter 0
Base+1 8254 Counter 1
Base+2 8254 Counter 2
Base+3 Reserved
Base+4 A/D Low Byte
Base+5 A/D High Byte
Base+6 DI Low Byte
Base+7 DI High Byte
Base+8 Reserved
Base+9 Reserved
Base+A Reserved
Base+B Reserved
Base+C Reserved
Base+D Reserved
Base+E Reserved
Base+F Reserved
OME-A-822PGL/PGH Hardware Manual ---- 16
Write
8254 Counter 0
8254 Counter 1
8254 Counter 2
8254 Counter Control
D/A Channel 0 Low Byte
D/A Channel 0 High Byte
D/A Channel 1 Low Byte
D/A Channel 1 High Byte
A/D Clear Interrupt Request
A/D Gain Control
A/D Multiplexer Control
A/D Mode Control
A/D Software Trigger Control
DO Low Byte
DO High Byte
Reserved