Omega ISA- BUS MULTI-FUNCTIONAL BOARD OME-A822PG Manuel d'utilisateur télécharger pdf (Page 18)

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 Write

Base+0 8254 Counter 0 8254 Counter 0

Base+1 8254 Counter 1 8254 Counter 1

Base+2 8254 Counter 2 8254 Counter 2

Base+3 Reserved 8254 Counter Control

Base+4 A/D Low Byte D/A Channel 0 Low Byte

Base+5 A/D High Byte D/A Channel 0 High Byte

Base+6 DI Low Byte D/A Channel 1 Low Byte

Base+7 DI High Byte D/A Channel 1 High Byte

Base+8 Reserved A/D Clear Interrupt Request

Base+9 Reserved A/D Gain Control

Base+A Reserved A/D Multiplexer Control

Base+B Reserved A/D Mode Control

Base+C Reserved A/D Software Trigger Control

Base+D Reserved DO Low Byte

Base+E Reserved DO High Byte

Base+F Reserved Reserved

OME-A-822PGL/PGH Hardware Manual ---- 16

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Omega ISA- BUS MULTI-FUNCTIONAL BOARD OME-A822PG Manuel d'utilisateur Page 18