IBM AR-B3001, Руководство пользователя, Страница: 7 / 41

ACROSSER TECHNOLOGY
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2.1.1 Base Address Settings
There is one DIP switch located on the AR-B3001 card.
It is used to select the base port address of the AR-
B3001. The operation of AR-B3001 is controlled through
the I/O ports. Four consecutive I/O ports are used by AR-
B3001. The base address of these I/O ports is selected
by using base address switch DIP SW. The AR-B3001 is
factory-configured for a base address of 3e0 Hex. If this
base address is already occupied, you will need to
change the base address switch setting. It is essential
that each peripheral device, such as an AR-B3001, be
assigned a unique base address within the range of 200
to 3fc Hex and that the address is on a 4-byte boundary.
Figure 2-2 shows the base address switch.
ON
1 2 3 4 5 6 7 8
DIP SW
A2 A3 A4 A5 A6 A7 A8 A9
Figure 2-2. Base Address Switch