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Appendix A
Page
31
Blue Chip Technology Ltd.
01270146.doc
Page 31
Base Address Selection
Each column can be physically represented on the board by a pair of pins. In
practice, the boards cover a range of addresses (usually 16
Decimal
). Therefore
the low order four bits are not included, but two higher order bits are added.
This gives an address range of 0 to 3F0
Hex
. The following diagram shows a
typical set of pins.
Here a link is fitted to denote a binary or logic “0”, or left open to indicate a
binary or logic “1”. The example shows a base address setting of 300
Hex
.
Summary of Contents for AOP-12D
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