CompuGen 3250
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CompuGen 3250 I/O address
The base I/O address is determined by the eight position DIP Switch located near the top right of the card,
partially hidden by the add-on board.
Figure 40: Location of I/O address DIP switch
The CompuGen 3250 has an I/O address space of four 16 bit words, which can be re-located anywhere between
0x200 and 0x3F8 on a four-word boundary. In other words, four consecutive I/O addresses are needed. For
example, if the base address is 0300H, then 0300, 0301, 0302, and 0303 will be occupied by the
CompuGen 3250 card.
The default I/O address
The default I/O Address setting is 0300, which corresponds to setting switch positions 7 and 8 AWAY from
their switch numbers.
If you must change the I/O Address setting due to a conflict, the information on the following pages can help
you calculate which switch positions you must set.
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