Sensoray 7429 - Manual (Page 12)

I/O P ORT M APPING
The 7429 occupies two consecutive port addresses in the selected STD I/O space.
These ports may be mapped to any address from 00H to FFH. Jumpers are factory in-
stalled to locate the board at ports B2H and B3H.
Jumpers E20 through E27 are used to select the 7429 I/O address. Installing a shunt at
any of these positions will cause an address match when the corresponding address line
is low (logic 0). Conversely, removing a shunt results in a match when the address line
is high (logic 1).
For example, to decode the board at ports B4H and B5H (port B4H is the board's base
address), install shunts on E25, E24, and E20, and remove shunts from E23, E27, E26,
and E22. Note that the board base port always resides at an even address.
Use the following tables to determine which shunts to use for your desired addresses:
MSN E23 E25 E27 E26
0 I I I I
1 I I I R
2 I I R I
3 I I R R
4 I R I I
5 I R I R
6 I R R I
7 I R R R
8 R I I I
9 R I I R
A R I R I
B R I R R
C R R I I
D R R I R
E R R R I
F R R R R
LSN E24 E22 E20