Impulse 3405 Manual do Utilizador descarregar pdf (Página 6)

Card Setup

Sealevel Systems VERSA COMM+4/EX Page 3

The second mode of address selection provides the compatibility mode. In this

mode the DIP-switch sets the base address and the adapter occupies 32

consecutive I/O locations. The following table illustrates the location of each

port and its relationship to the other ports.

Note: For switches 1 - 5 to become active, switches 6, 7 & 8 must be set in

the ‘On’ or ‘Up’ position.

Switch Settings

Address lines Æ A9 A8 A7 A6 A5

Address Selected 1 2 3 4 5

280-29F Off On Off On On

2A0-2BF Off On Off On Off

380-39F Off Off Off On On

1A0-1BF On Off Off On Off

2E0-2FF Off On Off Off Off

Figure 2 - Address Selection Table

The following illustration shows the correlation between the DIP-switch setting

and the address bits used to determine the base address. In the example below,

address 2E0 is selected as a base. Address 2E0 in binary is XX 10 111X XXXX

where X = a non-selectable address bit.

Port # Connector Location Address Example (Base=2E0)

1 Base+0 2E0-2E7

2 Base+8 2E8-2EF

3 Base+16 2F0-2F7

4 Base+24 2F8-2FF

Figure 3 - Port to Connector Table

1 2 3 4 5 6 7 8

OFF

A9 A5

1 2 3 4 5 6 7 8 9 10 11 ... 25 26

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Impulse 3405 Manual do Utilizador Página 6