Black Box PC472C, PC470C, PC478C, PC473C manual Configuring the Adapter, 1.1 I/O Board Configuration

5250 ADAPTER CARDS: HARDWARE INSTALLATION MANUAL

NOTE

The PC should be turned off and unplugged from the wall outlet before twinax cables are connected or disconnected.

4.2 Configuring the Adapter

4.2.1 5250 ISA ADAPTER CARD (PC473C)

If you are installing this adapter in a Plug-and-Play computer, please read Section

4.2.1.2prior to installing the adapter.

4.2.1.1 I/O Board Configuration

The default selection for the I/O address is 2718H (318H in the 10-address-bit terms used by most other PC adapter manufacturers).

The Interrupt level and Memory address defaults are set by the software for IRQ 5 and Memory address DC00H.

Only the I/O address is hardware-selected. If you have an I/O conflict with the default address, reconfigure your adapter for an alternate I/O address. Two alternate I/O addresses that rarely conflict with other devices are 2508H (108H)— all switches off—or 2688H (288H)—switches 1, 2, 3 off and 4, 5, 6 on. We highly recommend that you do not use any address settings in the range 2408H-24F8H (008H-0F8H).

1 2 3 4 5 6 7 8

ON

OFF

Figure 4-1. Configured for address 2718.

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