Port addresses -2, Table 1: typical port address usage -2, Warning – Connect Tech DFlex-4/104 User Manual

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2-2

Chapter 2: Hardware Installation

DFlex-4/104 User's Manual, ver. 0.04

Port Addresses

Port addresses are configured with the DIP switch block SW1
situated near the PC/104 bus connector on the DFlex-4/104
adapter. DIP switches 1, 2, and 3 select a set of port addresses for
the ports while DIP switch 6 enables or disables a specific status
port address for that set of addresses. Please refer to Figure 4 for
a description and location of the switch block, while Table 2
provides the switch settings for the various port address sets.

However many other devices may require port addresses in your
computer's I/O address space. In most cases the factory setting is
sufficient, but when there is a conflict, SW1 may require a
different setting. Table 1 summarizes typical I/O port address
usage.

WARNING

Do not use a pencil to set the DIP switches as the lead graphite
may short-circuit the switch.

Table 1: Typical port address usage

Port Address (Hex) Usage
000 - 0FF

Reserved

170 - 177

Fixed disk controller (primary)

1F0 - 1F7

Fixed disk controller (secondary)

200 - 207

Game port

278 -27F

Parallel port (LPT2)

2C0 - 2CF

EGA video adapter (#2)

2F8 - 2FF

Asynchronous serial port (COM2)

360 - 36F

Parallel port (LPT1)

370 - 377

Floppy disk controller (secondary)

378 - 37F

Parallel port (LPT1)

380 - 38F

SDLC adapter (#2)

3A0 - 3AF

SDLC adapter (#1)

3B0 - 3BF

Video adapters

3F0 - 3F7

Floppy disk controller (primary)

3F8 - 3FF

Asynchronous serial port (COM1)

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