Appendix A
Sound Blaster I/O Address Maps
This appendix lists the I/O addresses used by Sound Blaster cards.
The base I/O addresses are selectable to avoid conflicts with other add-on cards. The
factory default base I/O address setting for all Sound Blaster cards is 220 Hex. In the
following discussion, x is used to denote the selected base I/O address.
The joystick port on Sound Blaster cards is identical to the standard PC Game
Control Adapter (or game I/O port). Thus, it uses I/O addresses from 200h to 207h.