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Appendix B: Configuration
Settings
Default Configuration
The SoundExpression supports both Sound
Blaster as well as Windows Sound System
applications. After drivers are installed and
configured, the card is in Sound Blaster
mode when in DOS. It switches to
Windows Sound System mode when you
start Windows. The default configuration
for the board is as follows:
Mode:
Sound Blaster
Interrupt:
IRQ5
DMA Channel:
DMA1
I/O Port Address:
220h
CD-ROM interface:
None
Mode:
Modem
Interrupt:
IRQ3
DMA Channel:
NA
I/O Port Address:
2F8h (COM2)
CD-ROM interface:
IDE
The IRQ, DMA channel, and I/O port
address for the sound portion of the
SoundExpression are all software-
selectable. The type of CD-ROM and
modem interface, I/O port address, IRQ,
and DMA channel are software-
configurable as well.
IMPORTANT NOTE: The IRQ chosen
for the modem must be different than
the IRQs used for sound functions and
the CD-ROM interface. The Sound
Blaster settings for the SoundExpression
(DOS-based) may be different from the
Windows Sound System settings
(Windows-based).
Sound Blaster
IDE CD (only)
Addresses: 220, 240
Address: 170
IRQ: 5, 7, 10
IRQ: 15
DMA: 0, 1, 3
Windows Sound System
MODEM Addresses
Addresses: 530, E80, F40, 604
COM1, 2, 3, 4
IRQ: 7, 9, 10, 11
IRQ3, 4, 5, 7, 9, 10, 11
DMA: 0, 1, 3
MPU-401 Interface
Addresses: 300, 320, 330
IRQ: 2/9, 5, 7
Configuration Settings
