Technical Information 1-11
Table 1-2 System Board Feature Components
Chip
Function
Keyboard and mouse controller:
•
Industry standard 8042A compatible
•
General-purpose microcontroller
•
8-bit internal data bus
By default, the I/O controller interfaces are
automatically configured during boot up. The
I/O controller can also be manually configured
in the Setup program.
Crystal CS4236B
Audio codec with an FM synthesizer integrated
on the system board with the following features:
•
Stereo analog-to-digital and digital-to-
analog converters
•
Analog mixing, anti-aliasing, and
reconstruction filters
•
Line and microphone level inputs
•
ADPCM, A-law, or
µ
law digital audio
compression/decompression
•
Full digital control of all mixer and volume
control functions
•
High-quality, 16-bit, MPC-II compliant
onboard audio
•
Full duplex operation
•
AdLib, Sound Blaster Pro 2.0, Windows
Sound System, and MPU-401 support
•
Full DOS games compatibility
•
MIDI/Game port support
•
OPL3 compatible FM synthesizer
•
BIOS Setup-based enable/disable
•
Onboard Crystal CS9236 Wavetable Music
Synthesizer
The audio subsystem requires up to two DMA
channels and one IRQ.