Sound Controller - Intergraph Rack-Mount Workstation/Server System Reference Manual

Sound Controller

The sound controller is the Vibra 16C chip from Creative Labs. Integrated onto the system board, the
controller is a complete, full-featured MPC 2.0 compliant sound implementation, providing full
Sound Blaster Pro functionality and compatibility. The sound controller has the following features
and specifications:
Feature
Sound Controller
Audio Resolution
Sound Blaster Compatibility
MIDI/UART Mode/
Compatibility
Bus Interface
CODEC
CODEC FIFO
FM Synthesizer
External Audio Inputs
Internal Audio Inputs
Audio Outputs
MIDI/Joystick
ADPCM Audio Compression
Sampling Rate Range
Selectable Microphone AGC
Microphone Support
The Vibra 16C sound controller is configured entirely through I/O port accesses. When the system is
powered up, the hardware forces the Vibra 16C to respond to default I/O port addresses, interrupt
request (IRQ) level, and direct memory access (DMA) request and acknowledge. The following table
shows the default sound controller configurations and available programmable settings.
Parameter
Base I/O Address / MPU-401
8-bit DMA Req / Ack Level
16-bit DMA Req / Ack Level
Interrupt Request Level
The settings above may be changed in AMIBIOS Setup (see "Chipset Setup" in the Setup and
Maintenance Guide, delivered with the system) so the Vibra 16C internal registers respond to custom
settings.
Specification
Creative Labs Vibra 16C
16-bit
Sound Blaster Pro, with Sound Blaster 16 register
compatibility
Roland MPU401
16-bit ISA
16-bit Sigma Delta Stereo
4 Samples
Yamaha OPL3
Microphone (Monaural), Stereo Line-In
Stereo FM Synthesis, Stereo Wave Data, Stereo
CD, Monaural PC Speaker
Stereo Line-Out
MIDI In, MIDI Out, up to 4 fire buttons
4:1, 3:1, and 2:1
5 KHz - 44.1 KHz in 228 selectable steps
Yes
Low-Impedance (600 Ohms) Dynamic, Electek
Default Other Available
220/330 240/300
1 3
5 7
10 5, 7
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