General Specifications of Sound Blaster

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SOUND CAPABILITIES:

- 12 voices of stereo C/MS music (C/MS or Game Blaster Compatible) supported
  by numberous games and runs all the software from the Creative Music System
  software library.

  Such as:     C/MS Intelligen Organ, C/MS Sing Along II, C/MS Composer
               C/MS Pop-Up Music, C/MS Presenter...

- 11 voices of FM music (AdLib compatible)
  Frequency Modulation sound generation for realistic sounds

  Two modes: 9 sounds or 6 melody sounds and 5 rhythm sounds supported by
  numerous games and entertainment software

- 1 Digitized voice channel (DAC)
  provide output of sound sampled from the real world - speech, special
  effects, animal sounds, thunderstorm can be now easily reproduced on
  this DAC channel.

  * programmable variable sampling rate 4KHz to 23KHz

  DAC Transfer modes :
  * Direct mode - direct single byte transfer by CPU
  * DMA mode - No CPU intervention/overhead required

  * compression schemes:
  - 8 bit data, no compression
  - 2 to 1 data compression: 4 bit ADPCM, hardware decompression
  - 3 to 1 data compression: 2.6 bit ADPCM, hardware decompression
  - 4 to 1 data compression: 2 bit ADPCM, hardware decompression

ALL THE ABOVE SOUNDS CAN BE PLAYED SEPARATELY OR SIMULTANEOUSLY TO PRODUCE
AND INCREDIBLE 24-VOICE STEREO SOUND.

- built-in stereo power amplifier
  Max output: 4 watts per channel, 4 ohms stereo outputs, stereo headset
  connector, drives any kind of speakers, portable speakers or headsets
  directly.

- RCA-plug conversion cable included, for connecting to home stereo

- built-in volume control
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VOICE INPUT (DIGITAL SAMPLING) CAPABILITY

- 8 bit A-D conversion of sound signal

- variable sampling rate: 4KHz to 12KHz

  ADC transfer modes:
  * Direct mode
  * DMA mode - no CPU intervention required

- Built in microphone jack and amplifier with auto-gain control for direct
  input (sampling) of sound/speech from the real world through standard
  microphone.

- Voice recording/playback and compression software included
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JOYSTICK PORT

- Standard "Game I/O port" built-in (15 pin D-sub connector) connects any
  standard IBM compatible joystick (analog)
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MIDI INTERFACE (** at time of this writing, it is NOT a standard MIDI port)

- Built-in MIDI interface, for connection to MIDI instruments or keyboards

- requires MIDI Connector box and MIDI cables (optionally available)
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Hardware Data

The Sound Blaster uses the I/O port addresses from 2x0H - 2xFH. Where
"x" is the number of selectable jumper from 1 to 6 (i have mine on 7!).

The possible I/O addresses are 210H, 220H, 230H, 240H, 250H, and 260H.
(Factory default setting is 220H)

The functions of these ports are as follows:

2x0H: C/MS music voice 1-6  DATA PORT         (write only)
2x1H: C/MS music voice 1-6  REGISTER PORT     (write only)
2x2H: C/MS music voice 7-12 DATA PORT         (write only)
2x3H: C/MS music voice 7-12 REGISTER PORT     (write only)

2x8H: FM music              DATA/STATUS PORT  (write/read)
2x9H: FM music              REGISTER PORT     (write only)

2x6H: DSP RESET                               (write only)
2xAH: DSP (voice I/O & MIDI) READ DATA        (read only)
2xCH: DSP WRITE DATA or COMMAND               (write)
2xCH: DSP WRITE BUFFER STATUS (bit 7)         (read)
2xEH: DSP DATA AVAILABLE STATUS (bit 7)       (read only)

The Analog Joystick port uses the standard joystick I/O addresses from
200H to 207H.

FM music can also be accessed through I/O address 388H and 389H.
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Complements of Matt's ULTIMATE BBS.. (803) 895-3536 - Greenville, SC