Device

Soundblaster 16 PnP, configured by BIOS as

Base address: 220H
DMA 8-bit: 1
DMA 16-bit: 5

Documentation

Using direct I/O, 8-bit, mono, no DMA, no Interrupt

The DSP channel will be written with I/O. Here is the block image. Store this wave file to block 100.

Works well by accident. Maybe the sample rate is fixed to 22050 Hz in this mode.

8-bit, Mono, DMA, no Interrupt

DMA and mixer (volume control) is added. The maximum length of the sound data is 64KB. Here is the block image. It is located at blocks 68-77. Store this wave file to block 100.

Sample rate can be changed.

16-bit, Stereo, DMA, no Interrupt

This plays a wave record of arbitrary length. 16-bit DMA is used for stereo. Here is the block image. It is located at blocks 78-87. Store this wave file to block 180.

To get access to blocks greater than 161 use the following procedure:

Linux: bput 78 wavplay-sb16-16bit-stereo-dma.blk
Linux: bput 180 car.wav
colorForth: 33 nc ! save
Boot colorForth again.
colorForth: 78 load play

The code is still buggy:

After the first play the sound will be played not correctly.
The tail of the sound record (modulo 10000H) will be discarded.

Updated: Thu Aug 23 07:59:19 MET DST 2001