/*

		    Turbo C Direct Access Interface

			    by	Joel Lucsy

		  Vroom-Diggy-Diggy Software, (c) 1991


Defined Macros:

     SBOK		Return value indicating success from reset_dsp.


Functions Defined For Direct Access:

     int reset_dsp(void)
        -Resets the DSP. Do this before calling any direct access routines.
        -Returns SBOK if able to reset.


     int read_data(void)
	-Returns data from D-A converter.


     void write_data(void)
	-Writes data to the A-D converter.
	-Speaker_on must be called first in order to hear the sound.


     void speaker_on(void)
	-Turns on the speaker.


     void speaker_off(void)
	-Turns off the speaker.


     void asmdelay(int delay)
	-A delay for timing output, more usefull than Turbo C's delay.


       ** Sound Blaster is a copyright of Creative Labs, Inc. **
*/