Message-ID:	<37AB59B6.BA0E593A@geocities.com>
From:	Sahab Yazdani <beyonder69 AT geocities DOT com>
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Newsgroups:	comp.os.msdos.djgpp
Subject:	Order of Operations (SB Question)
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Date:	Fri, 06 Aug 1999 17:55:03 -0400
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

Okay I have written some code to play some SFX with the Sound Blaster. 
The problem is that when I try to write anything to the sound blaster
the porgram crashes.  In order here is what I do:

 - Search for SoundBlaster Properties (ie IRQ, DMA, DMA16, BASE IO)
 - Init using previous information (makes some variables containing
writeports and stuff like that
 - Install a Handler (i'm really not sure what this is for but every
sample I looked at had it so far it only contains code that acknowledges
the writes (or something to this level))
 - Initialize a buffer of 2048 bytes in size (this is the mixing block)
 - Start the DAC (turn on Speaker, make sure SB knows some infomration
about the buffer)
 - Open a RAW file and dumb 2048 bytes of information into the buffer
 - DeInit (Stop DAC, free buffer, uninstall handler)

The program compiles fine, and I'm pretty sure I have the right ports
and stuff like that, but then the Program GPFs at the part where I open
a RAW file for reading.  

Note that I only initialize 2048 because I want to mix sounds later on
(a la SMIX library by Ethan Brodsky). 
Note 2:  And please don't anybody tell me to abandon this project and go
use the Allegro Library.  I am aware of the libraries greatness.  But my
purpose is to learn *how* to do this, not how to program with Allegro!

PS. What do these functions do?  (They wheren't in the libC help)

_farsetsel()
_fargetsel()
_farnspokeb()

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