Xref:	news2.mv.net comp.os.msdos.djgpp:5161
From:	gt4558a AT acmex DOT gatech DOT edu (Rubicant)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Problems using Allegro library with Windows 95 based systems
Date:	17 Jun 1996 06:13:26 GMT
Organization:	Georgia Institute of Technology
Lines:	33
Message-ID:	<4q2t26$hs5@catapult.gatech.edu>
References:	<Pine DOT SGI DOT 3 DOT 91 DOT 960606133827 DOT 21969A-100000 AT tower DOT york DOT ac DOT uk>
NNTP-Posting-Host:	acmex-prism.gatech.edu
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Shawn Hargreaves (slh100 AT york DOT ac DOT uk) wrote:

: DSP normally stands for Digital Signal Processor. I don't know why 
: Creative Labs used this term for their SB chip (it normally refers to 
: effects processor chorus/reverb/etc units) but in any case, it is the part
: of the card that plays the samples.

: The "Can't use SB MIDI interface and DSP at the same time" error means 
: precisely that: you can't use them both at once :-) This is a limitation 
: of the SB hardware (nothing to do with Win95), but don't worry, you probably 
: don't want to use them both at once in any case...

: The SB MIDI interface is for talking to external synth modules, like the 
: Roland Sound Canvas. It is a badly designed piece of crap, and it won't 
: work at the same time as you are playing samples. Fortunately by the time 
: they made the SB16, Creative Labs had got their act together and added an 
: MPU-401 MIDI interface emulator, which _can_ be used together with the 
: DSP chip. If you have a wavetable daughterboard, you should probably be 
: using the MPU driver. If you have a straight SB16, you don't need either 
: of the MIDI interface drivers - use the OPL3 FM synth driver, or let 
: Allegro autodetect and it should pick it for you...

I wouldn't go so far as to say that they got their act together with their
MPU-401 port.  My brother has a SB16 with a WaveBlaster daughter board,
and, because of some conflict in the board, it has severe problems playing
MIDI and digital sound at the same time.  It WILL play them, but they
conflict somehow and the MIDI port ignores lots of note-off events,
leaving hideous-hanging notes that drown out the song.  I don't know if CL
ever fixed that, but it's very bad sounding.


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