From: semler AT raleigh DOT ibm DOT com
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Signed to Unsigned conversion
Date: 13 Jan 1997 15:10:10 GMT
Organization: IBM Zurich Research Laboratory
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Message-ID: <5bdj8i$mlc@grimsel.zurich.ibm.com>
References: <32d7b6c1 DOT 868084 AT ursa DOT smsu DOT edu>
Reply-To: semler AT raleigh DOT ibm DOT com
NNTP-Posting-Host: semler.dk.ibm.com
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

In <32d7b6c1 DOT 868084 AT ursa DOT smsu DOT edu>, aho450s AT nic DOT smsu DOT edu (Tony O'Bryan) writes:
>I want to learn the MOD format so I can write a MOD player that interfaces with
>Allegro's sound routines.  I have the header decoded and the samples extracted,
>but can't figure out how to convert the signed MOD sample data to unsigned data
>suitable for playing on the Sound Blaster.  Thanks for any help you can give.

Add 0x80 to each samplebyte.

Kind regards, Henning Semler