Message-ID:	<19980331141916.16404.qmail@dns01.ops.usa.net>
Reply-To:	<jgfw AT usa DOT net>
From:	"Guan Foo Wah" <jgfw AT usa DOT net>
To:	<djgpp AT delorie DOT com>
Subject:	JGMOD : help on portamento
Date:	Mon, 30 Mar 1998 01:35:45 +0800
MIME-Version:	1.0

I am currently tyring to implement the s3m portamento effect for JGMOD. The
previous version I released (22 march) doesn't do portamento correctly. I
implemented what my s3m doc (fs3mdoc.txt) says but it is incorrect. Cubic
player, Mikmod 2.10, scream tracker and Modplug tracker which all do
protamento in the same
way is different from mine. 


According to the doc.


portamento slide by x
I should slide peroid by x*4. Totally incorrect. Other players does not
slide this much

fine slide by x	
I sould fine slide period by x*4. Also incrrect. Other players does not
slide this much


Other players slide between x to x*2. If anyone knows how much to slide,
please let me know. OR perhaps there is a bug in my sliding code.

Thanks.

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