This article is a part of the Yamaha keyboard "Style Reference".

The features in Yamaha keyboard style files have changed over the years. The most important differences are:

Period Arrow Early 10's / Late 00's Mid 00's Early 00's Late 90's Mid 90's
Models Arrow Tyros 3/4
PSR S710/S910/S650/S550/A2000
CVP 5xx		 Tyros 1/2
PSR S700/S900
PSR 3000
CVP 4xx		 PSR 2x00
PSR 1x00		 PSR 9/8000
PSR 7/640		 PSR 7000
PSR 620
Style File Format SFF2 SFF1 SFF1 SFF1 SFF1
CASM section Format 2 1 1 0 0
Mega Voices Yes Yes No No No
OTS and MDB sections Yes Yes Yes No No
.sty file extension required No No No Yes Yes
Max. MIDI resolution 1920 1920 1920 1920 480

Instructions:
Style Format 2 Converter converts SFF2 to SFF1 format. SFF2 -Arrow SFF1      
Style Old Format Converter converts SFF1 to various SFF1 sub formats. SFF1 -Arrow SFF1    
SFF1 -Arrow SFF1  
SFF1 -Arrow SFF1

The "Style Format 2 Converter" program will convert SFF2 styles to SFF1 styles with CASM section format 1.
If a SFF2 format style has to be converted to run at an older keyboard using CASM section format 0, e.g. PSR 9000 follow this procedure:
• Convert the style file in the "Style Format 2 Converter" program
• Then convert the converted style file in the "Style Old Format Converter" program while setting the appropriate parameters