   YAMAHA "SoftSynthesizer(TM)"  S-YXG50 V3.1 Readme.txt

Thank you for using this software. 
Since this is a "software MIDI tone generator," it differs significantly 
from most conventional applications, so please read this document before 
installing the software.
Your use of this software is conditioned on your acceptance of the terms 
given in "License.txt".  You must read the License Agreement before you 
use the software. (The License Agreement will also be displayed when you 
install the software.)

Except for applicable items within the troubleshooting section, version 
numbers have been omitted. 

  *************************** < Important > ****************************
  To avoid causing problems on your computer, be sure to read "Operating 
  environment" and "Installation/un-installation procedure" before you 
  install the software.

       ============= < Operating environment > =======================                                       
	Computer	IBM-PC or AT compatible 

	CPU		Pentium 166MHz or better
	
	Real memory	16MB or more 
	
	Operating system	Windows 95 / Windows 98
	Sound functionality	PCM sound functionality is required

	* DirectX driver  (DirectX 6.1 recommended) is required to 
	   improve the response time of notes.
       ================================================================


[Contents] 

1. Introduction
2. Specifications
3. Features
4. Installation / un-installation procedure
5. Troubleshooting


1. Introduction --------------------------------------------------------------

This is a software "MIDI tone generator" that uses the sound functionality and 
CPU power of your computer to produce sound.
An XGplayer for playing MIDI data is included.

For details, please refer to the Help file that is created when you install 
the software.


2. Specifications ----------------------------------------------------

    Tone generator section
	Tone generation method	PCM / WAVE TABLE
	Number of parts	16 parts
	Polyphony	512 voices
	Number of sounds	676 sounds + 21 drumkits / SFX kits
			(XGmode: 480 sounds + 11 drum kits / SFX kits)
	Tone generator modes	XG / GM / TG300B

    Dynamic filter section
	Filters	Dynamic filters for each note

    Effect section
	Reverb		11 types
	Chorus		11 types
	Variation	43 types (distortion, delay, etc.)


3. Features -------------------------------------------------------------

- Full support of the XG format:	
- Polyphony:	512 voices 
- CD-quality playback:	44 kHz / 22 kHz / 11kHz 
- Minimum note response time 80 ms (when DirectSound is on)
- Simultaneous playback of MIDI and audio


4. Installation / un-installation procedure -----------------------------

If a SoftSynthesizer (S-YG20 etc.) is already installed, you must first 
un-install it (delete the software).

	< Installing the SoftSynthesizer >
	1. Double-click setup.exe
	2. Follow the on-screen instructions to perform the installation.
	3. Re-start Windows, and the software will be available for use.

	< Un-installing the SoftSynthesizer >
	1. Click on Start - Program (P) - "YAMAHA SoftSynthesizer S-Yxxx" 
	   - [Un-install S-Yxxx].
	2. Follow the on-screen instructions.
	3. Re-start Windows to complete the procedure.

	For version 3 alone, you can also delete the software using "Add/ 
        Remove programs".
           **********************************************
	   Attempting to delete the software in any other 
           way will cause problems!
           **********************************************

5. Troubleshooting ----------------------------------------------------------

If due to an unsuccessful installation etc. you are unable to correctly 
un-install the software, you will need to use the following procedure to 
re-install. If you failed in an attempt to delete S-YXG20 or S-YXG50 files 
that you were previously using, you will also need to delete these files.
 (Refer to the online help after installation.)

  ******************* Checking the screen display *************************
  Depending on your settings in Windows, files which actually exist may not 
  be shown on the screen. Please be sure to check this. (This setting will 
  not affect the operation of your computer.)
     (1) Right-click on [Start] and select [Explorer]
     (2) From the menu at the top, select [View]-[Options].
     (3) Select [Display all files].
     (4) Un-check the [Don't show registered filename extensions] box.
  **************************************************************************


< For the S-YXG50 V.3 / S-YG20 V.3 >

  1. Select <Start - Find - File or folder >
  2. Type system.ini and press [Enter]
  3. When the search result returns system.ini, press [Enter]
     In the [drivers] section, delete the comment midi#=sxgma.drv  wave#=sxgma.drv  
     mixer#=sxgma.drv
     (If there is no such line, proceed to step 8.)
     (# is a numeral that will differ depending on your computer)
  4. From Notepad, save the file and exit
  5. Exit the search
  6. Select < Start - Shutdown Windows - Restart computer >
  7. Select < Start - Find - File or folder >
  8. Type sxg*.* and press [Enter]
  9. From the search results, select the following files, right-click the mouse 
     and choose <Delete>
     (In some cases, not all of these files may remain)
    sxgma.drv
    sxgapi.dll
    sxgapi32.dll
    sxgcpu.dll
    sxgma32.dll 
    sxgmasys.dll
    sxgmacpl.cpl
    sxgmx.dll
    sxgmx32.dll     
    sxgxg.dll
    sxgxgknl.vxd
    sxgwave2.tbl     (S-YXG50 only) 
    sxgtkbar.exe     (S-YXG50 only)
    sxgunins.dlll
 10. (S-YG20 only) Press "New conditions," type "sgpwav00.tbl" and press [Enter]. 
     If it appears, delete it.
 11. Exit the search
  


< If S-YXG50 Ver.1.x - Ver.2.1 is still on your computer >
First execute the procedure ** Checking the screen display ** which was given 
above.

  1. Select <Start - Find - File or folder >
  2. Type system.ini and press [Enter]
  3. When the search results show system.ini, press [Enter]
   - In the [386Enh] section, delete the  device=vswp.vxd@comment
   - In the [drivers] section, delete the  midi#=sxgb.drv  wave#=sxgb.drv  
     mixer#=sxgb.drv  comments
    (# is a numeral which will differ depending on your computer)
    (Depending on the version, some models may not have the  mixer#=sxgb.drv  
     comment)
    (If neither comments are present, proceed to step 8.)
  4. Save the file from Notepad and exit
  5. Exit the search
  6. Select < Start - Exit Windows - Restart computer >
  7. Select < Start - Find - File or folder >
  8. Type  sxg*.*  and press [Enter] 
    (In the following search we assume that all files remain)
  9. From the search results, select the following files, right-click with 
     the mouse, and choose <Delete>
     sxgb.drv
     sxg05mx1.dll
     sxg05mx3.dll
     sxgbcpl.cpl
     sxgbsys.dll
     sxgwave2.tbl
 10. Type mmx*.*  and press [Enter]
 11. From the search results select the following files, right-click with 
     the mouse, and choose <Delete>
     mmxswp00.dll
     mmx32x00.dll
 12. Type vswp.vxd and press [Enter]
 13. From the search results,  select the  vswp.vxd file, right-click with 
     the mouse, and choose <Delete>
 14. Exit the search


< If S-YG20 Ver.1 is still on your computer >
First execute the procedure ** Checking the screen display ** which was given 
above.

  1. Select <Start - Find - Files or folders >
  2. Type  system.ini  and press [Enter] 
  3. When the search results show  system.ini  press [Enter]
    EFrom the [Drivers] section, delete the comments@midi#=sgmpdrv00.dll 
      wave#=sgmpdrv00.dll    
     (# is a numeral that will be different depending on your computer)
     (If these comments do not exist, proceed to step 8)
  4. Save the file in Notepad and exit
  5. Exit the search
  6. Select < Start - Exit Windows - Restart computer >
  7. Select <Start - Find - Folders or files >
  8. Type  sgp*.*  and press [Enter] 
    (In the following search we assume that all files remain)
  9. From the search results, select the following files, right-click the mouse, 
     and choose <Delete>
       sgpctl.exe  
       sgpdrv00.dll  
       sgpmod00.dll  
       sgpswp00.dll  
       sgpwav00.tbl 
 10. Exit the search



================================================================================
* SoftSynthesizer is a trademark of Yamaha Corporation.
* All other company names and product names in this document are the registered 
  trademarks or trademarks of their respective owners.
@
(C) 1996-1999 YAMAHA CORPORATION All Rights Reserved

