 
README.TXT   0"[$ 8"  [% Z5E%dCxG   [$ETEXTMSWD        #  @C@pC@p                         Kurzweil K2500 Version 2.96 Operating System Information

Version 2.96 Notes

This zipped archive contains the latest operating system for your Kurzweil K2500 Series Instrument. This software is for non-KDFX 2500's.

Changes since 2.88b:

 Added an enhancement to track reset at song stop. Now the software will only reset those channels in use by the song. Arrangements now look at track channel assignments to determine which channels to reset when an arrangement is stopped. In previous versions, the Kurzweil would send an All Controllers Reset message on all channels when you pressed stop. This would put all the controllers back to their default values (including restoring volume to full), before resending any controller messages existing at 1:1:000 for each track. This caused problems if you were playing any other MIDI channels live when the song stopped - the volume would suddenly be back at full volume, pan would be centered,  and any other controller settings would be returned to 0. Now, only the channels used by the tracks in the sequence are reset; all other channels are left untouched.

Fixed a MIDI song sync problem where the click would accent on the "two" instead of the one.

Improved MIDI file import/export

Improved ISO 9660 support

If you encounter any problems with this version of the operating system, we would like to hear about it. You can send us bug reports via email to kurzweilsupport@youngchang.com.

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The complete procedure for installing the operating system is included in Chapter 2 of the K2500 Performance Guide. For your convenience, here's a summary of the procedure:

1. Copy the file K25V296.KOS onto a DOS formatted floppy.

2. Start the K2500

3. Press and release the Exit key while the "Please wait..." message is displayed. This brings up the K2500 Boot Loader.

4. Insert the operating system floppy, then use "Install System" from the K2500 Boot Loader to install the new operating system.

5. When the installation is finished, choose "Run System" from the Boot Loader.

While you won't normally need to reinstall the operating system, you should still put the disk in a safe place, just in case you may need it again.

Note: you can also install these files from a DOS or Kurzweil formatted SCSI disk. When the display asks which device you want to install from, change the parameter to the appropriate SCSI ID. You can only install files from a SCSI disk which is 1 gig or smaller.

We recommend performing a hard reset after installing and running the new system. Choose the Reset soft button from the Master page. (Save any RAM objects to disk before performing a reset.)

Although, you do not have to update the objects when updating the OS, we do recommend that you update to the latest version of Object files.

You can download the current objects files from the Downloads page of our web site:

http://www.youngchang.com/kurzweil/html/downloads.html

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NOTES FROM PREVIOUS VERSIONS

The information below documents features added in previous versions, which are not found in the K2500 manual. In addition, previous versions added KB3 Mode and Live Mode. These features are documented in separate manual addendums. If you do not have these addendums ,they can be download from our web site at:

http://www.youngchang.com/kurzweil/html/manuals.html



Version 2.88b Notes:

 ISO 9660 format support:

Adds ISO 9660 format support for CD's. This allows you to read CD's in the standard format. Previously we required an "image" of the hard disk format.

ISO9660 support key points:

a) Backup, Copy, and Macro all support this new format.
b) The software supports CD-ROM XA (Mode 2) as well as CD-ROM (Mode 1) 
c) The software supports multi-session CD's, but some older CD-ROM drives may not support multi-session. In this case you will only see the first session. 
d) File naming conventions that work: ISO 9660 level 1, MS DOS, and Joliet. 
e) Do not select "use Macintosh extensions" when making ISO 9660 CD's. This may be changed in a future version, but for now it does not work with our system. 
f) Do not select "append version numbers" when making ISO 9660 CD's. 
g) The maximum "path-length" (total file name, including directory names and slashes) is 64 characters, which means that files in highly nested directories may not be loadable. 
h) Unicode characters do not display correctly.

 Supports looped WAV files, both import and export. Also correctly handles tuning of WAV and AIFF files.

Saving a WAV file will now export the loop info, if any. Importing a looped WAV file will now get the loop data, if any. The software only handles one loop per sample, so the first loop found in a WAV file is used. The tuning now works correctly.

Bugs fixed:

a) Fixes problem where certain SCSI drives would be very slow. 
b) Fixes "Keep" bug in song mode, where keep function  would sometimes freeze. 
c) Fixes local on/off problem over MIDI. Cakewalk and other sequencers send a MIDI local off message, which was being handled incorrectly. 
d) Fixes SMDI problem when on the sampler page, would cause the 2500 to hang. 
e) Reverses the sense of the MIDI portamento time control (CC 5), to meet the MIDI spec. 
f) Fixes a problem with certain Akai CD's where the samples have a playback rate set to zero. 
g) Fixes a SMDI problem when Live Mode is on. 
h) Fixes sysex problem with certain remote editors (including SoundDiver).

A number of other bugs are fixed as well.



V2.64b Notes

This version fixes two known bugs in v2.52. Although we believe this version to be free of any other major bugs, as with any beta release, we strongly recommend that you backup your data in case of any unexpected data loss.

Bugs fixed:

1. Mod wheel messages were being filtered out when coming in on the Local Keyboard Channel (important for rack users). Mod wheel messages are now received correctly.

2. A communications problem was occuring between the Kurzweil and Steinberg's Recycle software. This now works correctly.



Version 2.52 Notes

The main feature of v2.52 is KB3 Mode, an astonishingly realistic tone wheel organ model.

KB3 Mode Sticker for K2500 Keyboard owners: 

KB3 Mode makes use of the eight button above the sliders. Newer units have these KB3 Mode functions silk screened onto the case above the buttons. If your unit was manufactured before the release of KB3 mode, there is an adhesive sticker which can be placed above the 8 buttons and control sliders, defining the special functions for those buttons when playing a KB3 program.  You can purchase the sticker from our Accessories company at (800) 400-6658. The cost is $15. In addition, the last page of the addendum manual (which can be downloaded, as mentioned above) contains a full size black & white reproduction of the sticker which you can cut out and tape to the keyboard, if you do not wish to purchase the sticker.



Version 2.31 Notes

Version 2.31 adds support for the KDS Output Option (as well as the KDFX option), which enables you to connect your K2500 with a Digital Multi-Track interface (DMTi).

 For units with sampling option plus the KDS Out or KDFX options: When you choose an Input of "Digital" on the Sample page, there are several new options.

The "Src" parameter has three new options: "Ext," "Int," and "Rtn". "Ext" means that the source is coming through one of the external inputs, coaxial or optical, as in previous versions of the operating system. "Int" selects whatever is assigned to bus A, before going through the internal effects. "Rtn" lets you  sample through the return pair of the KDS Output; see the DMTi User's Guide for more information.

The new "Out" parameter has two options: "A/D" and "Dir." The "A/D" parameter routes the output through the internal effects, as in previous versions of the K2500 operating system. "Dir" selects whatever is assigned to bus A, before going through the internal effects. Use "Src: Int" with "Out: Dir" for direct internal digital sampling.

The Out parameter and the new values for the Src parameter will only be seen if the sampling option plus the KDS Out or KDFX is installed.

 "Verify" has been added to the Disk page. This option, which is off by default, double-checks the data integrity of all your backup, copy, and save operations. Verification also, however, increases the time required for these operations; you may not need to use it if you have a stable SCSI setup.

 You can now copy multiple files with the Copy operation in Disk mode, instead of only a single file. As with other Disk mode operations, use the Select soft button to select multiple files to copy.

 On the Utilities Page in Disk Mode, there is a new utility labeled Info. This will display information about the currently selected drive.

 When formatting a floppy, when the formatting is done, the display will give you an option to insert another floppy and format it.
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