Kurzweil K2500 Version 2.64b Operating System Information

V2.64b Notes

This version is a beta release which 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 Steinbergs 
Recycle software. This now works correctly.



V2.52 Notes

This zipped archive contains the latest operating system for your Kurzweil K2500 Series 
Instrument. In keeping with our policy of continuously upgrading the performance and 
features of our products, this version includes a number of improvements that will enhance 
your instrument. The main feature of v2.52 is KB3 Mode, an astonishingly realistic tone 
wheel organ model.

Also included in this zipped archive is a .PDF file which contains the documentation for all 
the new features added in v2.52. A .PDF file can be viewed with Adobe Acrobat. You can 
download a free copy of the Adobe Acrobat Reader from the Adobe web site: 
http://www.adobe.com.


IMPORTANT - Installation of this new operating system also requires installation of a new 
Objects file, which includes the new KB3 mode Organ programs. You should be able to 
download the proper file from the same place that you downloaded this file. There are 5 
different files, and the one you download will depend on what you have installed in your 
K2500:

OBJ302.ZIP		for a stock K2500
OBJP312.ZIP	for a K2500 with the Piano ROM block
OBJO322.ZIP	for a K2500 with the Piano and Orchestral ROM blocks
OBJC332.ZIP	for a K2500 with the Piano and Contemporary ROM blocks
OBJF342.ZIP	for a K2500 with all ROM blocks


KB3 Mode Sticker - For K2500 Keyboard owners, KB3 Mode includes an adhesive 
sticker which is placed above the 8 buttons and control sliders. This sticker defines special 
functions for those buttons when playing a KB3 program. The sticker is included when the 
entire KB3 package is purchased. (The package includes the OS disk, all 5 Objects disks, a 
printed manual, and the sticker. The cost is $65). Since you have downloaded the files and 
documentation for no charge, you can purchase the sticker by itself from our Accessories 
company at (800) 400-6658. The cost is $15. In addition, the last page of the .PDF file 
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.




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 K25V231.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. Insert the objects floppy, then use "Install Objects" from the K2500 Boot Loader to 
install the new operating system.

6. 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.)



V2.31 Notes

If you are upgrading from v2.08 or v2.13, below is a list of features previously added in 
v2.31. If you are upgrading from version 1 of the operating system, you will want to get 
the current version of the manual. You can download it from our FTP site (it is also in 
.PDF format) or purchase it through our Accessories company at (800) 400-6658.


Version 2.31 adds  support for the KDS Output Option, which enables you to connect your 
K2500 with a Digital Multi-Track interface (DMTi). (See below for more info on the KDS 
option.*)

 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.

Additional enhancements:

 Enhanced CD-ROM drive support. V2.31 now supports a much greater variety of CD-
ROM drives by supporting "2048 bytes per block". NEC CD-ROM drives are still not 
supported.

 Optimized SCSI driver logic for improved speed under certain circumstances.

 Intonation table changes now affect held notes in real-time.

 Improved Iomega JAZ and Zip drive compatibility - when the drive goes to sleep, you can 
now wake up the drive from the K2500.

 Improved voice stealing when using the stereo samples, including the stereo piano ROM 
block.




* KDS Out Option. The KDS out will give you 8 channels of Digital Audio, through a 
special jack which can be connected to the DMTi (Digital Multi-Track Interface). The 
KDFX option also contains a KDS out. However, a separate KDS Out option is also 
available, allowing access to the DMTi without having to add the KDFX.
