ARC UCLINUX RELEASE NOTES
=======================

Product   : uClinux for ARC cores
MileStone : Upgraded support  release 
Version   : 2.4.29
Date      : Jul 27, 2005


	

Table of Contents
-----------------

1.  Overview
2.  Features Supported
3.  Known Limitations and Defects
4.  Contact Information
5.  Reference 


1. Overview
-----------
	This is the uClinux port for the family of configurable ARC cores 
	namely ARCtangent A4, A5 and ARC600. uClinux is a variant of linux 
	that runs on processors without an MMU commonly known as micro-
	controllers. For more info on the ARC cores at 
	http://www.arc.com/configurablecores/


2. Features Supported 
---------------------
	2.1 Jul 27, 2005
	----------------
	1. Upgrade to uClinux 2.4.29 
	2. Tested networking stack with support for ARC VMAC
	3. Tested ZFLAT(compressed flat file) support . This feature gives us 
	   some more free memory to play with and build in TCP/IP networking 
	   with just 2M of RAM. Compile applications with the -z option to 
	   elf2flt to use this feature.
	4. Better D-cache support and run time auto detection of Data and
	   instruction cache configuration
	5. New CONFIG_SMALL_TASK option to reduce the kernel task + stack size
	   to 4K instead of the default 8K. This would save 4K per process at 
	   the expense of reducing the kernel stack to 4K - task struct size
	6. Build compatible with the ARC GCC-3.4.x release
	7. Misc Bug fixes

	2.2 Dec 20, 2004
	----------------
	1. First public release version uClinux 2.4.20
	2. Support for the ARCtangent A4 and A5 and the ARCangel development
	   platform
	3. Support for ARC peripherals (UART and VMAC)


3. Known Limitations and Defects
--------------------------------
	1. No kernel modules support
	2. For ARCcompact cores (A5, ARC600) the kernel cant be compiled in 
	   16 bit ISA mode due to a GCC bug 


4. Contact Information  
----------------------
	In case of any support queries please contact 
	arc-support@codito.com. If you have a support contract please use the 
	support site at http://support.codito.com. 
	For bug reporting and general queries please use the mailing list at 
	http://arc-linux.org/mailman/listinfo/arc-linux-dev


5. References
-------------
	1. ARCCompact ISA Reference Manual
	2. ARCtangent A4 programmers manual 
	3. ARC peripherals manuals
	4. ARC uClinux User Guide
     


Linux Team,
Codito